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ChangeLog.md

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Version 3.0.2

Version 3.0.1

Version 3.0.0 (Tesseract 3.04)

Breaking Changes

  • Requires VS 2013 runtime as the included Tesseract binaries are now compiled with VS 2013.

Other Changes

  • Update Tesseract binaries to 3.04 - Issue 168
  • Iterator.GetImage throws ArgumentException: Pix handle must not be zero - Issue 206
  • Support for ChoiceIterator - Issue 129
  • Support for classify_bln_numeric_mode - Issue 52
  • Support for setting Init only variables - Issue 70
  • Support for copying\cloning an iterator - Issue 25

Version 2.4.1

  • Fixed memory leak in Pix.BinarizeOtsuAdaptiveThreshold, Pix.BinarizeSauvola, and Pix.BinarizeSauvolaTiled - Issue 218

Version 2.4.0

  • Support for scaling images - Issue 183
  • Provide meaningful defaults for Pix.ConvertToGrayscale - Issue 184
  • Make TesseractException serialisable - Issue 194

Version 2.3.0

  • Support for OsdOnly mode - Issue 156
  • Support for saving the thresholded image to tessinput.tif when tessedit_write_images is set - Issue 160
  • Support for specifying custom search directory for dlls and improved logging - Issue 157

Version 2.2.0

  • Improved error message when dll failed to load - Issue 141
  • Changed TesseractEngine's constructors to use overloading rather than default parameters - Issue 146
  • Added support for Sauvola Binarization.

Version 2.1.1

  • Bug fix - Added null ptr checks to PageIterator and ResultIterator

Version 2.1.0

  • Support for loading config files
  • Support for loading Pix from memory

Version 2.0.0

Note: Version 2 was initially going to introduce support for Tesseract 3.03 however as that hasn't been released yet and we have a few minor breaking changes due to Mono support which require a version increment (we use semantic versioning). Once the next version of tesseract is released we'll add it.

Breaking changes from 1.0

  • Tesseract.Interop is now internal which means we can make as many interop changes as we like as long as the public version doesn't change
  • TesseractEngine.Handle, Pix.Handle, and PixColormap.Handle are now internal
  • Logging is done to the Tesseract source, not Default.

New features

Bug fixes

  • Fixed UTF8 handling for SetVariable (support for non-english languages) Issue 120 & Issue 68

Version 1.12

  • Automatically strip '' and '/' characters of path and remove tessdata prefix.
  • Fixed bug introduced in previous region of interest
  • Don't dispose of Pix generated when processing a Bitmap till the Page is disposed off.

Version 1.11

  • Allow changing the current region of interest without having to reload the entire image (Page.RegionOfInterest)
  • Fixed loader for ASP.NET Issue 97

Version 1.10

  • Added support for uzn files - Issue 66