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Release Notes for C SDK - 8.x

8.8.0 (10/12/2021)

Version Highlights

  • Added a new localization mode ONED_FAST_SCAN, which significantly improved the localization speed for 1D barcodes.
  • Added the ability to specify barcode width, height, angle to improve the recognition speed if you have advance information about barcodes.
  • Optimized the logic of confidence scoring for 2D barcodes. The 2D barcode results with confidence greater than 30 are more accurate.

Edition Highlights

  • Added ARM64 components to the SDK.



  • Added ARM64 components to the SDK.
  • Added a new LocalizationModes item LM_ONED_FAST_SCAN, which significantly improved the localization speed for 1D barcodes.


Breaking Change(s)

  • The low confidence barcode results will no longer be returned by default. The default value of parameter minResultConfidence is preset to 30, which can filter out the majority of misreading results and keep as many correct results as possible.

8.6.0 (07/15/2021)


  • Improved the confidence calculating algorithm for 1D barcodes. Misreading rate of results with confidence between 30-100 has been significantly reduced.
  • Improved the reading speed on clear images by implementing a new deblur mode DM_BASED_ON_LOC_BIN.



  • Added two DeblurMode Enumerations, DM_BASED_ON_LOC_BIN and DM_SHARPENING_SMOOTHING, to support more usage scenarios.
  • Added method DBR_InitDLSConnectionParameters to replace DBR_InitLTSConnectionParameters.
  • Added method DBR_InitLicenseFromDLS to replace DBR_InitLicenseFromLTS.
  • Added struct DM_DLSConnectionParameters to replace struct DM_LTSConnectionParameters.


  • Improved the confidence algorithm for 1D barcode results. Users can get even more accurate results by configuring the confidence filter.

8.4.0 (06/08/2021)


  • Added a new method GetIdleInstancesCount to return the number of available instances when using the ‘per concurrent instance’ licensing model.
  • Added the organizationID property for license authentication.
  • Added a new attribute isMirrored to the TextResult class. isMirrored returns whether the barcode is mirrored.
  • Added a new attribute isDPM to the TextResult class. isDPM returns whether the barcode is recognized by the DPM mode.
  • Added a new argument, ThresholdCompensation, to the BinarizationModes mode arguments.


  • Faster recognition speeds when detecting dense QR Codes.
  • Improved the performance of boundary identification for DataMatrix codes.


  • ThreshValueCoefficient is now deprecated. It still works in this version but could be removed in the near future. We recommend using ThresholdCompensation instead.


  • Fixed an issue that happens when calling initLicenseFromLTS if handShakeCode is not set.

8.2.0 (03/17/2021)


  • Added a new mode argument, FindAccurateBoundary, to RegionPredetectionModes that determines if the SDK attempts to find an accurate boundary when RegionPredetectionModes is set to RPM_GENERAL_HSV_CONTRAST.


  • Improved both the localization and decoding algorithms for Postal Codes.
  • Localization mode LM_STATISTICS_POSTAL_CODE will not be added automatically when barcode format postal code is enabled. You can still add LM_STATISTICS_POSTAL_CODE manually to get better performance on localizing the postal codes.


  • Resolved a bug that infrequently causes the application to crash when decoding a MicroPDF417 barcode.

8.1.2 (01/22/2021)


  • Added mode, page, totalPage and parityData in the QRCodeDetails Struct.


  • Improved the recognition accuracy for GS1 Databar.
  • Removed the exception code from barcodeText when using a valid trial license.


  • Fixed a bug where barcodeFormatString, barcodeFormatString_2, regionName and documentName don’t have value in the IRT_TYPED_BARCODE_ZONE intermediate result.



  • Added support for MSI Code (Modified Plessey).
  • Added a new member barcodeZoneMinDistanceToImageBorders in the PublicRuntimeSettings struct to set the minimum distance (in pixels) between barcode zone and image borders. Previously, it is only available in the JSON template. It can be now configured by setting the struct PublicRuntimeSettings -> barcodeZoneMinDistanceToImageBorders.
  • Added exception error message to TextResult when license initialization fails or decoding authorization fails.


  • Improved the localization robustness for QR Code.
  • Improved the localization for low quality 1D barcodes.
  • Improved the deblurring performance and recognition rate for DataMatrix.
  • Improved the recognition rate for Aztec.


  • Fixed a bug where Micro PDF417 may not be localized in multiple-barcode scenarios.
  • Fixed a bug where the ExpectedBarcodesCount and BarcodeFormat parameters do not work in the RegionDefinition.

8.0.0 (11/17/2020)


  • Implemented the mechanism of loading libraries dynamically at runtime when Parameter Mode Enumerations are used (except *_AUTO and *_SKIP). Use LibraryFileName and LibraryParameters to configure.
  • (For IntermediateResult Advanced Module) Added support for decoding IntermediateResult. For example, users with a binarized image could use this function to skip some image preprocessing steps.
  • Implemented a new licensing tracking mechanism, License 2.0, which makes it easier for users to track license usage.
  • Added a new format control parameter, BarcodeZoneMinDistanceToImageBorders, to set the minimum distance (in pixels) between the barcode zone and image borders.
  • Added a new format control parameter, MinRatioOfBarcodeZoneWidthToHeight, to set the minimum ratio (width/height) of the barcode zone.
  • Added a new format control parameter, BarcodeZoneBarCountRangeArray, to set the barcode zone’s range of bar count for barcode search.
  • Added a new parameter, DeblurModes, so users can use different deblur algorithms for different scenarios. DeblurModes has the following enum types: DirectBinarization, ThresholdBinarization, GrayEqulization, Smoothing, Morphing, DeepAnalysis and Sharpening.


  • Improved the localization speed for the ScanDirectly mode.
  • Improved the localization accuracy for DataMatrix codes with a narrow quiet zone.


  • Fixed a crash issue that could happen when conflicts occur on Linux.

Feature Deprecated

  • DeblurLevel is now deprecated. It still works in this version but could be removed in the near future. We recommend using DeblurModes instead.


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Version 7.5.0

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