Decode Unreadable Barcodes with Custom Scan Parameters

Issue: Reading a small barcode within a large image can be challenging, especially when the barcode is slightly blurred, has small modules, or is affected by background interference. This makes it difficult for a barcode reader to accurately scan the code. In the sample image, a 2 mm x 2 mm DataMatrix code is shown where the camera cannot be positioned too close to the barcode. Solution: The Dynamsoft Barcode Reader SDK offers flexible APIs, enabling developers to build a custom barcode scanner for various usage scenarios such as reading small barcodes at a distance. For this scenario, we recommend the following adjustments: Reduce the blocksize to minimize background interference during binarization and make the modules clearer. Set DeblurModes to null to let the program decide which deblur algorithms to use to enhance clarity for slightly blurred codes. Enable ScaleUpModes to enlarge very small modules for improved readability. { "BarcodeReaderTaskSettingOptions" : [ { "BarcodeColourModes" : null, "BarcodeComplementModes" : [ { "Mode" : "BCM_SKIP" } ], "BarcodeFormatIds" : [ "BF_DEFAULT" ], "BaseBarcodeReaderTaskSettingName" : "", "DPMCodeReadingModes" : [ { "BarcodeFormat" : "BF_DATAMATRIX", "Mode" : "DPMCRM_SKIP" } ], "DeblurModes" : null, "DeformationResistingModes" : [ { "BinarizationMode" : { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 }, "GrayscaleEnhancementMode" : { "Mode" : "GEM_AUTO", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, "Level" : 5, "Mode" : "DRM_SKIP" } ], "ExpectedBarcodesCount" : 0, "LocalizationModes" : [ { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_CONNECTED_BLOCKS", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_SCAN_DIRECTLY", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_STATISTICS", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_LINES", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 } ], "MaxThreadsInOneTask" : 4, "Name" : "BR_1", "ReturnBarcodeZoneClarity" : 0, "SectionImageParameterArray" : [ { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_REGION_PREDETECTION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_BARCODE_LOCALIZATION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_Decode", "Section" : "ST_BARCODE_DECODING" } ], "StartSection" : "ST_REGION_PREDETECTION", "TerminateSetting" : { "Section" : "ST_NULL", "Stage" : "IRUT_NULL" }, "TextResultOrderModes" : [ { "Mode" : "TROM_CONFIDENCE" }, { "Mode" : "TROM_POSITION" }, { "Mode" : "TROM_FORMAT" } ] } ], "CaptureVisionTemplates" : [ { "ImageROIProcessingNameArray" : [ "roi_default" ], "ImageSource" : "", "MaxParallelTasks" : 4, "MinImageCaptureInterval" : 0, "Name" : "Default_1", "OutputOriginalImage" : 0, "SemanticProcessingNameArray" : null, "Timeout" : 10000 } ], "GlobalParameter" : { "MaxTotalImageDimension" : 0 }, "ImageParameterOptions" : [ { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 5, "BlockSizeY" : 5, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 5 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_1", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 2300, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : 0, "LetterHeightThreshold" : 0, "Mode" : "SUM_LINEAR_INTERPOLATION", "ModuleSizeThreshold" : 4, "TargetLetterHeight" : 0, "TargetModuleSize" : 6 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] }, { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_Decode", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 99999, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : -1, "LetterHeightThreshold" : 0, "Mode" : "SUM_AUTO", "ModuleSizeThreshold" : 0, "TargetLetterHeight" : 0, "TargetModuleSize" : 0 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] } ], "TargetROIDefOptions" : [ { "BaseTargetROIDefName" : "", "Location" : { "Offset" : { "FirstPoint" : [ 0, 0, 1, 1 ], "FourthPoint" : [ 0, 100, 1, 1 ], "MeasuredByPercentage" : 1, "ReferenceObjectOriginIndex" : 0, "ReferenceObjectType" : "ROT_ATOMIC_OBJECT", "ReferenceXAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 0, "LengthReference" : "LR_X", "RotationAngle" : 90 }, "ReferenceYAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 1, "LengthReference" : "LR_Y", "RotationAngle" : 90 }, "SecondPoint" : [ 100, 0, 1, 1 ], "ThirdPoint" : [ 100, 100, 1, 1 ] } }, "Name" : "roi_default", "PauseFlag" : 0, "TaskSettingNameArray" : [ "BR_1" ] } ] } Read this case study to see how Naturalis ARISE, a scientific research consortium, achieved high accuracy and offline capability for reading tiny Data Matrix codes on specimen containers, even through plastic bags, test tubes, and liquids, in remote outdoor locations with the help of Dynamsoft Barcode Reader SDK.

