ImageMagick Studio LLC announces the release of ImageMagick 6.6.4-7

--===============1424440109==

ImageMagick Studio LLC announces the release of ImageMagick 6.6.4-7. This
release focuses on bug fixes, performance improvements, improved quality
of image distortions, and improve support of the PSD image format.  To download
ImageMagick, go to http://www.imagemagick.org.

ImageMagick® is a software suite to create, edit, and compose bitmap images.
It can read, convert and write images in a variety of formats (over 100)
including DPX, EXR, GIF, JPEG, JPEG-2000, PDF, PhotoCD, PNG, Postscript, SVG,
and TIFF. Use ImageMagick to translate, flip, mirror, rotate, scale, shear and
transform images, adjust image colors, apply various special effects, or draw
text, lines, polygons, ellipses and Bézier curves.

The functionality of ImageMagick is typically utilized from the command line
or you can use the features from programs written in your favorite programming
language. Choose from these interfaces: G2F (Ada), MagickCore (C), MagickWand
(C), ChMagick (Ch), ImageMagickObject (COM+), Magick++ (C++), JMagick (Java),
L-Magick (Lisp), NMagick (Neko/haXe), MagickNet (.NET), PascalMagick (Pascal),
PerlMagick (Perl), MagickWand for PHP (PHP), IMagick (PHP), PythonMagick
(Python), RMagick (Ruby), or TclMagick (Tcl/TK). With a language interface,
use ImageMagick to modify or create images dynamically and automagically.

ImageMagick is free software delivered as a ready-to-run binary distribution
or as source code that you may freely use, copy, modify, and distribute in
both open and proprietary applications. It is distributed under an Apache
2.0-style license, approved by the OSI and recommended for use by the OSSCC.

The ImageMagick development process ensures a stable API and ABI. Before each
ImageMagick release, we perform a comprehensive security assessment that
includes memory and thread error detection to prevent security
vulnerabilities.

Features and Capabilities

Here are just a few examples of what ImageMagick can do:

    * Format conversion: convert an image from one format to another (e.g. PNG
      to JPEG).
    * Transform: resize, rotate, crop, flip or trim an image.
    * Transparency: render portions of an image invisible.
    * Draw: add shapes or text to an image.
    * Decorate: add a border or frame to an image.
    * Special effects: blur, sharpen, threshold, or tint an image.
    * Animation: create a GIF animation sequence from a group of images.
    * Text & comments: insert descriptive or artistic text in an image.
    * Image identification: describe the format and attributes of an image.
    * Composite: overlap one image over another.
    * Montage: juxtapose image thumbnails on an image canvas.
    * Generalized pixel distortion: correct for, or induce image distortions
      including perspective.
    * Morphology of shapes: extract features, describe shapes and recognize
      patterns in images.
    * Motion picture support: read and write the common image formats used in
      digital film work.
    * Image calculator: apply a mathematical expression to an image or image
      channels.
    * Discrete Fourier transform: implements the forward and inverse DFT.
    * High dynamic-range images: accurately represent the wide range of
      intensity levels found in real scenes ranging from the brightest direct
      sunlight to the deepest darkest shadows.
    * Encipher or decipher an image: convert ordinary images into
    * unintelligible gibberish and back again.
    * Virtual pixel support: convenient access to pixels outside the image
      region.
    * Large image support: read, process, or write mega-, giga-, or tera-pixel
      image sizes.
    * Threads of execution support: ImageMagick is thread safe and most
      internal algorithms are OpenMP-enabled to take advantage of speed-ups
      offered by multicore processor chips.
    * Heterogeneous distributed processing: certain algorithms are
      OpenCL-enabled to take advantage of speed-ups offered by executing in
      concert across heterogeneous platforms consisting of CPUs, GPUs, and
      other processors.
    * ImageMagick on the iPhone: convert, edit, or compose images on your
      iPhone.

Examples of ImageMagick Usage, http://www.imagemagick.org/Usage/,
shows how to use ImageMagick from the command-line to accomplish any
of these tasks and much more. Also, see Fred's ImageMagick Scripts,
http://www.fmwconcepts.com/imagemagick/, a plethora of command-line scripts
that perform geometric transforms, blurs, sharpens, edging, noise removal,
and color manipulations.

