4.0.0

There are many API-breaking changes in this release. Check the wiki for information about how to use the latest version of the library: https://github.com/gali8/Tesseract-OCR-iOS/wiki

• Added "G8" prefix to classes.
• Added new NSOperation subclass (G8RecognitionOperation) for easily performing recognition asynchronously.
• Added option to set maximum allowed recognition time before Tesseract stops recognition.
• Added ability to fetch thresholded image from Tesseract.
• Added new class for organizing recognition info (G8RecognizedBlock).
• Added ability to provide Tesseract with configuration files.
• Added ability to use a custom path prefix for the tessdata folder.
• Added member variables for accessing Tesseract's page layout analysis (orientation, skew, etc.).
• Added member variable for setting image resolution.
• Added ability to clear Tesseract cache to free up memory.
• Added constants for parameters, PSM modes, orientations, iteration levels, and more.
• Added method to fetch hOCR information.
• Added unit tests and testing coverage.
• Updated initializers.
• Removed framework binary from repository.

Thanks to @bamx, @ws233, and @PatrickNLT for their contributions!

3.4.0

Version bump to 3.4.0 to get past CocoaPods not respecting that 3.1.1 is a newer version than 3.03 (it thinks 3.03 == 3.3). See #74.

3.1.1

• Switched to semantic versioning, as required by CocoaPods
• Fixed bug that affected support of x86_64 architectures (iOS 5S+ simulators)
• Updated leptonica library from 1.70 to 1.71

3.1

• CocoaPods

3.03

Thanks to Kevin Conley

• This update fixes the confidence value issue I reported in #56
• fixed the memory leak
• Modified characterBoxes function to return characters in order
• Removed unused lib files
• Added some null checks to fix a bug where no text is recognized
• Note: Building the Tesseract OCR Aggregate product will yield a warning about how the Tesseract and Leptonica lib files don't work for the x86_64 architecture. However, everything still works in the simulator for iPhone 5 and lower, as well as on all physical devices. I guess because the libraries work okay with the i386 target.
• New implementation based off the API examples for tesseract-ocr

2.3

• Bug fixing.
• CoreImage filters: use [img blackAndWhite]; to convert the UIImage to recognize into a RecognizeImageType
• Rect: use [tesseract setRect:CGRectMake(20, 20, 100, 100)] to define the rect where the text must be recognized

2.22

• CocoaPods