Package: perlmagick
Version: 7:6.2.4.5.dfsg1-2
Severity: normal
Hi,
Image::Magick (and probably ImageMagick proper) seems rather broken when
working in non-RGB colorspaces. Witness for instance the following
script:
use Image::Magick;
my $m = Image::Magick->new(size=>"200x200");
$m->Read("xc:green");
$m->Set(colorspace=>'YCbCr');
$m->Draw(primitive=>"rectangle", fill=>"white", points=>"0,0 100,100");
$m->Write("test.jpeg");
The resulting background is correctly enough green (showing that the
colorspace conversion worked), but the square is pink. This is because
#ffffff in YCbCr is, of course, pink, not white.
I can work around this to some degree, by giving explicit hex codes
to Draw() instead of color names. However, I cannot find a reasonable
way of drawing FreeType text, since drawing black text on a white
background yields ugly green fringes where there should have been grey
pixels (ie. the antialiasing doesn't understand YCbCr either).
-- System Information:
Debian Release: lenny/sid
APT prefers testing
APT policy: (800, 'testing'), (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.23 (SMP w/2 CPU cores)
Locale: LANG=en_DK.UTF-8, LC_CTYPE=en_DK.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages perlmagick depends on:
ii libbz2-1.0 1.0.4-2 high-quality block-sorting file co
ii libc6 2.7-6 GNU C Library: Shared libraries
ii libfreetype6 2.3.5-1+b1 FreeType 2 font engine, shared lib
ii libice6 2:1.0.4-1 X11 Inter-Client Exchange library
ii libjpeg62 6b-14 The Independent JPEG Group's JPEG
ii liblcms1 1.16-8 Color management library
ii libmagick9 7:6.2.4.5.dfsg1-2 Image manipulation library
ii libpng12-0 1.2.15~beta5-3 PNG library - runtime
ii libsm6 2:1.0.3-1+b1 X11 Session Management library
ii libtiff4 3.8.2-7 Tag Image File Format (TIFF) libra
ii libx11-6 2:1.0.3-7 X11 client-side library
ii libxext6 1:1.0.3-2 X11 miscellaneous extension librar
ii libxml2 2.6.30.dfsg-3.1 GNOME XML library
ii perl 5.8.8-12 Larry Wall's Practical Extraction
ii perl-base [perlapi-5.8 5.8.8-12 The Pathologically Eclectic Rubbis
ii zlib1g 1:1.2.3.3.dfsg-8 compression library - runtime
perlmagick recommends no packages.
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