Significant changes since the last official ImageMagick release, include:

2010-09-27  6.6.4-8 Nicolas Robidoux <nicolas.robidoux@gmail...>
  * Simplified the ClampUpAxes code, the use of its outputs, its
    comments, and credited Craig DeForest for the "clamp singular values"
    idea.
  * No reason to have "insane" precision Sinc in resize.c: Use
    the 1.2e-12 max. abs. relative error version for Q64 as well as Q32.

2010-09-27  6.6.4-8 Anthony Thyssen <A.Thyssen@griffith...>
  * Replace the blurry "High Quality EWA" technique with a 'Clamped EWA'
    for Distort Resampling.  This makes -distort a whole lot nicer
    and allows for the use of better cylindrical filters.

2010-09-26  6.6.4-7 Anthony Thyssen <A.Thyssen@griffith...>
  * Fix Point filter for ResizeImage() caused by support limiting the
    Box weighting function.

2010-09-26  6.6.4-6 Cristy  <quetzlzacatenango@image...>
  * Don't allow resize filter weights to go to zero (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=17132).

2010-09-24  6.6.4-6 Nicolas Robidoux <nicolas.robidoux@gmail...>
  * Now that MagickPIL is a MagickRealType, some casts are unneeded.

2010-09-21  6.6.4-6 Cristy  <quetzlzacatenango@image...>
  * Do not break words if caption size is absolute (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=1&t=17123).
  * Don't define HAVE_THREADS for --without-threads configure script option.

2010-09-20  6.6.4-5 Nicolas Robidoux <nicolas.robidoux@gmail...>
  * Modified "magick/resize.c" so that MagickPIL is a MagickRealType number.
    Some computations were needlessly done in long double precision because
    PIL forced an automatic upcast wherever it appeared. Changed its name to
    MagickREALTYPEPI. <- This was later reverted back to MagickPIL.
  * Modified "magick/resize.c" so that Bohman uses one trig call + one sqrt
    call instead of two trig calls.

2010-09-20  6.6.4-5 Anthony Thyssen <A.Thyssen@griffith...>
  * modified "magick/resample.c" to allow use of either EWA or HQEWA (default)
  * Removed LanczosFast from supported filters (SincFast*SincFast is faster)

2010-09-19  6.6.4-5 Cristy  <quetzlzacatenango@image...>
  * If IPTC profile is not embedded in an 8bim resource, declare it IPTC
    rather than 8BIM.
  * Support %[version] and %[copyright].
  * Improve performance of the pixel cache.

2010-09-18  6.6.4-4 Cristy  <quetzlzacatenango@image...>
  * Automatically set the quantum depth to 16 for HDRI.

2010-09-16  6.6.4-2 Cristy  <quetzlzacatenango@image...>
  * IPTC profile not always wrapped properly inside an 8BIM profile.
  * TIFF tile geometry must be divisible by 16.

2010-09-15  6.6.4-2 Anthony Thyssen <A.Thyssen@griffith...>
  * Rename of SincPolynomial to SincFast for easier user understanding
  * Ditto for LanczosChebyshev to LanzcosFast

2010-09-14  6.6.4-2 Anthony Thyssen <A.Thyssen@griffith...>
  * Switch default resize filters to using the faster SincPolynomial
    filter by default internally.  However 'Sinc' will still use the
    Trigonometric function, and can be used to assign the trig version
    of Sinc() to filters using the filter expert options.
  * The default filter for 'distort' was found to be a very blurry inaccurate
    filter function.  It was removed and replaced with a correct Gaussian
    filter (as used by resize)
  * Added a switch so that "-interpolate filter" will force the use of
    a cylindrical filter for ALL pixels in distorted images.  That is you can
    use that switch to use a cylindrical filter even for images that are
    being enlarged by the distortion.  However EWA is still currently using
    a fixed 2.0 sampling radius.  This switch complements the use of "-filter
    point" which turns off EWA filters in favor of interpolation for all
    pixels in a distorted image.  BOTH switches should not be used together.
  * A bug in the support radius of the EWA resampling function was found,
    now that correctly defined resize filters are being used. Suddenly Normal
    Gaussian distortions are not so blurry, and tests with distortions of
    the 'Rings' image show extremely good and clear results, with only minimal
    blurring.  The filter 'blur' expert option can be used to adjust this
    further.

    The above represents a major improvement forward in the quality of the
    image distortion operator. But near-unity distortions (no scaling) are
    still overly blurry.

2010-09-13  6.6.4-2 Cristy  <quetzlzacatenango@image...>
  * Don't negate the geometry offset for the -extent option.

