mirror of
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update ChangeLog;
remove ReleaseNotes (a relevant information are in Changelog file and there is Release note wiki online)
This commit is contained in:
Zdenko Podobný
parent
2c675dcc77
commit
ddd3cad8c6
42
ChangeLog
42
ChangeLog
@ -1,4 +1,42 @@
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2014-02-04 v3.03
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2015-02-17 - V3.04.01
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* Added OSD renderer for psm 0. Works for single page and multi-page images.
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* Improve tesstrain.sh script.
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* Simplify build and run of ScrollView.
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* Improved PDF output for OS X Preview utility.
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* INCOMPATIBLE fix to hOCR line height information - commit 134ebc3.
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* Added option to build Tesseract without Cube OCR engine (-DNO_CUBE_BUILD).
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* Enable OpenMP support.
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* Many bug fixes.
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2015-07-11 - V3.04.00
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* Tesseract development is now done with Git and hosted at github.com (Previously we used Subversion as a VCS and code.google.com for hosting).
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* Tesseract now requires leptonica 1.71 or a higher version.
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* Removed official support for VS 2008.
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* Added support for 39 additional scripts/languages, including: amh, asm, aze_cyrl, bod, bos, ceb, cym, dzo, fas, gle, guj, hat, iku, jav, kat, kat_old, kaz, khm, kir, kur, lao, lat, mar, mya, nep, ori, pan, pus, san, sin, srp_latn, syr, tgk, tir, uig, urd, uzb, uzb_cyrl, yid
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* Major updates to training system as a result of extensive testing on 100 languages.
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* New training data for over 100 languages
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* Improved performance with PIC compilation option.
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* Significant change to invisible font system in pdf output to improve correctness and compatibility with external programs, particularly ghostscript.
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* Improved font identification.
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* Major change to improve layout analysis for heavily diacritic languages: Thai, Vietnamese, Kannada, Telugu etc.
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* Fixed problems with shifted baselines so recognition can recover from layout analysis errors.
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* Major refactor to improve speed on difficult images, especially when running a heap checker.
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* Moved params from global in page layout to tesseractclass.
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* Improved single column layout analysis.
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* Allow ocr output to multiple formats using tesseract command line executable.
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* Fixed issues with mixed eng+ara scripts.
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* Improved script consistency in numbers.
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* Major refactor of control.cpp to enable line recognition.
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* Added tesstrain.sh - a master training script.
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* Added ability to text2image training tool to just list available fonts.
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* Added ability to text2image to underline words.
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* Improved efficiency of image processing for PDF output.
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* Added parameter description for each parameter listed with 'print-parameters' command line option.
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* Added font info to hOCR output.
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* Enabled streaming input and output of multi-page documents.
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* Many bug fixes.
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2014-02-04 - V3.03(rc1)
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* Added new training tool text2image to generate box/tif file pairs from
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text and truetype fonts.
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* Added support for PDF output with searchable text.
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@ -16,7 +54,7 @@
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* Many bug fixes.
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* More training source data included.
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2012-02-01 - v3.02
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2012-02-01 - V3.02
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* Moved ResultIterator/PageIterator to ccmain.
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* Added Right-to-left/Bidi capability in the output iterators for Hebrew/Arabic.
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* Added paragraph detection in layout analysis/post OCR.
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@ -22,7 +22,7 @@ if !NO_CUBE_BUILD
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endif
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SUBDIRS += ccmain api . tessdata doc
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EXTRA_DIST = ReleaseNotes README.md\
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EXTRA_DIST = README.md\
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aclocal.m4 config configure.ac autogen.sh contrib \
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tesseract.pc.in $(TRAINING_SUBDIR) java doc testing
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323
ReleaseNotes
323
ReleaseNotes
@ -1,323 +0,0 @@
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= Tesseract release notes July 11 2015 - V3.04.01 =
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* Added OSD renderer for psm 0. Works for single page and multi-page images.
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* Improve tesstrain.sh script.
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* Simplify build and run of ScrollView.
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* Improved PDF output for OS X Preview utility.
