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Tess4J Change Summary
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Version 0.1 - initial release (14 Aug 2010):
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- Java JNA-based wrapper for Tesseract OCR DLL 2.04
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- Support uncompressed, binary TIFF images
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Version 0.2 (16 Aug 2010):
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- Add support for more image formats (PNG, BMP, GIF, PDF, JPEG)
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- Add support for compressed, grayscale and colored images
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Version 0.3 (22 Aug 2010):
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- Include API support for BufferedImage
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- Clean up codes. Remove unsupported API and files
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- Document the API
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Version 0.3.1 (26 Aug 2010):
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- Send only pixel data, not whole image data, to Tesseract engine, to fix a bug that has erroneously put some words at beginning of line towards end of line
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Version 0.4 (1 Nov 2010):
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- Add JNA Direct Mapping calls, which can provide performance near that of custom JNI
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Version 1.0 (30 October 2012):
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- Upgrade to Tesseract 3.02 (r798), which is not backward compatible with Tesseract 2.04.
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- Implement a new JNA wrapper for the new Tesseract OCR API
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- Add more unit test cases
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- Update documentation
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Version 1.1 (3 March 2013)
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- Update Tesseract DLL to r828
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- Additional API methods, image helper methods, and unit test cases
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- Improve handling of Unicode character encoding
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- Fix memory leaks
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- Add support for determining skew angle and image rotation
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Version 1.2 (22 September 2013)
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- Update Tesseract DLL to r866
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- More efficient OCR of multiple images
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- Various minor improvements
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- Update JNA to v4.0
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Version 1.3 (31 May 2014)
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- Update JNA to v4.1.0
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- Update Ghost4J to v0.5.1
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- Refactoring
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- Bundle Tesseract and Leptonica 64-bit DLLs
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Version 1.4 (18 January 2015)
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- Refactor to reduce code duplication
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- Embed Windows native resources in JAR
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- Autoload Windows native libraries
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Version 1.4.1 (24 January 2015)
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- Enable use of jna.library.path system property for user-customizable path
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Version 1.5 (13 March 2015)
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- Add UNLV zone file support
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- Refactor
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Version 2.0 (29 March 2015)
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- Upgrade to Tesseract 3.03 (r1050), which is compatible with Tesseract 3.03RC on Linux
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- Refactor Tesseract class for extensibility and thread-safety
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- Update English language data for Tesseract 3.02
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Version 3.0 (25 December 2015)
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- Upgrade to Tesseract 3.04 (953523b)
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- Include Lept4J library
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- Incorporate slf4j and logback libraries for logging
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- Make GhostScript calls thread safe
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Version 3.1 (21 March 2016)
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- Update Tesseract to 3.04.01 (4ef68a0)
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- Use Lept4J-1.1.2 (Leptonica 1.72)
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- Update JNA to 4.2.2
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- Update Ghost4J to 1.0.1
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- Delete ResultRenderer after use to release PDF file handler
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Version 3.2 (15 May 2016)
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- Revert JNA to 4.1.0 due to "Invalid calling convention 63" errors invoking GhostScript via Ghost4J on Linux
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- Update Lept4J to 1.2.2 (Leptonica 1.73)
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- Recompile Tesseract 3.04.01 DLL against Leptonica 1.73
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- Update GhostScript Windows binary to 9.19
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Version 3.2.1 (29 May 2016)
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- Properly release Box and Boxa resources
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- Update Lept4J to 1.2.3
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Version 3.2.2 (16 February 2017)
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- Update GhostScript to 9.20
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- Fix possible NPE with PDF-related codes
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- Update dependencies
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- Additional image utility methods
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Version 3.3.0 (16 February 2017)
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- Upgrade to Tesseract 3.05 (2ca5d0a)
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- Update Lept4J to 1.3.0 (Leptonica 1.74.1)
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Version 3.3.1 (23 March 2017)
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- Update Lept4J to 1.3.1
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- Update other dependencies
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Version 3.4.0 (1 June 2017)
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- Upgrade to Tesseract 3.05.01 (2158661)
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- Update Lept4J to 1.4.0
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- Add support for jboss-vfs protocol
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Version 3.4.1 (22 September 2017)
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- Not extract/copy native resource if it exists and has same file size
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- Update Tesseract 3.05.01 (e2e79c4); link against Leptonica 1.74.4
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- Update Lept4J to 1.6.1
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Version 3.4.2 (14 November 2017)
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- Update Lept4J to 1.6.2
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- Update GhostScript to 9.22
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- Improve handling of PDF files in multi-threaded environment
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- Lift limits on number of pages in PDF
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- Use TESSDATA_PREFIX environment variable by default, if defined
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Version 3.4.3 (14 January 2018)
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- Not extract/copy resource if it exists and has same file size
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Version 3.4.4 (22 February 2018)
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- Exclude logback.xml from JAR
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- Add image rotate and deskew methods
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- Update Lept4J to 1.6.3
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Version 3.4.5 (21 March 2018)
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- Remove GS DLL due to license incompatibility
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- Use PDFBox
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Version 3.4.6 (25 March 2018)
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- Update PDFBox dependencies
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Version 3.4.7 (16 April 2018)
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- Update jai-imageio-core to 1.4.0 for Java 9 fixes
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Version 3.4.8 (2 May 2018)
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- Fix a path issue when extracting resources from JAR to temp directory on Windows server
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