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Changes for libdmtx
----------------------------------------------------------------- version 0.5.2 [September 2008] Move SetRangeLimit and SetScanRegion into library Replace DMTXUTIL_SUCCESS/ERROR with DMTX_SUCCESS/FAILURE Add edge threshold filtering Add encoding support for 144x144 barcodes Fixed encoding case when message starts with two digits Fixed bug in range limit option Add dynamic image shrinking (pixel skipping) Add step-by-step diagnostic image dump (debug build) Fixed bug in minimum scan gap setting Removed y-flip from internal pixel storage Added strict border tests to eliminate false positives Added squareness deviation filter Implement simplified Hough transform for locating first edge Several behind-the-scenes performance enhancements Python wrapper update; 15x faster (thanks Jonathan!) New PHP wrapper code added Various improvements when building for OS X and FreeBSD version 0.5.1 [July 2008] Fixed Extended ASCII encoding bug Fixed error correction bug related to multiple interleaved blocks Added timeout condition for region detection Allow partial and complete disabling of error correction Replaced DmtxPixel struct with DmtxRgb for safe pixel copies Tighter integration with libfec Conditional build logic for libtiff Added placeholder for new utility, dmtxquery Added unit test program for testing libdmtx internals Include local copies of getopt1.c, getopt.c, and getopt.h Various things to help compiling in MS VC++ Lots of holes filled in comments (Doxygen) Fixed experimental Data Mosaic decoding New Cocoa/iPhone wrapper (thanks Stefan!) version 0.5 [April 2008] Error correction using libfec (thanks Florian!) Rework encoding and decoding API for consistency and intuitiveness Handle region detection and region decoding as separate tasks Pass found regions back to calling app before attempting decode Image mask approach (for performance and multi-barcode scans) Fix TestForEndOfSymbolEdifact() to handle special cases correctly Roll scan pattern into core library (inward breadth-first cross) Replace dmtxScanLine() with dmtxScanPixel() Implement 4-direction weighted module decisions (eliminates thresholds) Add ability to scan portion of image Add --diagnose option that dumps image with embedded scan infomation Added Z rotation angle (in degrees) to verbose output Move ASCII and codeword output to separate --preview option Added -R option for setting image print resolution in dpi (PNG only) Remove gltest and simpletest from default build target Update Subversion to be keyword friendly ($Id$) Updated documentation to reflect API and option changes version 0.4 [December 2007] Remove arbitrary sz scaling (100.0) since it doesn't matter anyway Fix 4 bottom-right modules in sizes where they are not used (thanks Matthias R.!) Replace callback references with preprocessor macros Implement remaining encodation schemes for encoding (X12, Base 256, etc...) Implement remaining encodation schemes for decoding (X12, Base 256, etc...) Implement --auto-best option for best possible encoding efficiency Implement multi-region symbols Read and write rectangle barcodes Use GNU autotools (autoconf, automake, libtool) New region detection overhaul Include initial version of Python bindings from pydmtx project (thanks Dan!) Add decoding functionality through Python Add marathon images to project (thanks john@sportcam.net!) Fix dmtxread crash when same barcode is found more than 16 times Verbose messages describing traits of detected barcodes --codewords option to print codewords instead of decoded message --newline option to insert newline character at end of output Additional output formats (PNG, ASCII, codewords) 'make test' executes regression tests for encodation version 0.3 [October 2006] Several high-level changes: build process, naming consistency, file layout Added new automatic style checks in script directory ("make style") Implemented remaining encodation schemes for decode (X12, Base 256, etc...) Fixed instability/regressions that were introduced in v0.2 release Color sampling now averaged from multiple pixel locations Size calibration accuracy improved with new approach dmtxread: increased default scanline count, added multi-page TIFF format dmtxwrite: bug fixes, implemented -o option Improved documentation: deps listed in INSTALL, new man page for dmtxwrite version 0.2 [June 2006] Cleaned up program structure surrounding decoding process Improved API for real-world use (no longer just dumping results to STDOUT) Added "dmtxread" command line utility Added "dmtxwrite" command line utility Implemented Reed-Solomon error detection Created "simpletest.c" for full circle processing test Now using libpng(3) in library to read Data Matrix images Improved documentation (somewhat) version 0.1 [April 2006] Initial release |