Issue: It’s very common that an image taken may present some shadows. The barcode area with uneven lighting is a very challenging decoding situation that many scanners fail to read. Solution: Dynamsoft Barcode Reader provides an adaptive binarization mode (BM_LOCAL_BLOCK) which caters to different lighting areas in the image in order to successfully decode these challenging barcodes. Image Source: https://boofcv.org/index.php?title=Performance:QrCode { "BarcodeReaderTaskSettingOptions" : [ { "BarcodeColourModes" : null, "BarcodeComplementModes" : [ { "Mode" : "BCM_SKIP" } ], "BarcodeFormatIds" : [ "BF_DEFAULT" ], "BaseBarcodeReaderTaskSettingName" : "", "DPMCodeReadingModes" : [ { "BarcodeFormat" : "BF_DATAMATRIX", "Mode" : "DPMCRM_SKIP" } ], "DeblurModes" : null, "DeformationResistingModes" : [ { "BinarizationMode" : { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 }, "GrayscaleEnhancementMode" : { "Mode" : "GEM_AUTO", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, "Level" : 5, "Mode" : "DRM_SKIP" } ], "ExpectedBarcodesCount" : 0, "LocalizationModes" : [ { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_CONNECTED_BLOCKS", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_SCAN_DIRECTLY", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_STATISTICS", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_LINES", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 } ], "MaxThreadsInOneTask" : 4, "Name" : "BR_1", "ReturnBarcodeZoneClarity" : 0, "SectionImageParameterArray" : [ { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_REGION_PREDETECTION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_BARCODE_LOCALIZATION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_Decode", "Section" : "ST_BARCODE_DECODING" } ], "StartSection" : "ST_REGION_PREDETECTION", "TerminateSetting" : { "Section" : "ST_NULL", "Stage" : "IRUT_NULL" }, "TextResultOrderModes" : [ { "Mode" : "TROM_CONFIDENCE" }, { "Mode" : "TROM_POSITION" }, { "Mode" : "TROM_FORMAT" } ] } ], "CaptureVisionTemplates" : [ { "ImageROIProcessingNameArray" : [ "roi_default" ], "ImageSource" : "", "MaxParallelTasks" : 4, "MinImageCaptureInterval" : 0, "Name" : "Default_1", "OutputOriginalImage" : 0, "SemanticProcessingNameArray" : null, "Timeout" : 10000 } ], "GlobalParameter" : { "MaxTotalImageDimension" : 0 }, "ImageParameterOptions" : [ { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_1", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 2300, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : -1, "LetterHeightThreshold" : 0, "Mode" : "SUM_AUTO", "ModuleSizeThreshold" : 0, "TargetLetterHeight" : 0, "TargetModuleSize" : 0 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] }, { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_Decode", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 99999, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : -1, "LetterHeightThreshold" : 0, "Mode" : "SUM_AUTO", "ModuleSizeThreshold" : 0, "TargetLetterHeight" : 0, "TargetModuleSize" : 0 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] } ], "TargetROIDefOptions" : [ { "BaseTargetROIDefName" : "", "Location" : { "Offset" : { "FirstPoint" : [ 0, 0, 1, 1 ], "FourthPoint" : [ 0, 100, 1, 1 ], "MeasuredByPercentage" : 1, "ReferenceObjectOriginIndex" : 0, "ReferenceObjectType" : "ROT_ATOMIC_OBJECT", "ReferenceXAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 0, "LengthReference" : "LR_X", "RotationAngle" : 90 }, "ReferenceYAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 1, "LengthReference" : "LR_Y", "RotationAngle" : 90 }, "SecondPoint" : [ 100, 0, 1, 1 ], "ThirdPoint" : [ 100, 100, 1, 1 ] } }, "Name" : "roi_default", "PauseFlag" : 0, "TaskSettingNameArray" : [ "BR_1" ] } ] }

Issue: When it comes to scanning hundreds of barcodes in an image, Dynamsoft offers many optimization settings to effectively and quickly batch scan QR Codes. Solution: First, set the barcode type to QR code if your image only contains this type of code to reduce decoding time. Next, set the GrayscaleEnhancementModes to eliminate blurriness and set the ThresholdCompensation in BinarizationModes higher to improve the binary image with a dark background. Then, try different localization methods to accurately pinpoint the barcode locations. At last, set the ExpectedBarcodesCount to a large number such as 999 to make sure that the algorithm works really hard to decode as many barcodes as possible. { "BarcodeReaderTaskSettingOptions" : [ { "BarcodeColourModes" : null, "BarcodeComplementModes" : [ { "Mode" : "BCM_SKIP" } ], "BarcodeFormatIds" : [ "BF_QR_CODE", "BF_MICRO_QR" ], "BaseBarcodeReaderTaskSettingName" : "", "DPMCodeReadingModes" : [ { "BarcodeFormat" : "BF_DATAMATRIX", "Mode" : "DPMCRM_SKIP" } ], "DeblurModes" : null, "DeformationResistingModes" : [ { "BinarizationMode" : { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 }, "GrayscaleEnhancementMode" : { "Mode" : "GEM_AUTO", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, "Level" : 5, "Mode" : "DRM_SKIP" } ], "ExpectedBarcodesCount" : 999, "LocalizationModes" : [ { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_CONNECTED_BLOCKS", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_SCAN_DIRECTLY", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_STATISTICS", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_LINES", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 } ], "MaxThreadsInOneTask" : 4, "Name" : "BR_1", "ReturnBarcodeZoneClarity" : 0, "SectionImageParameterArray" : [ { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_REGION_PREDETECTION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_BARCODE_LOCALIZATION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_Decode", "Section" : "ST_BARCODE_DECODING" } ], "StartSection" : "ST_REGION_PREDETECTION", "TerminateSetting" : { "Section" : "ST_NULL", "Stage" : "IRUT_NULL" }, "TextResultOrderModes" : [ { "Mode" : "TROM_CONFIDENCE" }, { "Mode" : "TROM_POSITION" }, { "Mode" : "TROM_FORMAT" } ] } ], "CaptureVisionTemplates" : [ { "ImageROIProcessingNameArray" : [ "roi_default" ], "ImageSource" : "", "MaxParallelTasks" : 4, "MinImageCaptureInterval" : 0, "Name" : "Default_1", "OutputOriginalImage" : 0, "SemanticProcessingNameArray" : null, "Timeout" : 10000 } ], "GlobalParameter" : { "MaxTotalImageDimension" : 0 }, "ImageParameterOptions" : [ { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 20 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, { "Mode" : "GEM_GRAY_EQUALIZE", "Sensitivity" : 5, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, { "Mode" : "GEM_GRAY_SMOOTH", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : 3, "SmoothBlockSizeY" : 3 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_1", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 2300, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : -1, "LetterHeightThreshold" : 0, "Mode" : "SUM_AUTO", "ModuleSizeThreshold" : 0, "TargetLetterHeight" : 0, "TargetModuleSize" : 0 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] }, { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_Decode", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 99999, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : -1, "LetterHeightThreshold" : 0, "Mode" : "SUM_AUTO", "ModuleSizeThreshold" : 0, "TargetLetterHeight" : 0, "TargetModuleSize" : 0 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] } ], "TargetROIDefOptions" : [ { "BaseTargetROIDefName" : "", "Location" : { "Offset" : { "FirstPoint" : [ 0, 0, 1, 1 ], "FourthPoint" : [ 0, 100, 1, 1 ], "MeasuredByPercentage" : 1, "ReferenceObjectOriginIndex" : 0, "ReferenceObjectType" : "ROT_ATOMIC_OBJECT", "ReferenceXAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 0, "LengthReference" : "LR_X", "RotationAngle" : 90 }, "ReferenceYAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 1, "LengthReference" : "LR_Y", "RotationAngle" : 90 }, "SecondPoint" : [ 100, 0, 1, 1 ], "ThirdPoint" : [ 100, 100, 1, 1 ] } }, "Name" : "roi_default", "PauseFlag" : 0, "TaskSettingNameArray" : [ "BR_1" ] } ] }

Issue: Blurry QR codes and barcodes pose a significant challenge to effective scanning. The images of the codes may be taken in low resolution or motion. Solution: There are some parameters we can adjust to improve the reading rate. Set DeblurModes to null to let the program decide which deblur algorithms to use to read blurred barcodes. Set the ExpectedBarcodesCount to a higher value like 999 so that it will try all the available image processing methods. Set GrayscaleEnhancementModes to enhance the image. Set ScaleUpModes to scale up modules if their size is too small. { "BarcodeReaderTaskSettingOptions" : [ { "BarcodeColourModes" : null, "BarcodeComplementModes" : [ { "Mode" : "BCM_SKIP" } ], "BarcodeFormatIds" : [ "BF_DEFAULT", "BF_PATCHCODE" ], "BaseBarcodeReaderTaskSettingName" : "", "DPMCodeReadingModes" : [ { "BarcodeFormat" : "BF_DATAMATRIX", "Mode" : "DPMCRM_SKIP" } ], "DeblurModes" : null, "DeformationResistingModes" : [ { "BinarizationMode" : { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 }, "GrayscaleEnhancementMode" : { "Mode" : "GEM_AUTO", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, "Level" : 5, "Mode" : "DRM_SKIP" } ], "ExpectedBarcodesCount" : 999, "LocalizationModes" : [ { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_CONNECTED_BLOCKS", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_SCAN_DIRECTLY", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_STATISTICS", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_LINES", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 } ], "MaxThreadsInOneTask" : 4, "Name" : "BR_1", "ReturnBarcodeZoneClarity" : 0, "SectionImageParameterArray" : [ { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_REGION_PREDETECTION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_BARCODE_LOCALIZATION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_Decode", "Section" : "ST_BARCODE_DECODING" } ], "StartSection" : "ST_REGION_PREDETECTION", "TerminateSetting" : { "Section" : "ST_NULL", "Stage" : "IRUT_NULL" }, "TextResultOrderModes" : [ { "Mode" : "TROM_CONFIDENCE" }, { "Mode" : "TROM_POSITION" }, { "Mode" : "TROM_FORMAT" } ] } ], "CaptureVisionTemplates" : [ { "ImageROIProcessingNameArray" : [ "roi_default" ], "ImageSource" : "", "MaxParallelTasks" : 4, "MinImageCaptureInterval" : 0, "Name" : "Default_1", "OutputOriginalImage" : 0, "SemanticProcessingNameArray" : null, "Timeout" : 99999 } ], "GlobalParameter" : { "MaxTotalImageDimension" : 0 }, "ImageParameterOptions" : [ { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, { "Mode" : "GEM_GRAY_EQUALIZE", "Sensitivity" : 5, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, { "Mode" : "GEM_GRAY_SMOOTH", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : 3, "SmoothBlockSizeY" : 3 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_1", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 2300, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : 0, "LetterHeightThreshold" : 0, "Mode" : "SUM_LINEAR_INTERPOLATION", "ModuleSizeThreshold" : 4, "TargetLetterHeight" : 0, "TargetModuleSize" : 6 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] }, { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_Decode", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 99999, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : -1, "LetterHeightThreshold" : 0, "Mode" : "SUM_AUTO", "ModuleSizeThreshold" : 0, "TargetLetterHeight" : 0, "TargetModuleSize" : 0 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] } ], "TargetROIDefOptions" : [ { "BaseTargetROIDefName" : "", "Location" : { "Offset" : { "FirstPoint" : [ 0, 0, 1, 1 ], "FourthPoint" : [ 0, 100, 1, 1 ], "MeasuredByPercentage" : 1, "ReferenceObjectOriginIndex" : 0, "ReferenceObjectType" : "ROT_ATOMIC_OBJECT", "ReferenceXAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 0, "LengthReference" : "LR_X", "RotationAngle" : 90 }, "ReferenceYAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 1, "LengthReference" : "LR_Y", "RotationAngle" : 90 }, "SecondPoint" : [ 100, 0, 1, 1 ], "ThirdPoint" : [ 100, 100, 1, 1 ] } }, "Name" : "roi_default", "PauseFlag" : 0, "TaskSettingNameArray" : [ "BR_1" ] } ] } Image Source: https://boofcv.org/index.php?title=Performance:QrCode

