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Release Notes for Python SDK - 8.x

8.2 (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.
  • LocalizationMode LM_STATISTICS_POSTAL_CODE will not be added automatically when enabling Postal Code in your runtime settings. Instead, users must manually add it to the LocalizationMode array if it is required.


  • 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 Class.
  • Added support for Python 3.9.


  • 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.

8.1 (01/19/2021)


  • Added support for MSI Code (Modified Plessey).
  • Added a new member barcode_zone_min_distance_to_image_borders in the PublicRuntimeSettings class 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 class PublicRuntimeSettings -> barcode_zone_min_distance_to_image_borders.
  • Added exception error message to TextResult when license initialization fails or decoding authorization fails.
  • Added a new abstract class TextResultResultCallBack which includes a abstract method text_results_callback_func. This method can be implemented in a subclass as a callback function to process text results generated during frame decoding.
  • Added a new abstract class IntermediateResultCallBack which includes a abstract method intermediate_results_callback_func. This method can be implemented in a subclass as a callback function to process intermediate results generated during frame decoding.
  • Added a new abstract class ErrorCallBack which includes a abstract method error_callback_func. This method can be implemented in a subclass as a callback function to process errors generated during frame decoding.
  • Redesigned the start_video_mode interface so that you can use callback functions for TextResult, IntermediateResult and handling errors. Previously, it only worked with TextResult callback function.


  • 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.

8.0.1 (01/06/2021)


  • Fixed a typo in init_license_from_lts.

8.0 (11/26/2020)


  • 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.

This page is compatible for:

Version 7.5

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