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BARCODE READER SDK DEMO

Explore the flexibe barcode reading settings to optimize for your specific usage scenario.

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Try the most popular web scanner features: scan images, import local images and PDF files, edit, save to local, upload to database, and etc.

BARCODE READER JAVASCRIPT DEMO

Transform any camera-equipped devices into real-time, browser-based barcode and QR code scanners.

MRZ SCANNER WEB DEMO

Detects the machine-readable zone of a passport, scans the text, and parses into human-readable data.

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Table of contents

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Parameter Mode Enumeration

Enumeration Description
BarcodeColourMode Describes the barcode colour mode.
BarcodeComplementMode Describes the barcode complement mode.
BinarizationMode Describes the binarization mode.
ColourClusteringMode Describes the colour clustering mode.
ColourConversionMode Describes the colour conversion mode.
ConflictMode Describes the conflict mode.
DeblurMode Describes the deblur mode.
DeformationResistingMode Describes the deformation resisting mode.
DPMCodeReadingMode Describes the DPM code reading mode.
GrayscaleTransformationMode Describes the grayscale transformation mode.
ImagePreprocessingMode Describes the image preprocessing mode.
LocalizationMode Describes the localization mode.
PDFReadingMode Describes the PDF reading mode.
RegionPredetectionMode Describes the region predetection mode.
ScaleUpMode Describes the scale up mode.
TerminatePhase Describes the terminate phase.
TextFilterMode Describes the text filter mode.
TextureDetectionMode Describes the texture detection mode.

BarcodeColourMode

Describes the barcode colour mode.

Declarations

class EnumBarcodeColourMode(IntEnum)

Members

Member Value Description Valid Argument(s)
BICM_SKIP 0x00 Skips the barcode colour operation. N/A
BICM_DARK_ON_LIGHT 0x01 Dark items on a light background. LightReflection
BICM_LIGHT_ON_DARK 0x02 Light items on a dark background. Not supported yet. N/A
BICM_DARK_ON_DARK 0x04 Dark items on a dark background. Not supported yet. N/A
BICM_LIGHT_ON_LIGHT 0x08 Light items on a light background. Not supported yet. N/A
BICM_DARK_LIGHT_MIXED 0x10 The background is mixed by dark and light. Not supported yet. N/A
BICM_DARK_ON_LIGHT_DARK_SURROUNDING 0x20 Dark item on a light background surrounded by dark. LightReflection

BarcodeComplementMode

Describes the barcode complement mode.

Declarations

class EnumBarcodeComplementMode(IntEnum)

Members

Member Value Description
BCM_SKIP 0x00 Skips the barcode complement.
BCM_AUTO 0x01 Not supported yet.
BCM_GENERAL 0x02 Complements the barcode using the general algorithm.

BinarizationMode

Describes the binarization mode.

Declarations

class EnumBinarizationMode(IntEnum)

Members

Member Value Description Valid Argument(s)
BM_SKIP 0x00 Skips the binarization. N/A
BM_AUTO 0x01 Not supported yet. N/A
BM_LOCAL_BLOCK 0x02 Binarizes the image based on the local block. BlockSizeX
BlockSizeY
EnableFillBinaryVacancy
ImagePreprocessingModesIndex
ThresholdCompensation
BM_THRESHOLD 0x04 Performs image binarization based on the given threshold. BinarizationThreshold
ImagePreprocessingModesIndex

ColourClusteringMode

Describes the colour clustering mode.

Declarations

class EnumColourClusteringMode(IntEnum)

Members

Member Value Description Valid Argument(s)
CCM_SKIP 0x00 Skips the colour clustering. N/A
CCM_AUTO 0x01 Not supported yet. N/A
CCM_GENERAL_HSV 0x02 Clusters colours using the general algorithm based on HSV. Sensitivity

ColourConversionMode

Describes the colour conversion mode.

Declarations

class EnumColourConversionMode(IntEnum)

Members

Member Value Description Valid Argument(s)
CICM_SKIP 0x00 Skip the colour conversion. N/A
CICM_GENERAL 0x01 Converts a colour image to a grayscale image using the general algorithm. BlueChannelWeight
GreenChannelWeight
RedChannelWeight

ConflictMode

Describes the conflict mode.

Declarations

class EnumConflictMode(IntEnum)

Members

Member Value Description
CM_IGNORE 0x01 Ignores new settings and inherits the previous settings.
CM_OVERWRITE 0x02 Overwrites the old settings with new settings.

DeblurMode

Describes the deblur mode.