Issue: When a barcode is wrapped on a cylindrical object such as a pop can, the resulting barcode image is curved. The deformed barcode is very challenging to scan correctly. Solution: Dynamsoft Barcode Reader SDK provides several image processing methods to combat deformation. These helps to scan curved, crumpled, distorted and other types of challenging barcodes. { "BarcodeReaderTaskSettingOptions" : [ { "BarcodeColourModes" : null, "BarcodeComplementModes" : [ { "Mode" : "BCM_SKIP" } ], "BarcodeFormatIds" : [ "BF_QR_CODE", "BF_MICRO_QR" ], "BaseBarcodeReaderTaskSettingName" : "", "DPMCodeReadingModes" : [ { "BarcodeFormat" : "BF_DATAMATRIX", "Mode" : "DPMCRM_SKIP" } ], "DeblurModes" : null, "DeformationResistingModes" : [ { "BinarizationMode" : { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 }, "GrayscaleEnhancementMode" : { "Mode" : "GEM_AUTO", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, "Level" : 5, "Mode" : "DRM_GENERAL" }, { "BinarizationMode" : { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 }, "GrayscaleEnhancementMode" : { "Mode" : "GEM_AUTO", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, "Level" : 5, "Mode" : "DRM_BROAD_WARP" }, { "BinarizationMode" : { "BinarizationThreshold" : -1, "BlockSizeX" : 30, "BlockSizeY" : 30, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 }, "GrayscaleEnhancementMode" : { "Mode" : "GEM_AUTO", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, "Level" : 5, "Mode" : "DRM_DEWRINKLE" } ], "ExpectedBarcodesCount" : 0, "LocalizationModes" : [ { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_CONNECTED_BLOCKS", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_SCAN_DIRECTLY", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_STATISTICS", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_LINES", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 } ], "MaxThreadsInOneTask" : 4, "Name" : "BR_1", "ReturnBarcodeZoneClarity" : 0, "SectionImageParameterArray" : [ { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_REGION_PREDETECTION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_BARCODE_LOCALIZATION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_Decode", "Section" : "ST_BARCODE_DECODING" } ], "StartSection" : "ST_REGION_PREDETECTION", "TerminateSetting" : { "Section" : "ST_NULL", "Stage" : "IRUT_NULL" }, "TextResultOrderModes" : [ { "Mode" : "TROM_CONFIDENCE" }, { "Mode" : "TROM_POSITION" }, { "Mode" : "TROM_FORMAT" } ] } ], "CaptureVisionTemplates" : [ { "ImageROIProcessingNameArray" : [ "roi_default" ], "ImageSource" : "", "MaxParallelTasks" : 4, "MinImageCaptureInterval" : 0, "Name" : "Default_1", "OutputOriginalImage" : 0, "SemanticProcessingNameArray" : null, "Timeout" : 99999 } ], "GlobalParameter" : { "MaxTotalImageDimension" : 0 }, "ImageParameterOptions" : [ { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, { "Mode" : "GEM_GRAY_EQUALIZE", "Sensitivity" : 5, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, { "Mode" : "GEM_GRAY_SMOOTH", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : 3, "SmoothBlockSizeY" : 3 }, { "Mode" : "GEM_SHARPEN_SMOOTH", "Sensitivity" : -1, "SharpenBlockSizeX" : 3, "SharpenBlockSizeY" : 3, "SmoothBlockSizeX" : 3, "SmoothBlockSizeY" : 3 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_1", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 2300, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : -1, "LetterHeightThreshold" : 0, "Mode" : "SUM_AUTO", "ModuleSizeThreshold" : 0, "TargetLetterHeight" : 0, "TargetModuleSize" : 0 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] }, { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_Decode", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 99999, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : -1, "LetterHeightThreshold" : 0, "Mode" : "SUM_AUTO", "ModuleSizeThreshold" : 0, "TargetLetterHeight" : 0, "TargetModuleSize" : 0 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] } ], "TargetROIDefOptions" : [ { "BaseTargetROIDefName" : "", "Location" : { "Offset" : { "FirstPoint" : [ 0, 0, 1, 1 ], "FourthPoint" : [ 0, 100, 1, 1 ], "MeasuredByPercentage" : 1, "ReferenceObjectOriginIndex" : 0, "ReferenceObjectType" : "ROT_ATOMIC_OBJECT", "ReferenceXAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 0, "LengthReference" : "LR_X", "RotationAngle" : 90 }, "ReferenceYAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 1, "LengthReference" : "LR_Y", "RotationAngle" : 90 }, "SecondPoint" : [ 100, 0, 1, 1 ], "ThirdPoint" : [ 100, 100, 1, 1 ] } }, "Name" : "roi_default", "PauseFlag" : 0, "TaskSettingNameArray" : [ "BR_1" ] } ] }