2010-09-09  6.6.4-1 Cristy  <quetzlzacatenango@image...>
  * The RGBO format is now listed as a supported format.

2010-09-07  6.6.4-1 Anthony Thyssen <A.Thyssen@griffith...>
  * Added the Nicolas Robidoux and Chantal Racette  Lanczos resize filter
    function as "LanczosChebyshev" as faster alternative to Lanczos.
  * Re-code Nicolas Robidoux and Chantal Racette Polynomial Approximation of
    the Sinc Trigonometric resize filter, as a proper filter to allow
    direct comparision and speed testing of the filter.
  * Expanded the "-set option:filter:verbose 1" output, so as to also include
    the actual functions and other values that were used to create the filter.

2010-09-02  6.6.4-0 el_supremo  <digipete@shaw...>
  * Repair a few incorrect LocaleNCompare() calls (ttf.c, ps.c).

2010-08-31  6.6.4-0 Cristy  <quetzlzacatenango@image...>
  * Path no longer closed if join style is round (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=16943).
  * Add case for BGRQuantum to GetQuantumExtent().
  * Support no compression on PCX write.

2010-08-23  6.6.3-10 Cristy  <quetzlzacatenango@image...>
  * Fixed bug in the raw BGRA coders (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=16880).
  * Fix off-by-one error in the PSD coders.
  * Nicolas Robidoux with the assistance of Chantal Racette contribute an
    approximation of the sinc function over the interval [-3,3].
  * Eliminate a small memory leak in LevelizeImageChannel() (reference
	  http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=16951).
  * Recognize -fx logtwo (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=16958).

2010-08-15  6.6.3-7 Cristy  <quetzlzacatenango@image...>
  * Throw exception if image size differs for the compare program but the
    -subimage-search option is not specified.

2010-08-13  6.6.3-6 Cristy  <quetzlzacatenango@image...>
  * The AdobeRgb.tif TIFF image no longer faults under Windows (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=16838).
  * Add -subimage-search option to the compare utility.

2010-08-12  6.6.3-5 Cristy  <quetzlzacatenango@image...>
  * The -fx 2e+6/1e+5 argument no longer returns the wrong results (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=16833).

2010-08-10  6.6.3-5 Glenn Randers-Pehrson <glennrp@image...>
  * Emit a warning if the PNG encoder can't satisfy the color type and
    bit depth requested with a "-define" directive.

2010-08-07  6.6.3-4 Cristy  <quetzlzacatenango@image...>
  * The orient option sometimes improperly set "undefined" (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=16795).
  * Only list orientation options for the -list orientation option (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=16801).
  * Return proper standard deviation for combined channels (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=16786).
  * Handle transparency properly for the PSD image format.

2010-08-05  6.6.3-3 Glenn Randers-Pehrson <glennrp@image...>
  * Properly map PNG intent to image->rendering_intent

2010-08-01  6.6.3-3 Cristy  <quetzlzacatenango@image...>
  * Eliminate bogus "invalid colormap index" when pinging ICO images.
  * Support -set density / units.

2010-07-31  6.6.3-2 Cristy  <quetzlzacatenango@image...>
  * Only use the first alpha channel in PSD image.
  * Only use XPM complying colors for XPM images (e.g. green is rgb(0,255,0)).

2010-07-27  6.6.3-2 Glenn Randers-Pehrson <glennrp@image...>
  * Eliminate useless message about assuming zero delay when writing
    a single-frame MNG, and changed it from Error to Warning when
    writing a multiple-frame MNG.

2010-07-25  6.6.3-1 Glenn Randers-Pehrson <glennrp@image...>
  * Don't "ping" a PNG image if it is embedded in a MNG.  Otherwise the
    reader tries to read MNG chunks from the interior of the embedded PNG,
    resulting in an erroneous "corrupted image" message.

2010-07-09  6.6.3-1 Cristy  <quetzlzacatenango@image...>
  * Fix memory leak in for corrupt BMP images (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=16600).
  * Repair several issues when writing to stdout (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=16620).
  * A GIF image with the .bgr extension is still a GIF (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=16662).

2010-07-07  6.6.3-1 Glenn Randers-Pehrson <glennrp@image...>
  * The PNG decoder failed to handle the tRNS chunk properly for grayscale
    images where the png bit_depth was not the same as the quantum depth,
    and the transparent color was not black.