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* INCOMPATIBLE fix to hOCR line height information - commit 134ebc3.
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* Added option to build Tesseract without Cube OCR engine (-DNO_CUBE_BUILD).
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* Enable OpenMP support.
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* Many bug fixes.
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= Tesseract release notes July 11 2015 - V3.04.00 =
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* Tesseract development is now done with Git and hosted at github.com (Previously we used Subversion as a VCS and code.google.com for hosting).
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* Tesseract now requires leptonica 1.71 or a higher version.
|
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* Removed official support for VS 2008.
|
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* Added support for 39 additional scripts/languages, including: amh, asm, aze_cyrl, bod, bos, ceb, cym, dzo, fas, gle, guj, hat, iku, jav, kat, kat_old, kaz, khm, kir, kur, lao, lat, mar, mya, nep, ori, pan, pus, san, sin, srp_latn, syr, tgk, tir, uig, urd, uzb, uzb_cyrl, yid
|
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* Major updates to training system as a result of extensive testing on 100 languages.
|
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* New training data for over 100 languages
|
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* Improved performance with PIC compilation option.
|
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* Significant change to invisible font system in pdf output to improve correctness and compatibility with external programs, particularly ghostscript.
|
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* Improved font identification.
|
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* Major change to improve layout analysis for heavily diacritic languages: Thai, Vietnamese, Kannada, Telugu etc.
|
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* Fixed problems with shifted baselines so recognition can recover from layout analysis errors.
|
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* Major refactor to improve speed on difficult images, especially when running a heap checker.
|
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* Moved params from global in page layout to tesseractclass.
|
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* Improved single column layout analysis.
|
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* Allow ocr output to multiple formats using tesseract command line executable.
|
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* Fixed issues with mixed eng+ara scripts.
|
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* Improved script consistency in numbers.
|
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* Major refactor of control.cpp to enable line recognition.
|
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* Added tesstrain.sh - a master training script.
|
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* Added ability to text2image training tool to just list available fonts.
|
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* Added ability to text2image to underline words.
|
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* Improved efficiency of image processing for PDF output.
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* Added parameter description for each parameter listed with 'print-parameters' command line option.
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* Added font info to hOCR output.
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* Enabled streaming input and output of multi-page documents.
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* Many bug fixes.
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= Tesseract release notes Feb 4 2014 - V3.03(rc1) =
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* Added OpenCL support (experimental).
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* Added new training tool text2image to generate box/tif file pairs from text and truetype fonts.
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* Added support for PDF output with searchable text.
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* Removed entire IMAGE class and all code in image directory.
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* Tesseract executable: support for output to stdout; limited support for one page images from stdin (especially on Windows)
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* Added Renderer to API to allow document-level processing and output of document formats, like hOCR, PDF.
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* Major refactor of word-level recognition, beam search, eliminating dead code.
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* Refactored classifier to make it easier to add new ones.
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* Generalized feature extractor to allow feature extraction from greyscale.
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* Improved sub/superscript treatment.
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* Improved baseline fit.
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* Added set_unicharset_properties to training tools.
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* Many bug fixes.
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* More training source data included.
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= Tesseract release notes Feb 01 2012 - V3.02 =
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* Added Right-to-left/Bidi capability in the output iterators for Hebrew/Arabic.
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* Added paragraph detection in layout analysis/post OCR.
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* Added simultaneous multi-language capability.
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* Added experimental equation detector.
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* Major improvements to layout analysis for better image detection, diacritic detection, better textline finding, better tabstop finding.
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* Improved line detection and removal.
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* Added fixed pitch chopper for CJK.
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* Added word bigram correction.
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* Added new uniform classifier API.
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* Added new training error counter.
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* More detailed changes recorded in ChangeLog.
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= Tesseract release notes Oct 21 2011 - V3.01 =
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* Thread-safety! Moved all critical globals and statics to members of the appropriate class. Tesseract is now thread-safe (multiple instances can be used in parallel in multiple threads.) with the minor exception that some control parameters are still global and affect all threads.