Declarations

class EnumDeblurMode(IntEnum)

Members

Member Value Description
DM_SKIP 0x00 Skips the deblur process.
DM_DIRECT_BINARIZATION 0x01 Performs deblur process using the direct binarization algorithm.
DM_THRESHOLD_BINARIZATION 0x02 Performs deblur process using the threshold binarization algorithm.
DM_GRAY_EQUALIZATION 0x04 Performs deblur process using the gray equalization algorithm.
DM_SMOOTHING 0x08 Performs deblur process using the smoothing algorithm.
DM_MORPHING 0x10 Performs deblur process using the morphing algorithm.
DM_DEEP_ANALYSIS 0x20 Performs deblur process using the deep analysis algorithm.
DM_SHARPENING 0x40 Performs deblur process using the sharpening algorithm.
DM_BASED_ON_LOC_BIN 0x80 Performs deblur process based on the binary image from the localization process.
DM_SHARPENING_SMOOTHING 0x100 Performs deblur process using the sharpening and smoothing algorithm.

DeformationResistingMode

Describes the deformation resisting mode.

Declarations

class EnumDeformationResistingMode(IntEnum)

Members

Member Value Description Valid Argument(s)
DRM_SKIP 0x00 Skip the deformation resisting. N/A
DRM_AUTO 0x01 Lets the library choose a mode automatically. N/A
DRM_GENERAL 0x02 Resists deformation using the general algorithm. Level
DRM_BROAD_WARP 0x04 Resists deformation when the barcode is warped gently. BinarizationMode
GrayscaleEnhancementMode
DRM_LOCAL_REFERENCE 0x08 Resists deformation for barcodes with minor deformation in local modules. BinarizationMode
GrayscaleEnhancementMode
DRM_DEWRINKLE 0x10 Resists deformation for barcodes on a wrinkled surface. BinarizationMode
GrayscaleEnhancementMode

DPMCodeReadingMode

Describes the DPM code reading mode.

Declarations

class EnumDPMCodeReadingMode(IntEnum)

Members

Member Value  
DPMCRM_SKIP 0x00 Skip the DPM code reading.
DPMCRM_AUTO 0x01 Not supported yet.
DPMCRM_GENERAL 0x02 Reads DPM code using the general algorithm.

GrayscaleTransformationMode

Describes the grayscale transformation mode.

Declarations

class EnumGrayscaleTransformationMode(IntEnum)

Members

Member Value Description
GTM_SKIP 0x00 Skips grayscale transformation.
GTM_INVERTED 0x01 Transforms to inverted grayscale. Recommended for light on dark images.
GTM_ORIGINAL 0x02 Keeps the original grayscale. Recommended for dark on light images.

ImagePreprocessingMode

Describes the image preprocessing mode.

Declarations

class EnumImagePreprocessingMode(IntEnum)

Members

Member Value Description Valid Argument(s)
IPM_SKIP 0x00 Skips image preprocessing. N/A
IPM_AUTO 0x01 Not supported yet. N/A
IPM_GENERAL 0x02 Takes the unpreprocessed image for following operations. N/A
IPM_GRAY_EQUALIZE 0x04 Preprocesses the image using the gray equalization algorithm. Sensitivity
IPM_GRAY_SMOOTH 0x08 Preprocesses the image using the gray smoothing algorithm. SmoothBlockSizeX
SmoothBlockSizeY
IPM_SHARPEN_SMOOTH 0x10 Preprocesses the image using the sharpening and smoothing algorithm. SmoothBlockSizeX
SmoothBlockSizeY
SharpenBlockSizeX
SharpenBlockSizeY
IPM_MORPHOLOGY 0x20 Preprocesses the image using the morphology algorithm. MorphOperation
MorphShape
MorphOperationKernelSizeX
MorphOperationKernelSizeY

LocalizationMode

Describes the localization mode.

Declarations

class EnumLocalizationMode(IntEnum)

Members

Member Value Description Valid Argument(s)
LM_SKIP 0x00 Skips localization. N/A
LM_AUTO 0x01 Not supported yet. N/A
LM_CONNECTED_BLOCKS 0x02 Localizes barcodes by searching for connected blocks. This algorithm usually gives best result and it is recommended to set ConnectedBlocks to the highest priority. N/A
LM_STATISTICS 0x04 Localizes barcodes by groups of contiguous black-white regions. This is optimized for QRCode and DataMatrix. N/A
LM_LINES 0x08 Localizes barcodes by searching for groups of lines. This is optimized for 1D and PDF417 barcodes. N/A
LM_SCAN_DIRECTLY 0x10 Localizes barcodes quickly. This mode is recommended in interactive scenario. ScanStride
ScanDirection
LM_STATISTICS_MARKS 0x20 Localizes barcodes by groups of marks.This is optimized for DPM codes. N/A
LM_STATISTICS_POSTAL_CODE 0x40 Localizes barcodes by groups of connected blocks and lines.This is optimized for postal codes. N/A
LM_CENTRE 0x80 Localizes barcodes from the centre of the image. N/A
LM_ONED_FAST_SCAN 0x100 Localizes 1D barcodes in a fast mode. ScanStride
ScanDirection
ConfidenceThreshold

PDFReadingMode

Describes the PDF reading mode.