Issue: Often you might find that a barcode is damaged, for example, scratched, marked up, or incomplete with missing corners, etc. Solution: We can try different localization methods to identify the location of the barcode that is severely damaged and then use our proprietary algorithm to complete the QR Code to improve the decoding rate. { "BarcodeReaderTaskSettingOptions" : [ { "BarcodeColourModes" : null, "BarcodeComplementModes" : [ { "Mode" : "BCM_SKIP" } ], "BarcodeFormatIds" : [ "BF_QR_CODE", "BF_MICRO_QR" ], "BaseBarcodeReaderTaskSettingName" : "", "DPMCodeReadingModes" : [ { "BarcodeFormat" : "BF_DATAMATRIX", "Mode" : "DPMCRM_SKIP" } ], "DeblurModes" : null, "DeformationResistingModes" : [ { "BinarizationMode" : { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 }, "GrayscaleEnhancementMode" : { "Mode" : "GEM_AUTO", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, "Level" : 5, "Mode" : "DRM_SKIP" } ], "ExpectedBarcodesCount" : 0, "LocalizationModes" : [ { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_CONNECTED_BLOCKS", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_SCAN_DIRECTLY", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_STATISTICS", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_LINES", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 } ], "MaxThreadsInOneTask" : 4, "Name" : "BR_1", "ReturnBarcodeZoneClarity" : 0, "SectionImageParameterArray" : [ { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_REGION_PREDETECTION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_BARCODE_LOCALIZATION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_Decode", "Section" : "ST_BARCODE_DECODING" } ], "StartSection" : "ST_REGION_PREDETECTION", "TerminateSetting" : { "Section" : "ST_NULL", "Stage" : "IRUT_NULL" }, "TextResultOrderModes" : [ { "Mode" : "TROM_CONFIDENCE" }, { "Mode" : "TROM_POSITION" }, { "Mode" : "TROM_FORMAT" } ] } ], "CaptureVisionTemplates" : [ { "ImageROIProcessingNameArray" : [ "roi_default" ], "ImageSource" : "", "MaxParallelTasks" : 4, "MinImageCaptureInterval" : 0, "Name" : "Default_1", "OutputOriginalImage" : 0, "SemanticProcessingNameArray" : null, "Timeout" : 100000 } ], "GlobalParameter" : { "MaxTotalImageDimension" : 0 }, "ImageParameterOptions" : [ { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, { "Mode" : "GEM_GRAY_EQUALIZE", "Sensitivity" : 5, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, { "Mode" : "GEM_GRAY_SMOOTH", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : 3, "SmoothBlockSizeY" : 3 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_1", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 2300, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : -1, "LetterHeightThreshold" : 0, "Mode" : "SUM_AUTO", "ModuleSizeThreshold" : 0, "TargetLetterHeight" : 0, "TargetModuleSize" : 0 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] }, { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_Decode", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 99999, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : -1, "LetterHeightThreshold" : 0, "Mode" : "SUM_AUTO", "ModuleSizeThreshold" : 0, "TargetLetterHeight" : 0, "TargetModuleSize" : 0 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] } ], "TargetROIDefOptions" : [ { "BaseTargetROIDefName" : "", "Location" : { "Offset" : { "FirstPoint" : [ 0, 0, 1, 1 ], "FourthPoint" : [ 0, 100, 1, 1 ], "MeasuredByPercentage" : 1, "ReferenceObjectOriginIndex" : 0, "ReferenceObjectType" : "ROT_ATOMIC_OBJECT", "ReferenceXAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 0, "LengthReference" : "LR_X", "RotationAngle" : 90 }, "ReferenceYAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 1, "LengthReference" : "LR_Y", "RotationAngle" : 90 }, "SecondPoint" : [ 100, 0, 1, 1 ], "ThirdPoint" : [ 100, 100, 1, 1 ] } }, "Name" : "roi_default", "PauseFlag" : 0, "TaskSettingNameArray" : [ "BR_1" ] } ] }

Issue: Barcodes printed on a textured background are more difficult to decode. For example, the barcodes in the sample image are printed on a red-striped backgroud, which affects the binarization result. Solution: We can increase the weight of the red channel during the binarization process to reduce the impact of the red stripes. { "BarcodeReaderTaskSettingOptions" : [ { "BarcodeColourModes" : null, "BarcodeComplementModes" : [ { "Mode" : "BCM_SKIP" } ], "BarcodeFormatIds" : [ "BF_DEFAULT" ], "BaseBarcodeReaderTaskSettingName" : "", "DPMCodeReadingModes" : [ { "BarcodeFormat" : "BF_DATAMATRIX", "Mode" : "DPMCRM_SKIP" } ], "DeblurModes" : null, "DeformationResistingModes" : [ { "BinarizationMode" : { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 }, "GrayscaleEnhancementMode" : { "Mode" : "GEM_AUTO", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, "Level" : 5, "Mode" : "DRM_SKIP" } ], "ExpectedBarcodesCount" : 2, "LocalizationModes" : [ { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_CONNECTED_BLOCKS", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_SCAN_DIRECTLY", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_STATISTICS", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_LINES", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 } ], "MaxThreadsInOneTask" : 4, "Name" : "BR_1", "ReturnBarcodeZoneClarity" : 0, "SectionImageParameterArray" : [ { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_REGION_PREDETECTION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_BARCODE_LOCALIZATION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_Decode", "Section" : "ST_BARCODE_DECODING" } ], "StartSection" : "ST_REGION_PREDETECTION", "TerminateSetting" : { "Section" : "ST_NULL", "Stage" : "IRUT_NULL" }, "TextResultOrderModes" : [ { "Mode" : "TROM_CONFIDENCE" }, { "Mode" : "TROM_POSITION" }, { "Mode" : "TROM_FORMAT" } ] } ], "CaptureVisionTemplates" : [ { "ImageROIProcessingNameArray" : [ "roi_default" ], "ImageSource" : "", "MaxParallelTasks" : 4, "MinImageCaptureInterval" : 0, "Name" : "Default_1", "OutputOriginalImage" : 0, "SemanticProcessingNameArray" : null, "Timeout" : 3500 } ], "GlobalParameter" : { "MaxTotalImageDimension" : 0 }, "ImageParameterOptions" : [ { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 30, "BlockSizeY" : 30, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : 0, "GreenChannelWeight" : 0, "Mode" : "CICM_GENERAL", "RedChannelWeight" : 1000, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_1", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 