2010-07-01  6.6.3-0 Chris Madison  <madisonblu@gmail...>
  * Pinging the DJVU image format no longer faults.
  * Check for time-limit-exceeded in only one thread.
  * Reading filenames from a file (e.g. @filenames) no longer includes the
    utility name (side effect of StringToArgv() method).

2010-06-28  6.6.2-10 Cristy  <quetzlzacatenango@image...>
  * Support the tiff:fill-order define.
  * Filters are case sensitive (e.g. reduce-Colors).
  * Restore mogrify's -path option.
  * The -list module option lists image coders and image filters.

2010-06-27  6.6.2-9 Cristy  <quetzlzacatenango@image...>
  * Add the ImageView API.
  * Fix DJVU coder to read one page (e.g. 'image.djvu[2]').
  * Support -define png:bit-depth=1 -define png:color-type=3 for PNG format.

2010-06-22  6.6.2-8 Cristy  <quetzlzacatenango@image...>
  * Skip byte when DDS bitcount is 32 (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=16487).
  * Montage now uses final background setting (e.g. montage -background none ...
    -background lightblue show:).
  * Do not annotate directory paths in ListFiles().
  * Reset the image matte for png:color-type=2.

2010-06-17  6.6.2-7 Cristy  <quetzlzacatenango@image...>
  * Support new label:pointsize property.
  * Miscellany->Slide Show, in the display program, now cycles through the
    image sequence.
  * Recognize certain hex color values (e.g. #b9e1cc00) for the -fx argument.
  * Reduce memory requirements when dithering on the iPhone.
  * Command line operators no longer affected by settings that appear after
    them (e.g. -splice 10x0+0+0 -gravity center).
  * Compute the proper DPX user data field size.

2010-06-15  6.6.2-6 Cristy  <quetzlzacatenango@image...>
  * Fix some nits to keep the clang compiler happy.

2010-06-14  6.6.2-5 Anthony Thyssen <A.Thyssen@griffith...>
  * Fix transprancy handling for Morphology Convolve
  * Adjustments of Hit And Miss and Edge Detection kernel definitions
  * Added 'ThinDiagonals' Thinning Kernel + two sub-types
  * Handling for Convolution of 1-D vertical kernels.
    However this was removed (using #if-#endif) as I found it slower in tests!

2010-06-12  6.6.2-5 Cristy  <quetzlzacatenango@image...>
  * mogrify -format properly handles compressed image filename (e.g.
    -format jpg logo.png.bz2).
  * Respect +dither option when saving to the GIF image format.

2010-06-08  6.6.2-4 Cristy  <quetzlzacatenango@image...>
  * End of string sentinal is \n not \r.

2010-06-06  6.6.2-3 Glenn Randers-Pehrson <glennrp@image...>
  * Don't decode pixels in coders/png.c when image->ping is set.

2010-06-06  6.6.2-3 Cristy  <quetzlzacatenango@image...>
  * Reset image filename when reading inline images.
  * Don't clamp floating point values for HDRI-enabled ImageMagick.

2010-05-25  6.6.2-2 Anthony Thyssen <A.Thyssen@griffith...>
  * Replaced '^' morphology kernel rotation with two variants '>' and '<'
  * 'Skeleton' variant to thin down images as symmetrically as possible.
  * Spelling correction:  Manhatten -> Manhattan

2010-06-01  6.6.2-2 Glenn Randers-Pehrson <glennrp@image...>
  * Properly scale color components of the PNG bKGD chunk.
  * Prevent MNG divide by zero in calculation of frame_timeout.  Set
    both frame_delay and frame_timeout to infinite when ticks_per_second
    is zero, as required by the MNG spec.

2010-05-31  6.6.2-2 Cristy  <quetzlzacatenango@image...>
  * Add x:silent option to prevent beeps when reading the X image format.
  * Recognize TTF for GetMagicInfo().
  * Ensure the +set option deletes the image artifact.

2010-05-28  6.6.2-1 Glenn Randers-Pehrson <glennrp@image...>
  * Prevent coders/png.c from attempting to write an empty tRNS chunk.

