CapCognition.Net.BarcodeScanning 2.2.1

Barcode and QR-Code Recognition

High-performance recognition of 1D and 2D barcodes with support for multi-barcode detection (multiple barcodes per image).
Recognized content can optionally be displayed as an overlay.

Supported Formats

• Aztec
• Codabar
• Code39
• Code93
• Code128
• DataMatrix
• EAN-8
• EAN-13
• ITF
• MaxiCode
• PharmaCode
• PDF417
• QR Code
• RSS14
• RSS Expanded
• UPC-A
• UPC-E
• UPC-EAN
• MSI
• IMB

Fluent API

Since version 2.1.0, a modern Fluent API is available to simplify configuration and integration of the barcode recognition workflow into your applications.
This makes setup more intuitive and reduces boilerplate code.

Licensing

This library can be used in trial mode.
The trial version is limited to a fixed number of recognition operations per application start.
Once the limit is reached, recognition will stop working until the application is restarted.

• The trial version is intended for testing and development purposes only.
• It is not intended for production use.
• The trial version can be used without time limits.

For production deployments, a license must be purchased.

Examples

See .NET LTS examples at CapCognition GitHub.

Documentation

See Documentation for more details.

Platform Support

• Windows x64
• Linux 64-bit
• Linux ARM 64-bit (e.g. Raspberry Pi OS)
  • Raspberry Pi OS 64-bit Bullseye (legacy)
  • Raspberry Pi OS 64-bit Bookworm

Only 64-bit operating systems are supported.

Release Notes

Version 2.2.1

• Improved compatibility with the updated asynchronous processing lifecycle in CapCognition.Net.Core
• Improved stability during parallel and continuous recognition

Version 2.2.0

• .NET 10
• AOT compilation support
• Library initialization simplified
• Continuous capturing and recognition switched to "Pull-Frame" mechanism for simpler and more efficient stream capturing

Version 2.1.5

• Updated NuGet dependencies

Version 2.1.4

• Multi-barcode detection performance improved
• New Binarizer (AdaptiveHybridBinarizer) added for better QR recognition in distorted and blurry images
• New QR Finder (ImprovedQRFinder) added for improved QR recognition in difficult conditions with shadows and low contrast
• New QR Decoder (ImprovedQRDecoder) added for better QR recognition in difficult conditions and perspective distortions
• Many speed optimizations and improvements for barcode recognition on ARM based systems (e.g. Raspberry Pi)

Version 2.1.3

• option switch fixed and optimized

Version 2.1.2

• Updated NuGet dependencies

Version 2.1.1

• options made disposable and some tool functions added

Version 2.1.0

• Added Fluent API for simplified configuration and integration

Version 2.0.2

• Updated NuGet dependencies

Decoder updates

MaxiCode and PharmaCode are publicly selectable again, and MSI/PharmaCode work in mixed format selections. Plessey has no decoder and is no longer listed in the public format enum; MSI remains a separate supported format. Numeric values of the other formats are unchanged.

All formats means the publicly supported enum entries. Undefined numeric format values are rejected. MaxiCode expects an isolated, axis-aligned symbol; it does not add a general perspective detector. PharmaCode has no direction marker or checksum: reading it backwards may yield a different valid number. In mixed selections it runs after the other decoders, including on subsequent frames.

The scanner tries full images in all enabled rotations first. If those attempts fail, it searches quadrants and the centre. Disable this extra work using BarcodeRecognitionOptions.TryQuadrantFallback = false or the builder's SetTryQuadrantFallback(false).

QR results include mask, symbology identifier and corrected-error count metadata. Error counts are also returned for Aztec, Data Matrix, PDF417 and MaxiCode. Unsupported ECI encodings fail decoding rather than silently substituting UTF-8. Applications requiring legacy code pages should register their encoding provider before the first scan.