2300, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : -1, "LetterHeightThreshold" : 0, "Mode" : "SUM_AUTO", "ModuleSizeThreshold" : 0, "TargetLetterHeight" : 0, "TargetModuleSize" : 0 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] }, { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_Decode", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 99999, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : -1, "LetterHeightThreshold" : 0, "Mode" : "SUM_AUTO", "ModuleSizeThreshold" : 0, "TargetLetterHeight" : 0, "TargetModuleSize" : 0 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] } ], "TargetROIDefOptions" : [ { "BaseTargetROIDefName" : "", "Location" : { "Offset" : { "FirstPoint" : [ 0, 0, 1, 1 ], "FourthPoint" : [ 0, 100, 1, 1 ], "MeasuredByPercentage" : 1, "ReferenceObjectOriginIndex" : 0, "ReferenceObjectType" : "ROT_ATOMIC_OBJECT", "ReferenceXAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 0, "LengthReference" : "LR_X", "RotationAngle" : 90 }, "ReferenceYAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 1, "LengthReference" : "LR_Y", "RotationAngle" : 90 }, "SecondPoint" : [ 100, 0, 1, 1 ], "ThirdPoint" : [ 100, 100, 1, 1 ] } }, "Name" : "roi_default", "PauseFlag" : 0, "TaskSettingNameArray" : [ "BR_1" ] } ] }

Issue: The higher the QR code version, the more data modules there are and the more challenging it is to read such dense QR codes. Solution: Dynamsoft Barcode Reader uses a special algorithm optimized for reading a dense QR code. Set the appropriate ScaleUpModes, which determines the process for scaling up an image for detecting barcodes with a small module size. { "BarcodeReaderTaskSettingOptions" : [ { "BarcodeColourModes" : null, "BarcodeComplementModes" : [ { "Mode" : "BCM_SKIP" } ], "BarcodeFormatIds" : [ "BF_QR_CODE" ], "BaseBarcodeReaderTaskSettingName" : "", "DPMCodeReadingModes" : [ { "BarcodeFormat" : "BF_DATAMATRIX", "Mode" : "DPMCRM_SKIP" } ], "DeblurModes" : null, "DeformationResistingModes" : [ { "BinarizationMode" : { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 }, "GrayscaleEnhancementMode" : { "Mode" : "GEM_AUTO", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, "Level" : 5, "Mode" : "DRM_SKIP" } ], "ExpectedBarcodesCount" : 0, "LocalizationModes" : [ { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_CONNECTED_BLOCKS", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_SCAN_DIRECTLY", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_STATISTICS", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_LINES", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 } ], "MaxThreadsInOneTask" : 4, "Name" : "BR_1", "ReturnBarcodeZoneClarity" : 0, "SectionImageParameterArray" : [ { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_REGION_PREDETECTION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_BARCODE_LOCALIZATION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_Decode", "Section" : "ST_BARCODE_DECODING" } ], "StartSection" : "ST_REGION_PREDETECTION", "TerminateSetting" : { "Section" : "ST_NULL", "Stage" : "IRUT_NULL" }, "TextResultOrderModes" : [ { "Mode" : "TROM_CONFIDENCE" }, { "Mode" : "TROM_POSITION" }, { "Mode" : "TROM_FORMAT" } ] } ], "CaptureVisionTemplates" : [ { "ImageROIProcessingNameArray" : [ "roi_default" ], "ImageSource" : "", "MaxParallelTasks" : 4, "MinImageCaptureInterval" : 0, "Name" : "Default_1", "OutputOriginalImage" : 0, "SemanticProcessingNameArray" : null, "Timeout" : 5000 } ], "GlobalParameter" : { "MaxTotalImageDimension" : 0 }, "ImageParameterOptions" : [ { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_1", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 99999, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : 0, "LetterHeightThreshold" : 0, "Mode" : "SUM_LINEAR_INTERPOLATION", "ModuleSizeThreshold" : 4, "TargetLetterHeight" : 0, "TargetModuleSize" : 6 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] }, { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_Decode", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 99999, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : -1, "LetterHeightThreshold" : 0, "Mode" : "SUM_AUTO", "ModuleSizeThreshold" : 0, "TargetLetterHeight" : 0, "TargetModuleSize" : 0 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] } ], "TargetROIDefOptions" : [ { "BaseTargetROIDefName" : "", "Location" : { "Offset" : { "FirstPoint" : [ 0, 0, 1, 1 ], "FourthPoint" : [ 0, 100, 1, 1 ], "MeasuredByPercentage" : 1, "ReferenceObjectOriginIndex" : 0, "ReferenceObjectType" : "ROT_ATOMIC_OBJECT", "ReferenceXAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 0, "LengthReference" : "LR_X", "RotationAngle" : 90 }, "ReferenceYAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 1, "LengthReference" : "LR_Y", "RotationAngle" : 90 }, "SecondPoint" : [ 100, 0, 1, 1 ], "ThirdPoint" : [ 100, 100, 1, 1 ] } }, "Name" : "roi_default", "PauseFlag" : 0, "TaskSettingNameArray" : [ "BR_1" ] } ] }

Issue: Direct Part Marks (DPM) are codes, symbols, and texts that are etched or printed directly onto the surface of a part, which has a different texture from marks printed on paper. They are often inverted on a dark surface. Solution: Enable the DPM reading mode and invert the color of the image using GrayscaleTransformationModes. { "BarcodeReaderTaskSettingOptions" : [ { "BarcodeColourModes" : null, "BarcodeComplementModes" : [ { "Mode" : "BCM_SKIP" } ], "BarcodeFormatIds" : [ "BF_DEFAULT" ], "BaseBarcodeReaderTaskSettingName" : "", "DPMCodeReadingModes" : [ { "BarcodeFormat" : "BF_DATAMATRIX", "Mode" : "DPMCRM_GENERAL" } ], "DeblurModes" : null, "DeformationResistingModes" : [ { "BinarizationMode" : { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 }, "GrayscaleEnhancementMode" : { "Mode" : "GEM_AUTO", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, "Level" : 