2010-05-25  6.6.2-1 Anthony Thyssen <A.Thyssen@griffith...>
  * Fix for Square Array Rotates (off center origin rotate)
  * Added HitAndMiss kernel Ridges2 to find 2 pixel thick ridges
  * Added FreiChen:0,{angle}  FreiChen:{angle} and FreiChen:-1 variations
    to complete this kernels definition

2010-05-24  6.6.2-1 Cristy  <quetzlzacatenango@image...>
  * Respect density when rendering SVG images.
  * Set AVI handler to the MPEG coder.
  * Compute the proper DPX user data field size.
  * Do not interpret a format specifier when enclosed in brackets (e.g.
    rose_tile_%[filename:tile].gif.
  * Use 64-bit types when compiling with the 64-bit Visual C++ compiler under
    Windows.
  * Prevent MNG divide by zero in calculation of frame_delay (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=16320).

2010-05-23  6.6.2-0 Anthony Thyssen <A.Thyssen@griffith...>
  * Third Re-write of MorphologyApply() to better handle compound methods.
  * Implemented  -set option:morphology:compose for merging results of
    multiple kernels. "None" means re-iterate results with next kernel.
    While "Undefined" means to use the internal default for a method.
    Thinning, Thickening, HitAndMiss, Convolve, Correlate defaults to "None"
    while HitAndMiss defaults to "Lighten" (union of all kernel results).
    Other morphology methods defaults still to be decided.
  * Added HitAndMiss Kernel: Ridges  (find ridges and pixel width lines)
  * Rotation Expansion of single kernels '^' and '@' flags in arguments
    EG: -set option:showkernel 1 -morphology Convolve 'Blur:0x2^'
  * ExpandKernelInfo() (rotation expand) now groks symmetrical kernels.
    So the above will only produce a list of 2 kernels, not 4 kernels

2010-05-18  6.6.2-0 Anthony Thyssen <A.Thyssen@griffith...>
  * Separation of internal function MorphologyApply() from
    MorphologyImageChannel() to calls to convolve without user settings.
  * Rewrite of MorphologyApply() to output better 'verbose' messages
  * Better handling of Gaussian tyle filters (bug fixes)
  * Bug fix and optimization of kernel size calculations in "gem.c"
  * Allow '^' or '@' flags in 'user defined' kernel size arguments to
    expand kernel into a rotated list.
    EG: -set option:showkernel 1 -morphology Thinning  '3@: 0,1,0 0,1,0 0,0,0'
  * Allow a scaled unity kernel to be added to kernel (EdgeDet->Sharpen)
    EG: -set option:convolve:scale [kernel_scale][^!],[unity_scale][%]
  * Addition of "Laplacian of Gaussian" (LOG), also known as Mexican Hat
    EG: -morphology convolve LOG:0x1
  * Added FreiChen, Kirsch  Convolution kernels
  * Added Descrete 'Laplacian of Gaussian' kernels (Laplacian type 15 and 19)
  * Added Edges HitAndMiss Kernel

2010-05-17  6.6.2-0 Cristy  <quetzlzacatenango@image...>
  * PSD images require a proper layer to support an alpha channel.
  * Enable PFM endian support.
  * Add context to -border for montage.  Inside the parenthesis it adds a border
    to the image otherwise it sets the border for the layout manager.
  * 24-bit BMP images are not colormapped even if header colors != 0.
  * Set DPX user data like this: -set profile dpx:userdata.txt.
  * Make sure Lab => RGB => Lab survives the round trip.

2010-05-15  6.6.1-10 Cristy  <quetzlzacatenango@image...>
  * Use ScaleCharToQuantum() in coders/src.c (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=16229).
  * Don't clamp HDRI EXR pixels.

2010-05-14  6.6.1-9 Cristy  <quetzlzacatenango@image...>
  * Increase the estimated # points for the path drawing primitive.
  * Remove any prior resolution block from PSD before writing the new block.

2010-05-14  6.6.1-9 Anthony Thyssen <A.Thyssen@griffith...>
  * Addition of more Morphological/Convolution Kernels.
    DOG (Difference of Gaussians) and DOB (Difference of Blurs),
    EG:    -morphology convolve DOG:0x1,3
           -morphology convolve DOB:0x1,3,90
  * Added Prewitt, Roberts, Compass  Convolution Kernels
  * Ring Symbol Kernel (subtraction of Disk from a Disk)

2010-05-13  6.6.1-9 Cristy  <quetzlzacatenango@image...>
  * The pixel buffer was underallocated for some image formats when streaming.

