--- layout: default-layout title: Release Notes v8.x - Dynamsoft Barcode Reader SDK .NET Edition description: Release notes for Dynamsoft Barcode Reader SDK .NET Edition v8.x, covering new localization modes, confidence scoring improvements, and other enhancements. keywords: release notes, .net needAutoGenerateSidebar: true needGenerateH3Content: false noTitleIndex: true --- # Release Notes for .NET SDK - 8.x ## 8.8.0 (10/12/2021) ### 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. ### Changelog #### New - Added a new `LocalizationModes` item `LM_ONED_FAST_SCAN`, which significantly improved the localization speed for 1D barcodes. #### Improved - Improved the confidence calculation algorithm for 2D barcode results. Users can get even more accurate results by configuring the confidence filter. - Improved the barcode reading speed by applying the localized barcodes filter. The barcodes will be filtered according to the parameters `BarcodeHeightRangeArray`, `BarcodeWidthRangeArray`, `BarcodeAngleRangeArray` and `MinRatioOfBarcodeZoneWidthToHeight`. - Updated the exception message when the full license is invalid or has expired. #### 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) ### Highlights - 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`. ### Changelog #### New - Added two DeblurMode Enumerations, `DM_BASED_ON_LOC_BIN` and `DM_SHARPENING_SMOOTHING`, to support more usage scenarios. - Added methods `InitDLSConnectionParameters` and `InitLicenseFromDLS` in `BarcodeReader` class to replace methods `InitLTSConnectionParameters` and `InitLicenseFromLTS`. - Added class `DMDLSConnectionParameters` to replace class `DMLTSConnectionParameters`. #### Improved - 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) ### New - 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. ### Improved - Faster recognition speeds when detecting dense QR Codes. - Improved the performance of boundary identification for DataMatrix codes. ### Deprecated - `ThreshValueCoefficient` is now deprecated. It still works in this version but could be removed in the near future. We recommend using ThresholdCompensation instead. ### Fixed - Fixed a bug that may cause the error 'Failed to get the address of DBR_CreateInstance' when initializing DBR. - Fixed an issue that happens when calling initLicenseFromLTS if `handShakeCode` is not set. ## 8.2.0 (03/17/2021) ### New - 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 - 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. ### Fixed - Resolved a bug that infrequently causes the application to crash when decoding a MicroPDF417 barcode. ## 8.1.2 (01/22/2021) ### New - Added `Mode`, `Page`, `TotalPage` and `ParityData` in the `QRCodeDetails` Class. ### Improved - Improved the recognition accuracy for GS1 Databar. - Removed the exception code from `BarcodeText` when using a valid trial license. - Included native C++ DLL files in the .NET assembly files, so users don't need to manually copy these files to the specific folder. ### Fixed - Fixed a bug where `BarcodeFormatString`, `BarcodeFormatString_2`, `RegionName` and `DocumentName` don't have value in the `IRT_TYPED_BARCODE_ZONE` intermediate result. ## 8.1.0 (01/12/2021) ### New - 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 - 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 - 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) ### New - 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 argument, SpatialIndexBlockSize, for RPM_GENERAL_RGB_CONTRAST, RPM_GENERAL_GRAY_CONTRAST and RPM_GENERAL_HSV_CONTRAST. - 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 - Improved the localization speed for the ScanDirectly mode. - Improved the localization accuracy for DataMatrix codes with a narrow quiet zone. ### 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. - The .NET assembly DLL file (Dynamsoft.BarcodeReader.dll) does not include compressed C++ DLLs. Now, users need to distribute Dynamsoft.BarcodeReader.dll, DynamsoftCommon.dll, x86/x64 folders with the application.