5, "Mode" : "DRM_SKIP" } ], "ExpectedBarcodesCount" : 0, "LocalizationModes" : [ { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_CONNECTED_BLOCKS", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_SCAN_DIRECTLY", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_STATISTICS", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_LINES", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 } ], "MaxThreadsInOneTask" : 4, "Name" : "BR_1", "ReturnBarcodeZoneClarity" : 0, "SectionImageParameterArray" : [ { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_REGION_PREDETECTION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_BARCODE_LOCALIZATION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_Decode", "Section" : "ST_BARCODE_DECODING" } ], "StartSection" : "ST_REGION_PREDETECTION", "TerminateSetting" : { "Section" : "ST_NULL", "Stage" : "IRUT_NULL" }, "TextResultOrderModes" : [ { "Mode" : "TROM_CONFIDENCE" }, { "Mode" : "TROM_POSITION" }, { "Mode" : "TROM_FORMAT" } ] } ], "CaptureVisionTemplates" : [ { "ImageROIProcessingNameArray" : [ "roi_default" ], "ImageSource" : "", "MaxParallelTasks" : 4, "MinImageCaptureInterval" : 0, "Name" : "Default_1", "OutputOriginalImage" : 0, "SemanticProcessingNameArray" : null, "Timeout" : 99999 } ], "GlobalParameter" : { "MaxTotalImageDimension" : 0 }, "ImageParameterOptions" : [ { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_INVERTED" } ], "IfEraseTextZone" : 1, "Name" : "IP_1", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 2300, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : -1, "LetterHeightThreshold" : 0, "Mode" : "SUM_AUTO", "ModuleSizeThreshold" : 0, "TargetLetterHeight" : 0, "TargetModuleSize" : 0 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] }, { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_Decode", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 99999, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : -1, "LetterHeightThreshold" : 0, "Mode" : "SUM_AUTO", "ModuleSizeThreshold" : 0, "TargetLetterHeight" : 0, "TargetModuleSize" : 0 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] } ], "TargetROIDefOptions" : [ { "BaseTargetROIDefName" : "", "Location" : { "Offset" : { "FirstPoint" : [ 0, 0, 1, 1 ], "FourthPoint" : [ 0, 100, 1, 1 ], "MeasuredByPercentage" : 1, "ReferenceObjectOriginIndex" : 0, "ReferenceObjectType" : "ROT_ATOMIC_OBJECT", "ReferenceXAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 0, "LengthReference" : "LR_X", "RotationAngle" : 90 }, "ReferenceYAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 1, "LengthReference" : "LR_Y", "RotationAngle" : 90 }, "SecondPoint" : [ 100, 0, 1, 1 ], "ThirdPoint" : [ 100, 100, 1, 1 ] } }, "Name" : "roi_default", "PauseFlag" : 0, "TaskSettingNameArray" : [ "BR_1" ] } ] }

Issue: When you scan a barcode from a screen on a monitor, a TV or a mobile phone, the image contains roughly parallel dark and light bands superimposed, called the moiré pattern. The interfering pattern makes decoding the barcode very challenging. Solution: Dynamsoft Barcode Reader SDK provides an image processing step to remove the moiré texture and would quickly decode the barcode. It can be configured through TextureDetectionModes. { "BarcodeReaderTaskSettingOptions" : [ { "BarcodeColourModes" : null, "BarcodeComplementModes" : [ { "Mode" : "BCM_SKIP" } ], "BarcodeFormatIds" : [ "BF_DEFAULT" ], "BaseBarcodeReaderTaskSettingName" : "", "DPMCodeReadingModes" : [ { "BarcodeFormat" : "BF_DATAMATRIX", "Mode" : "DPMCRM_SKIP" } ], "DeblurModes" : null, "DeformationResistingModes" : [ { "BinarizationMode" : { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 }, "GrayscaleEnhancementMode" : { "Mode" : "GEM_AUTO", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, "Level" : 5, "Mode" : "DRM_SKIP" } ], "ExpectedBarcodesCount" : 0, "LocalizationModes" : [ { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_CONNECTED_BLOCKS", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_SCAN_DIRECTLY", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_STATISTICS", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 }, { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_LINES", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 } ], "MaxThreadsInOneTask" : 4, "Name" : "BR_1", "ReturnBarcodeZoneClarity" : 0, "SectionImageParameterArray" : [ { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_REGION_PREDETECTION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_BARCODE_LOCALIZATION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_Decode", "Section" : "ST_BARCODE_DECODING" } ], "StartSection" : "ST_REGION_PREDETECTION", "TerminateSetting" : { "Section" : "ST_NULL", "Stage" : "IRUT_NULL" }, "TextResultOrderModes" : [ { "Mode" : "TROM_CONFIDENCE" }, { "Mode" : "TROM_POSITION" }, { "Mode" : "TROM_FORMAT" } ] } ], "CaptureVisionTemplates" : [ { "ImageROIProcessingNameArray" : [ "roi_default" ], "ImageSource" : "", "MaxParallelTasks" : 4, "MinImageCaptureInterval" : 0, "Name" : "Default_1", "OutputOriginalImage" : 0, "SemanticProcessingNameArray" : null, "Timeout" : 10000 } ], "GlobalParameter" : { "MaxTotalImageDimension" : 0 }, "ImageParameterOptions" : [ { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_1", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 2300, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : -1, "LetterHeightThreshold" : 0, "Mode" : "SUM_AUTO", "ModuleSizeThreshold" : 0, "TargetLetterHeight" : 0, "TargetModuleSize" : 0 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] }, { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_Decode", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 99999, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : -1, "LetterHeightThreshold" : 0, "Mode" : "SUM_AUTO", "ModuleSizeThreshold" : 0, "TargetLetterHeight" : 0, "TargetModuleSize" : 0 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] } ], "TargetROIDefOptions" : [ { "BaseTargetROIDefName" : "", "Location" : { "Offset" : { "FirstPoint" : [ 0, 0, 1, 1 ], "FourthPoint" : [ 0, 100, 1, 1 ], "MeasuredByPercentage" : 1, "ReferenceObjectOriginIndex" : 0, "ReferenceObjectType" : "ROT_ATOMIC_OBJECT", "ReferenceXAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 0, "LengthReference" : "LR_X", "RotationAngle" : 90 }, "ReferenceYAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 1, "LengthReference" : "LR_Y", "RotationAngle" : 90 }, "SecondPoint" : [ 100, 0, 1, 1 ], "ThirdPoint" : [ 100, 100, 1, 1 ] } }, "Name" : "roi_default", "PauseFlag" : 0, "TaskSettingNameArray" : [ "BR_1" ] } ] }