2010-05-12  6.6.1-8 Anthony Thyssen <A.Thyssen@griffith...>
  * Implementation of Pattern Matching Morphology methods
    HitAndMiss, Thicken, Thinning
  * Reporting of Kernel Strings that fail to parse (though not why)
  * Parsing of Multiple Kernel Strings, generating a list of kernels
  * Union of results from Multiple Kernels for HitAndMiss method
  * Interated Multiple Kernels for all other morphology methods
  * Added many new kernels for HitAndMiss and Convolution
    Sobel, Laplacian, Cross, Peaks, Corners, LineEnds, LineJunctions,
    ConvexHull (for Thicken), Skeleton (for Thinning)

2010-05-08  6.6.1-8 Glenn Randers-Pehrson <glennrp@image...>
  * Use proper background.index when writing indexed PNG, if the background
    color is in the palette.

2010-05-08  6.6.1-7 Cristy  <quetzlzacatenango@image...>
  * Fix improper 'invalid colormap index' PNG bug.
  * Fix PerlMagick compile exception.

2010-05-07  6.6.1-6 Anthony Thyssen <A.Thyssen@griffith...>
  * Added % and ! modification flags to morphology distance kernel
    scaling factor, for easier usage.
  * Bug fix for compose math channel handling and morphology diff usage

2010-05-06  6.6.1-6 Cristy  <quetzlzacatenango@image...>
  * Do not claim gray colorspace if gray image includes a non-gray pixel.
  * Initialize BMP alpha channel to opaque for RGB images.
  * Fixed under allocation for round rectangles.
  * The -list option returns a 0 status as expected.

2010-05-06  6.6.1-6 Anthony Thyssen <A.Thyssen@griffith...>
  * Made use of new no-'sync' channel enabled mathematical compose methods
    for the difference morphology methods.  These should now work correctly
    for specific channels, and more importantly for alpha shaped morphology.

2010-05-05  6.6.1-6 Glenn Randers-Pehrson <glennrp@image...>
  * Fixed bugs with losing the opacity channel while writing some PNG images.
    (bug reported by Anthony T.)

2010-05-05  6.6.1-6 Glenn Randers-Pehrson <glennrp@image...>
  * Simplified and corrected rowbytes calculation in coders/png.c and
    added more logging.

2010-05-05  6.6.1-6 Anthony Thyssen <A.Thyssen@griffith...>
  * Rename of "Add" and "Subtract" compositions to "ModulusAdd" and
    "ModulusSubtract" for more clarity of there functions. Old names
    will continue to work as expected.
  * Fix "Minus", "ModulusAdd", and "ModulusSubtract" to follow
    normal SVG 'Over' blending specifications, (see next for override)
    Note that this does NOT include the "Plus" composition method which has
    SVG definition for it to use a 'Plus' blending rather than 'Over' blending.

  * By default mathematical compositions work as per SVG definition. That is
    the results are synchronized with 'Over' alpha-blending (except "Plus"
    which uses 'plus' alpha-blending).

    By removing the default 'sync' flag from the -channel setting however
    Break this inter-channel synchronization and do the mathematical operations
    only on the individual channels as specified by the -channel setting.
    That is do 'channel' math rather than 'SVG' composition.

    With this change you can then use mathematical composition methods on
    individual channels or even with the alpha channel of images.

2010-04-28  6.6.1-6 Anthony Thyssen <A.Thyssen@griffith...>
  * Special case handling in Barrel distortion (pixel at image center)
  * Calculation of image for Barrel distortion (pixel vs image coords)
  * Argument input (handling optional 'd' argument) for Barrel distortion

2010-04-24  6.6.1-6 Cristy  <quetzlzacatenango@image...>
  * Do not declare timestruct under MinGW.
  * Respect -compose option for the montage utility (bug report by Anthony).
  * A 256 column gradient produces a 256 color GIF image (bug report by
    Anthony).
  * Register / unregister CALS format in static.c (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=2&t=16103).
  * Add SetImageColor() method.

2010-04-17  6.6.1-5 Cristy  <quetzlzacatenango@image...>
  * Only write one ICC profile to PSD image.
  * Sync image colormap for PNG tRNS chunks.
  * The -direction option now works with the -annotate and -draw options.
  * For the histogram: format, if you have no need for the unique color list,
    use <kbd>-define histogram:unique-colors=false</kbd> to forego this
    expensive operation.
  * Match on literal after backslash in glob expression (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=16068).
  * Enable JPEG-compression for grayscale TIFF images (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=16064).
  * Don't write empty tile if tile geometry matches the image width (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=16064).
  * Support -regard-warnings in the mogrify utility.
  * Output the correct units for the identify utility (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=16075).

