flutter_mrz_scanner_enhanced 3.2.0

Scans MRZ (Machine Readable Zone) from identity documents for iOS and Android.

3.2.0

Added a notice in the README that future updates will not be released due to lack of iOS testing capability and time constraints. Documented common issues: OCR accuracy is generally good, but parsing may fail even with correct OCR results (possible MRZ Parser issue). Fotoapparat dependency needs to be updated to a working fork and Maven issues fixed (Fotoapparat is now on Maven Central). Cropped MRZ area image is not properly displayed. Updated README with these details and guidance for users.

3.1.9

Corrected import mistake on README file

For iOS support, I have implemented the necessary changes to enable compatibility with iOS 13 and later versions. However, due to limited access to macOS development environment (only had access for a few hours) and Apple's requirement for physical device testing, I was unable to thoroughly test the Swift-based MRZ OCR functionality on actual iOS devices.

3.1.8

3.1.7

updated min ios version

3.1.6

3.1.5

3.1.4

• specified IOS verion in Podfile

3.1.3

• 🛠️ Fixed: Resolved an app crash issue in version 3.1.2. Apologies for not testing on a real device prior to release.

3.1.2

3.1.1

• 🚀 Update: Added Coroutine Support for Async MRZ OCR

• 🔄 Changes Made

• Converted heavy MRZ processing to run off the UI thread using Kotlin coroutines.

• Matches Dart's isolate behavior for performance and responsiveness.

• Ensures camera and UI remain smooth during OCR

• ⚙️ Benefits

• Avoids UI freezes during OCR

• Improves overall performance

• Keeps native processing consistent with Dart isolate logic

3.1.0

• Temporarily disabled the Document Crop feature due to issues with document size inconsistencies.
• Added a feedback mechanism run /example camera_page.dart to view it,used for real-time interaction, providing users with updates instead of displaying a static loading screen.
• Implemented MRZ character replacement to address known OCR detection issues.
• Upgraded Java version to 17 to ensure compatibility with Flutter.

(by @ELMEHDAOUIAhmed)

3.0.9

-Enhanced iOS implementation to align with the Android improvements. -Further testing is needed—unfortunately, I can't test it on iOS. If anyone with an iOS device could help and get in touch, I'd really appreciate it. You can find my contact details on my GitHub page.

(by @ELMEHDAOUIAhmed)

3.0.8

MRZ Cropping Enhancement

Unified Function: Introduced a single function, calculateCutoutRect(Bitmap bitmap, Boolean cropToMRZ), which now supports two cropping modes:

• Document Crop: When cropToMRZ is false, the image is cropped to the full document area with a 10% margin expansion (adjustable if needed; change val marginPercentage = 0.1, where 0.1 is 10%).
• MRZ Crop: When cropToMRZ is true, the image is cropped to only the MRZ area (35% of the document frame's height), accurately matching the measurements from the Flutter overlay.

Improved Accuracy

Consistent Document Ratio: The cropping calculations now use the same document frame ratio (86/55) and center the document area within the bitmap, ensuring consistent results across both native Android and Flutter overlays.

• val cropped = calculateCutoutRect(rotated, true) // use false if you don't want to crop to MRZ area

Bug Fixes

Correct Cropping Values: Fixed issues where incorrect cropping values might have been applied, ensuring the correct area is captured for MRZ scanning.

Enjoy the enhanced MRZ scanning functionality!

(by @ELMEHDAOUIAhmed)

3.0.7

improved performance, and adjusted document size, also added 10% margin to expand the crop region (10% extra on each side) (margin of error)

3.0.6

3.0.5

• updated README file

3.0.5

• missing package import fix

3.0.4

• missing package import fix

3.0.3

• missing package import fix

3.0.2

• Path error fix
  • Fixed path issue when importing package

(by @ELMEHDAOUIAhmed my apologies, trying to always on the lookout for issues)

3.0.1

• Path error fix
  • Fixed path issue when importing package

(by @ELMEHDAOUIAhmed)

3.0.0

• OCR Optimization: Implemented character whitelisting for MRZ-specific characters (ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789<)
• Image Processing Enhancements:
  • Improved document cropping accuracy
  • Added grayscale conversion pipeline
  • Optimized binarization thresholds for better text recognition
• Camera Improvements:
  • Upgraded Fotoapparat implementation with better focus handling
  • Enhanced frame processing reliability
• Overlay UI Updates:
  • Added dynamic scanning guidance indicators
  • Improved aspect ratio handling for different devices
• Validation System:
  • Implemented MRZ checksum verification
  • Added error correction heuristics
• Dependency Updates:
  • Upgraded Tesseract OCR to latest stable version
  • Migrated to latest Kotlin Gradle plugin
  • Updated Android target SDK to 34
• Breaking Change: Requires minimum Flutter 3.16.0

(by @ELMEHDAOUIAhmed)

2.1.1

• Add namespace (by @makhosi6)

2.1.0

• Support for Flutter 3.0.5 (by @dadagov125)

2.0.1

• Fix : Android crash (by @eusopht2021)

2.0.0

• Fix : iOS compiling errors for iOS 15 (by @gdaguin)
• Improvements : on Android, the camera is now focusing automatically (by @gdaguin)
• Port to null safety

1.0.0

• Android version redeveloped with Fotoapparat library
• Add overlay widget
• Flashlight on/off
• Take a photo

0.7.1

• Provide possibility to disable overlay

0.7.0

• First public version with basic iOS and Android scanners