Declarations

class EnumPDFReadingMode(IntEnum)

Members

Member Value Description
PDFRM_AUTO 0x01 Lets the library choose the reading mode automatically.
PDFRM_VECTOR 0x02 Detects barcode from vector data in PDF file.
PDFRM_RASTER 0x04 Converts the PDF file to image(s) first, then perform barcode recognition.

RegionPredetectionMode

Describes the region predetection mode.

Declarations

class EnumRegionPredetectionMode(IntEnum)

Members

Member Value Description Valid Argument(s)
RPM_SKIP 0x00 Skips region detection. N/A
RPM_AUTO 0x01 Lets the library choose an algorithm automatically to detect region. N/A
RPM_GENERAL 0x02 Takes the whole image as a region. N/A
RPM_GENERAL_RGB_CONTRAST 0x04 Detects region using the general algorithm based on RGB colour contrast. MinImageDimension
Sensitivity
SpatialIndexBlockSize
RPM_GENERAL_GRAY_CONTRAST 0x08 Detects region using the general algorithm based on gray contrast. MinImageDimension
Sensitivity
SpatialIndexBlockSize
RPM_GENERAL_HSV_CONTRAST 0x10 Detects region using the general algorithm based on HSV colour contrast. AspectRatioRange
FindAccurateBoundary
ForeAndBackgroundColours
HeightRange
MinImageDimension
RelativeBarcodeRegions
Sensitivity
SpatialIndexBlockSize
WidthRange

ScaleUpMode

Describes the scale up mode.

Declarations

class EnumScaleUpMode(IntEnum)

Members

Member Value Description Valid Argument(s)
SUM_SKIP 0x00 Skip the scale-up process. N/A
SUM_AUTO 0x01 The library chooses an interpolation method automatically to scale up. N/A
SUM_LINEAR_INTERPOLATION 0x02 Scales up using the linear interpolation method. AcuteAngleWithXThreshold
ModuleSizeThreshold
TargetModuleSize
SUM_NEAREST_NEIGHBOUR_INTERPOLATION 0x04 Scales up using the nearest-neighbour interpolation method. AcuteAngleWithXThreshold
ModuleSizeThreshold
TargetModuleSize

TerminatePhase

Describes the terminate phase.

Declarations

class EnumTerminatePhase(IntEnum)

Members

Member Value Description
TP_REGION_PREDETECTED 0x01 Exits the barcode reading algorithm after the region predetection is done.
TP_IMAGE_PREPROCESSED 0x02 Exits the barcode reading algorithm after the region predetection and image pre-processing is done.
TP_IMAGE_BINARIZED 0x04 Exits the barcode reading algorithm after the region predetection, image pre-processing, and image binarization are done.
TP_BARCODE_LOCALIZED 0x08 Exits the barcode reading algorithm after the region predetection, image pre-processing, image binarization, and barcode localization are done.
TP_BARCODE_TYPE_DETERMINED 0x10 Exits the barcode reading algorithm after the region predetection, image pre-processing, image binarization, barcode localization, and barcode type determining are done.
TP_BARCODE_RECOGNIZED 0x20 Exits the barcode reading algorithm after the region predetection, image pre-processing, image binarization, barcode localization, barcode type determining, and barcode recognition are done.

TextFilterMode

Describes the text filter mode.

Declarations

class EnumTextFilterMode(IntEnum)

Members

Member Value Description Valid Argument(s)
TFM_SKIP 0x00 Skip the text filtering. N/A
TFM_AUTO 0x01 Not supported yet. N/A
TFM_GENERAL_CONTOUR 0x02 Filters text using the general algorithm based on contour. MinImageDimension
Sensitivity

TextureDetectionMode

Describes the texture detection mode.

Declarations

class EnumTextureDetectionMode(IntEnum)

Members

Member Value Description Valid Argument(s)
TDM_SKIP 0x00 Skips texture detection. N/A
TDM_AUTO 0x01 Not supported yet. N/A
TDM_GENERAL_WIDTH_CONCENTRATION 0x02 Detects texture using the general algorithm. Sensitivity

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