2010-04-15  6.6.1-4 Cristy  <quetzlzacatenango@image...>
  * Do not set the resample virtual pixel method when undefined.
  * Support writing grayscale PSD images.
  * Revert Lab-to-XYZ colorspace transform patch.
  * Clamp HDRI values for LevelImageChannel() method.

2010-04-12  6.6.1-3 Cristy  <quetzlzacatenango@image...>
  * For HSL to RGB, if color temperature is less than 0, set RGB to lightness.
  * Do not flip BMP image with negative height when pinging.

2010-04-08  6.6.1-2 Cristy  <quetzlzacatenango@image...>
  * Improve support for device link profiles.

2010-04-06  6.6.1-1 Anthony Thyssen <A.Thyssen@griffith...>
  * Fixed bug in -auto-level for special case when only one value is present
    in some channel of the image. In this case no 'stretch is performed, just
    as -normalize does.

2010-04-05  6.6.1-1 Cristy  <quetzlzacatenango@image...>
  * WMF support under Windows does not produce the same results as under
    Linux.

2010-03-31  6.6.1-0 Anthony Thyssen <A.Thyssen@griffith...>
  * Fixed bug in equal-size tile cropping, when image has a page offset.

2010-03-31  6.6.1-0 Cristy  <quetzlzacatenango@image...>
  * The -recolor 4x4 matrix is now interpreted properly (previously it
    summed rather than attenuating the alpha channel).
  * Support writing 1-bit PSD images.
  * Support LCMS 2.0.
  * Improved WMF support under Windows.

2010-03-30  6.6.1-0 Glenn Randers-Pehrson <glennrp@image...>
  * The new coders/png.c was failing to read a 1-bit paletted image properly.
  * Finished eliminating the deprecated direct references to members of
    the png_info structure. ImageMagick can now be built with libpng-1.5.

2010-03-21  6.6.0-10 Cristy  <quetzlzacatenango@image...>
  * Respect the -density option when rendering a Postscript or PDF image.
  * Distort barrel no longer complains when 3 arguments are given (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=15883).
  * Support -direction left-to-right option for rendering text

2010-03-24  6.6.0-9 Glenn Randers-Pehrson <glennrp@image...>
  * coders/png.c: Eliminated support of libpng versions older than 1.0.12.
  * Relocated the new, misplaced png_get_rowbytes() call.
  * Updated setjmp/longjmp/jmpbuf usage to work with libpng-1.5.

2010-03-21  6.6.0-9 Cristy  <quetzlzacatenango@image...>
  * Windows does not support complex.h (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=1&t=15808).
  * Add support for monochrome PSD images.
  * VignetteImage() no longer crashes when x and y arguments are both greater
    than half the width (x) and height (y) of the image.

2010-03-20  6.6.0-8 Glenn Randers-Pehrson <glennrp@image...>
  * Eliminated some of the deprecated direct references to members of
    the png_info structure.  This must be finished before we can build
    with libpng-1.5.

2010-03-18  6.6.0-8 Cristy  <quetzlzacatenango@image...>
  * The animate program no longer loops twice when -loop 1 is specified.
  * The caption format would sometimes hang when the text was not UTF-8.
  * Don't gamma correct log to linear color conversion unless the -gamma is
    specified (reference 
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=1&t=15799).

2010-03-17  6.6.0-7 Cristy  <quetzlzacatenango@image...>
  * Detect CMYKProcessColor AI tag.
  * Delete image from command line cache for -write option.

2010-03-13  6.6.0-6 Cristy  <quetzlzacatenango@image...>
  * Add support for the Adobe Large Document format.
  * Recognize -remap option for the mogrify utility.
  * The default Helvetica font is not always available, check for
    Century Schoolbook too (reference
    http://www.imagemagick.org/discourse-server/viewtopic.php?f=2&t=15780).

2010-03-11  6.6.0-5 Cristy  <quetzlzacatenango@image...>
  * Permit user to get virtual pixels with a region width of 0.
  * Reformulate the jinc() function so that the main peak is of amplitude of 1.
  * Resampling filter must respect the image virtual pixel method.

2010-03-07  6.6.0-4 Cristy  <quetzlzacatenango@image...>
  * The -evaluate-sequence option behaves like -evaluate except it operates
    on a sequence of images.

2010-03-05  6.6.0-2 Cristy  <quetzlzacatenango@image...>
  * Add support for the -maximum and -minimum options.


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