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* Added Cube, a new recognizer for Arabic. Cube can also be used in combination with normal Tesseract for other languages with an improvement in accuracy at the cost of (much) lower speed. *There is no training module for Cube yet.*
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* `OcrEngineMode` in `Init` replaces `AccuracyVSpeed` to control cube.
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* Greatly improved segmentation search with consequent accuracy and speed improvements, especially for Chinese.
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* Added `PageIterator` and `ResultIterator` as cleaner ways to get the full results out of Tesseract, that are not currently provided by any of the `TessBaseAPI::Get*` methods. All other methods, such as the `ETEXT_STRUCT` in particular are deprecated and will be deleted in the future.
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* ApplyBoxes totally rewritten to make training easier. It can now cope with touching/overlapping training characters, and a new boxfile format allows word boxes instead of character boxes, BUT to use that you have to have already boostrapped the language with character boxes. "Cyclic dependency" on traineddata.
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* Auto orientation and script detection added to page layout analysis.
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* Deleted *lots* of dead code.
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* Fixxht module replaced with scalable data-driven module.
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* Output font characteristics accuracy improved.
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* Removed the double conversion at each classification.
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* Upgraded oldest structs to be classes and deprecated PBLOB.
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* Removed non-deterministic baseline fit.
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* Added fixed length dawgs for Chinese.
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* Handling of vertical text improved.
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* Handling of leader dots improved.
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* Table detection greatly improved.
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* Fixed a couple of memory leaks.
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* Fixed font labels on output text. (Not perfect, but a lot better than before.)
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* Cleanup and more bug fixes
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* Special treatments for Hindi.
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* Support for build in VS2010 with Microsoft Windows SDK for Windows 7 (thanks to Michael Lutz)
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Tesseract release notes Sep 30 2010 - V3.00
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* Preparations for thread safety:
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* Changed TessBaseAPI methods to be non-static
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* Created a class hierarchy for the directories to hold instance data,
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and began moving code into the classes.
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* Moved thresholding code to a separate class.
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* Added major new page layout analysis module.
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* Added HOCR output.
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* Added Leptonica as main image I/O and handling. Currently optional,
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but in future releases linking with Leptonica will be mandatory.
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* Ambiguity table rewritten to allow definite replacements in place
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of fix_quotes.
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* Added TessdataManager to combine data files into a single file.
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* Some dead code deleted.
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* VC++6 no longer supported. It can't cope with the use of templates.
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* Many more languages added.
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* Doxygenation of most of the function header comments.
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Tesseract release notes June 30 2009 - V2.04
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Integrated patches for portability and to remove some of the
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"access" macros.
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Removed dependence on lua from the viewer making it a *lot*
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faster. Also the viewer now compiles and works (on Linux.)
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Fixed the following issues:
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1, 63, 67, 71, 76, 79, 81, 82, 84, 106, 108, 111, 112, 128, 129, 130, 133, 135,
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142, 143, 145, 146, 147, 153, 154, 160, 165, 169, 170, 175, 177, 187, 192,
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195, 199, 201, 205, 209.
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This is the last version to support VC++6!
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This may also be the last version to compile without leptonica!
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Windows version now outputs to stderr by default, fixing a lot of the problems with lack of visible meaningful error messages.
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Tesseract release notes April 22 2008 - V2.03
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2.02 was unrunnable, due to a last-minute "simple" change.
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2.03 fixes the problem and also adds an include check for leptonica
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to make it more usable.
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Tesseract release notes April 21 2008 - V2.02
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Improvements to clustering, training and classifier.
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Major internationalization improvements for large-character-set
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languages, eg Kannada.
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Removed some compiler warnings.
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Added multipage tiff support for training and running.
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Updated graphics output to talk to new java-based viewer.
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Added ability to save n-best lists.
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Added leptonica support for more file types.
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Improved Init/End to make them safe.
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Reduced memory use of dictionaries.
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Added some new APIs to TessBaseAPI.
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Fixed namespace collisions with jpeg library (INT32).
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Portability fixes for Windows for new code.
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Updates to autoconf system for new code.