Issue: Vehicle Identification Number (VIN) is sometimes accompanied with a code 39 barcode underneath. The placement is usually very tight and close to the series of digits resulting in a barcode with zero upper and lower margin. Many barcode scanners fail to read such barcodes. Solution: Dynamsoft offers many barcode localization methods catering to different usage scenarios. The Lines localization method localizes barcodes by searching for groups of lines. This is optimized for 1D and PDF417 barcodes which is suitable for identifying barcodes with little margin. { "BarcodeReaderTaskSettingOptions" : [ { "BarcodeColourModes" : null, "BarcodeComplementModes" : [ { "Mode" : "BCM_SKIP" } ], "BarcodeFormatIds" : [ "BF_DEFAULT" ], "BaseBarcodeReaderTaskSettingName" : "", "DPMCodeReadingModes" : [ { "BarcodeFormat" : "BF_DATAMATRIX", "Mode" : "DPMCRM_SKIP" } ], "DeblurModes" : null, "DeformationResistingModes" : [ { "BinarizationMode" : { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 }, "GrayscaleEnhancementMode" : { "Mode" : "GEM_AUTO", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 }, "Level" : 5, "Mode" : "DRM_SKIP" } ], "ExpectedBarcodesCount" : 0, "LocalizationModes" : [ { "ConfidenceThreshold" : 60, "IsOneDStacked" : 0, "Mode" : "LM_LINES", "ModuleSize" : 0, "ScanDirection" : 0, "ScanStride" : 0 } ], "MaxThreadsInOneTask" : 4, "Name" : "BR_1", "ReturnBarcodeZoneClarity" : 0, "SectionImageParameterArray" : [ { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_REGION_PREDETECTION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_1", "Section" : "ST_BARCODE_LOCALIZATION" }, { "ContinueWhenPartialResultsGenerated" : 1, "ImageParameterName" : "IP_Decode", "Section" : "ST_BARCODE_DECODING" } ], "StartSection" : "ST_REGION_PREDETECTION", "TerminateSetting" : { "Section" : "ST_NULL", "Stage" : "IRUT_NULL" }, "TextResultOrderModes" : [ { "Mode" : "TROM_CONFIDENCE" }, { "Mode" : "TROM_POSITION" }, { "Mode" : "TROM_FORMAT" } ] } ], "CaptureVisionTemplates" : [ { "ImageROIProcessingNameArray" : [ "roi_default" ], "ImageSource" : "", "MaxParallelTasks" : 4, "MinImageCaptureInterval" : 0, "Name" : "Default_1", "OutputOriginalImage" : 0, "SemanticProcessingNameArray" : null, "Timeout" : 99999 } ], "GlobalParameter" : { "MaxTotalImageDimension" : 0 }, "ImageParameterOptions" : [ { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_1", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 2300, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : -1, "LetterHeightThreshold" : 0, "Mode" : "SUM_AUTO", "ModuleSizeThreshold" : 0, "TargetLetterHeight" : 0, "TargetModuleSize" : 0 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] }, { "BaseImageParameterName" : "", "BinarizationModes" : [ { "BinarizationThreshold" : -1, "BlockSizeX" : 0, "BlockSizeY" : 0, "EnableFillBinaryVacancy" : 1, "GrayscaleEnhancementModesIndex" : -1, "Mode" : "BM_LOCAL_BLOCK", "MorphOperation" : "Close", "MorphOperationKernelSizeX" : -1, "MorphOperationKernelSizeY" : -1, "MorphShape" : "Rectangle", "ThresholdCompensation" : 10 } ], "ColourConversionModes" : [ { "BlueChannelWeight" : -1, "GreenChannelWeight" : -1, "Mode" : "CICM_GENERAL", "RedChannelWeight" : -1, "ReferChannel" : "H_CHANNEL" } ], "GrayscaleEnhancementModes" : [ { "Mode" : "GEM_GENERAL", "Sensitivity" : -1, "SharpenBlockSizeX" : -1, "SharpenBlockSizeY" : -1, "SmoothBlockSizeX" : -1, "SmoothBlockSizeY" : -1 } ], "GrayscaleTransformationModes" : [ { "Mode" : "GTM_ORIGINAL" } ], "IfEraseTextZone" : 1, "Name" : "IP_Decode", "RegionPredetectionModes" : [ { "AspectRatioRange" : "[]", "FindAccurateBoundary" : 0, "ForeAndBackgroundColours" : "[]", "HeightRange" : "[]", "ImageParameterName" : "", "MeasuredByPercentage" : 1, "MinImageDimension" : 262144, "Mode" : "RPM_GENERAL", "RelativeRegions" : "[]", "Sensitivity" : 1, "SpatialIndexBlockSize" : 5, "WidthRange" : "[]" } ], "ScaleDownThreshold" : 99999, "ScaleUpModes" : [ { "AcuteAngleWithXThreshold" : -1, "LetterHeightThreshold" : 0, "Mode" : "SUM_AUTO", "ModuleSizeThreshold" : 0, "TargetLetterHeight" : 0, "TargetModuleSize" : 0 } ], "TextDetectionMode" : { "CharHeightRange" : [ 1, 1000, 1 ], "Direction" : "UNKNOWN", "MaxSpacingInALine" : -1, "Mode" : "TTDM_LINE", "Sensitivity" : 3, "StringLengthRange" : null }, "TextureDetectionModes" : [ { "Mode" : "TDM_GENERAL_WIDTH_CONCENTRATION", "Sensitivity" : 5 } ] } ], "TargetROIDefOptions" : [ { "BaseTargetROIDefName" : "", "Location" : { "Offset" : { "FirstPoint" : [ 0, 0, 1, 1 ], "FourthPoint" : [ 0, 100, 1, 1 ], "MeasuredByPercentage" : 1, "ReferenceObjectOriginIndex" : 0, "ReferenceObjectType" : "ROT_ATOMIC_OBJECT", "ReferenceXAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 0, "LengthReference" : "LR_X", "RotationAngle" : 90 }, "ReferenceYAxis" : { "AxisType" : "AT_MIDPOINT_EDGE", "EdgeIndex" : 1, "LengthReference" : "LR_Y", "RotationAngle" : 90 }, "SecondPoint" : [ 100, 0, 1, 1 ], "ThirdPoint" : [ 100, 100, 1, 1 ] } }, "Name" : "roi_default", "PauseFlag" : 0, "TaskSettingNameArray" : [ "BR_1" ] } ] } Image Source: https://universe.roboflow.com/kirill-sergeev/vin-detection/