Announcing GraphicsMagick 1.3.6

GraphicsMagick 1.3.6 is now available.  Visit the GraphicsMagick web 
site at "http://www.graphicsmagick.org/".  GraphicsMagick may be 
downloaded from SourceForge at 
"http://sourceforge.net/projects/graphicsmagick/files/" or from the 
GraphicsMagick ftp site at 
"ftp://ftp.graphicsmagick.org/pub/GraphicsMagick/1.3".

This release fixes many bugs, adds many improvements, and adds new 
major features.  Quite a few volunteers contributed to this release.

The following are the major changes since the 1.3.5 release:

Security Fixes:

   * None.

Bug fixes:

   * Composition was failing when the change image overlaps off the
     left side of the canvas.

   * EPT, PDF, PS: PDF bounding box is sometimes incorrect or not
     globally applicable so don't specify bounding box when reading PDF
     files.

   * OpenMP: Fix (benign) multi-thread cross-contentions (detected by
     valgrind's Helgrind).

   * TIFF: Fix problem with reading one bit per sample RGB images.

   * TIFF: Writer was using rows-per-strip of 8 when writing
     JPEG-compressed TIFF.  This does not work for vertical
     subsampling, and some TIFF readers insist on 16.  The
     rows-per-strip is now required to be a multiple of 16.

   * TIFF: In some cases, the TIFF reader and writer were accessing
     planar TIFF in row-order rather than plane-order, which resulted
     in sever buffering problems in libtiff, and failure when
     compression was used.

   * -write now works usefully as documented.

   * Temporary file name generator was not random enough, resulting in
     some file name collisions for GraphicsMagick processes started at
     the same time.

   * PerlMagick: Fixed Ping on a BLOB.

   * GetImageDepth was leaking memory.

   * Convert/mogrify -mask option was leaking memory.

   * Mogrify -output-directory option was leaking memory.

   * DPX: Fixed memory leak encountered when subsampling to 4:2:2.

   * DPX: Values read received insuficient scaling, which round-tripped
     correctly, but rounded-down excessively if any image processing
     was applied.

New Features:

   * Added HRS reader for slow scan TV (contributed by Fojtik Jaroslav).

   * Pthreads (POSIX threads) API may now be used under the WIN32 API.

   * New access confirmation facility (MagickConfirmAccess) to allow
     the API user to monitor and/or block access to files and URLs.
     This allows the API user to implement a security policy based on
     actual accesses.

   * New color matrix function (ColorMatrixImage) to apply a color
     matrix similar to Adobe Flash Flash.filters.colorMatrixFilter(),
     and Windows GDI+ ColorMatrix class, (order up to 5x5) to the image
     pixels.  This is accessible via the -recolor command option.

   * Added an IDENTITY coder to return a Hald identity CLUT image of
     specified order (e.g. "identity:8").

   * Added a Hald CLUT capability as described at
     http://www.quelsolaar.com/technology/clut.html.  This allows a
     color transformation to be easily created and replicated on any
     number of images.  The algorithm is accessed by the -hald-clut
     option of 'convert' and 'mogrify'.  Original algorithm by Eskil
     Steenberg and adapted for GraphicsMagick by Cl?ment Follet, with
     additional work by Bob Friesenhahn.

   * Added support for the ASC CDL transform.  Available as -asc-cdl
     via the 'convert' and 'mogrify' subcommands.  Original
     implementation by Cl?ment Follet but considerably re-worked by Bob
     Friesenhahn.  Implementation passes the +/- 1 count accuracy
     requirement required by the ASC CDL SOP tests.

   * Added support for reading CALS Type 1 format (contributed by John
     Sergeant).  CALS is a standard raster format used by the US
     Department of Defense for storing blueprint images.

   * Added a random number generation system based on George
     Marsaglia's multiply-with-carry generator.  Somewhat slower than
     rand() but produces better random numbers with a period >2^60.
     This is a much better random number generator than the C library
     rand() and the algorithm is integrated in a way which maximizes
     multi-thread performance.

   * The 'compare' command now supports a -maximum-error option to
     specify the maximum image error so that it may be used to support
     boolean logic in automated test scripts.

   * For OpenMP-builds, the '-list resource' output now indicates the
     number of threads which will be used.

Feature improvements:

   * Image resize now avoids adding "halos" around objects when
     resizing an image which contains transparency (patch contributed by
     Pavel Merdin).

   * DICOM: The DICOM reader is completely re-written and is much more
     functional now.  A few features (e.g. RLE compression) are still
     missing.  This work is contributed by John Sergeant.

   * EXIF: Unprintable characters in EXIF attribute strings are now
     returned using three-digit octal notation.  Unknown tags are
     identified via their four-character hex value.

   * PCL: PCL writer is rewritten to fix many bugs, add support for
     compression, add support for 8 bit PseudoClass images, and
     dramatically improve usability (work contributed by John Sergeant).

   * TIFF: Allow the user to force the returned image to be TrueColor
     type for min-is-white and min-is-black TIFF files.

   * TIFF: User can now specify the predictor using syntax like
     '-define tiff:predictor=2'.

   * TIFF: User can now specify the rows-per-strip value when using
     JPEG compression.

   * TXT: The TXT reader is now capable of reading image files written
     by the TXT writer, as well continuing to render ASCII text into an
     image (work contributed by Fojtik Jaroslav).

   * Utilities @file.txt syntax for including a list of files to use as
     an argument now really works as expected.  This may be used to
     inject any other text into the command line as well.  As a result,
     the 'mogrify' utility may be invoked on thousands of files at once
     while obtaining the list of files to process from a text file.

   * The 'mogrify' utility now caches argument images so that they are
     loaded only once when mogrify is used to process multiple image
     files.

Performance Improvements:

   * -median and -noise now see reliable linear speedup as threads are
     added.

Behavior Changes:

   * PerlMagick is configured but no longer built by default.

   * Use '-interlace Line' to produce an interlaced GIF, PNG, or
     progressive JPEG.

Thanks,

Bob
--
Bob Friesenhahn
[email protected], http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/

------------------------------------------------------------------------------