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Tesseract release notes August 27 2007 - V2.01
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Fixed UTF8 input problems with box file reader.
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Fixed various infinite loops and crashes in dawg code.
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Removed include of config_auto.h from host.h.
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Added automatic wctype encoding to unicharset_extractor.
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Fixed dawg table too full error.
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Removed svn files from tarball.
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Added new functions to tessdll.
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Increased maximum utf8 string in a classification result to 8.
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Tesseract release notes July 17, 2007 - V2.00
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First release of the International version.
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This version recognizes the following languages:
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English - eng
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French - fra
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Italian - ita
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German - deu
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Spanish - spa
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Dutch - nld
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The language codes follow ISO 639-2. The default language is English.
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To recognize another language:
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tesseract inputimage outputbase -l langcode
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To train on a new language, see separate documentation.
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More languages will be appearing over time.
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List of changes in this release:
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Converted internal character handling to UTF8.
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Trained with 6 languages.
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Added unicharset_extractor, wordlist2dawg.
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Added boxfile creation mode.
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Added UNLV regression test capability.
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Fixed problems with copyright and registered symbols.
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Fixed extern "C" declarations problem.
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Made some improvements to consistency of accuracy across platforms.
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Added vc++ express support.
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Instructions for downloading and building version 2.00.
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Things have changed quite a bit since the previous versions so please read carefully.
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*All users*
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The tarballs are split into pieces.
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tesseract-2.00.tar.gz contains all the source code.
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tesseract-2.00.<lang>.tar.gt contains the data files for <lang>. You need at least one of these or tesseract will not work.
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tesseract-2.00.exe.tar.gz is not for the 'exe' language. It is windows executables. They are built with VC++ express and come with absolutely no warranty. If they work for you then great, otherwise get visual C++ express (and the platform sdk) and build from the source.
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*Non-windows users*
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As with 1.04, this version works with make install.
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*New* there is a tesseract.spec for making rpms. (Thanks to Andrew Ziem for the help.)
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It might work with your OS if you know how to do that sort of thing.
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If you are linking to the libraries, as with Ocropus, there is now a single master
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library called libtesseract_full.a.
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*Windows users*
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If you are building from the sources, there are still dsw and dsp files for vc++6 and also
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sln and vcproj files for vc++ express.
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The dll has been updated to allow input of non-binary images. (Thanks to Glen of Jetsoft.)
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Tesseract release notes May 15, 2007 - V1.04.
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=== Windows users only ===
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Added a dll interface for windows. Thanks to Glen at Jetsoft for contributing
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this. To use the dll, include tessdll.h, import tessdll.lib and put tessdll.dll
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somewhere where the system can find it. There is also a small dlltest program
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to test the dll. Run with:
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dlltest phototest.tif phototest.txt
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It will output the text from phototest.tif with bounding box information.
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**New for Windows** the distribution now includes tesseract.exe and tessdll.dll
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which *might* work out of the box! There are no guarantees as you need
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VC++6 versions of mfc and crt (at least) for it to work. (Batteries not
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included, and certainly no installshield.)
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== Important note for anyone building with make: i.e. anyone except devstudio
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users ==
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This release includes new standardization for the data directory. To enable
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Tesseract to find its data files, you must either:
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./configure
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make
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make install
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to move the data files to the standard place, or:
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export TESSDATA_PREFIX="directory in which your tessdata resides/"
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(or equivalent) in your .profile or whatever or setenv to set the environment
|
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variable. Note that the directory must end in a /
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HAVING tesseract and tessdata IN THE SAME DIRECTORY DOES NOT WORK ANY MORE.
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== All users ==
|
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Fixed a bunch of name collisions - mostly with stl.
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Made some preliminary changes for unicode compatibility. Includes a new data
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file (unicharset) and renaming of the other data files to eng.* to support
|
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different languages.
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There are also several other minor bug fixes and portability improvements
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for 64 bit, the latest visual studio compiler etc. Thanks to all who have
|
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contributed these fixes.
|
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|
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NOTE: This is likely to be the last English-only release!
|
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Apologies in advance to non-windows users for bloating the distribution with
|
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windows executables. This will probably get fixed in the next release with
|
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the multi-language capability, since that will also bloat the distribution.
|
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|
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|
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Tesseract release notes Feb 2, 2007 - V1.03.
|
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Added mftraining and cntraining. Using an image with a box file, tesseract
|
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generates .tr output files. cntraining runs on the .tr files to make
|
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normproto that lives in tessdata. mftraining runs on the .tr files to
|
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make inttemp and pffmtable in tessdata. These are the main data files
|
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that tesseract uses to recognize characters. At present, the code to make
|
||||
dictionary files is not yet available, nor are any sample box files or
|
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rebuilt inttemp or documentation to create any of these. Recognition is
|
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still limited to the ASCII set, but when this problem is fixed, documentation
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will follow.
|
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|
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Added a new API with adaptive thresholding for grey and color images.
|
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See ccmain/baseapi.h/cpp for details. The main program has been converted
|
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to use the API as an example. See main() in ccmain/tesseractmain.cpp for
|
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details. The API is designed to make it easy to add subclasses with ability
|
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to output the bounding boxes etc from the internal structures. The adaptive
|
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thresholding improves accuracy (most of the time) on non-binary images.
|
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|
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Many memory leaks have been fixed. There are no known leaks left from using
|
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the API correctly.
|
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|
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The adaptive classifier was not operating correctly. This bug, and several
|
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others have been fixed, including poor chopping, an indefinite (if not quite
|
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infinite) loop in the number parser, and a couple of crash bugs. Thanks to
|
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all that have contributed bugs and bug fixes.
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|
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It is now possible to build without any of the graphics support to save code
|
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size using #define GRAPHICS_DISABLED. There is also a new EMBEDDED define
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for use on operating systems with limited library support.
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64-bit and Mac OSX buildability is now included in the mainline source tree.
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Thanks to all that have contributed patches and comments to help with that.
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1.03 is also endian-independent, apart from the tiff i/o, so if you use
|
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libtiff, the code should run on all platforms, even if you get/create new
|
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data files of a different endinanness.
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|
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Some of the bug fixes improve accuracy, and so do some of the changes to
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DangAmbigs and user-words.
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Tesseract release notes, Oct 4 2006 - V1.02.
|
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Removed dependency on aspirin. *All* code is now licensed under Apache2.0.
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Tesseract release notes, Sep 7 2006 - V1.01.
|
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|
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Fixes for this release:
|
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Added mfcpch.cpp and getopt.cpp for VC++.
|
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Fixed problem with greyscale images and no libtiff.
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Stopped debug window from being used for the usage output.
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Fixed load of inttemp for big-endian architectures.
|
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Fixed some Mac compilation issues.
|
||||
|
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This version should read uncompressed 8 bit grey and 24 bit color tiffs
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without having to have libtiff. It does a dumb threshold though, so don't
|
||||
expect good results from poor contrast or images of natural scenes etc.
|
||||
|
||||
If you just run tesseract with no command line args you should now get a
|
||||
sensible usage message on linux, with or without X-windows.
|
||||
|
||||
If you can get it to compile on a PPC Mac, it may now run correctly,
|
||||
although not all the build issues are fixed yet.
|
||||
|
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Building Tesseract:
|
||||
Windows:
|
||||
Unpack the tar.gz archive
|
||||
Open tesseract.dsw in DevStudio (preferably version 6, higher versions will be more difficult)
|
||||
Set Win32 - Release as the active configuration.
|
||||
Build.
|
||||
Copy tesseract.exe from bin.rel up one directory level.
|
||||
Run tesseract phototest.tif phototest
|
||||
This will create phototest.txt.
|
||||
|
||||
Linux:
|
||||
Unpack the tar.gz archive
|
||||
./configure
|
||||
make
|
||||
Copy tesseract from ccmain up one directory level (or create a symbolic link)
|
||||
Run tesseract phototest.tif phototest
|
||||
This will create phototest.txt.
|
||||
Loading…
Reference in New Issue
Block a user