[Pkg-gmagick-im-team] Bug#712493: imagemagick: Imagemagick 6.7.7 changes contrast of b/w images without reason

[Bastien ROUCARIES]

could you try experimental version ?

beware that it break api/ABI.

Bastien

On Sun, Jun 16, 2013 at 3:15 PM, Markus Schmidt <debian at boomshop.net> wrote:
> Package: imagemagick
> Version: 8:6.7.7.10-5
> Severity: normal
>
> Dear Maintainer,
>
> convert changes the contrast (or curve or gamma) of the image significantly
> without any reason.
>
> Example command:
> convert test.png test2.png
>
> This one results in an image with less amount of grey, midtones are getting
> darker.
>
> Example original:
> http://mein-neues-blog.de/files/xplanetFX/imagemagick_bug_16_06_13/test.png
>
> Result after the above command:
> http://mein-neues-blog.de/files/xplanetFX/imagemagick_bug_16_06_13/test2.png
>
> Compiling e.g. imagemagick 6.7.9 doesn't help because it seems the bug is in
> the depending graphics libraries not in the imagemagick binary.
>
> Thanks a lot in advance for taking a look onto this issue.
>
>
>
> -- System Information:
> Debian Release: jessie/sid
>   APT prefers unstable
>   APT policy: (500, 'unstable')
> Architecture: i386 (i686)
>
> Kernel: Linux 3.9-1-686-pae (SMP w/2 CPU cores)
> Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
>
> Versions of packages imagemagick depends on:
> ii  hicolor-icon-theme  0.12-1
> ii  libbz2-1.0          1.0.6-4
> ii  libc6               2.17-5
> ii  libfontconfig1      2.9.0-7.1
> ii  libfreetype6        2.4.9-1.1
> ii  libglib2.0-0        2.36.3-1
> ii  libgomp1            4.8.1-2
> ii  libice6             2:1.0.8-2
> ii  libjpeg8            8d-1
> ii  liblcms2-2          2.2+git20110628-2.2
> ii  liblqr-1-0          0.4.1-2
> ii  libltdl7            2.4.2-1.2
> ii  liblzma5            5.1.1alpha+20120614-2
> ii  libmagickcore5      8:6.7.7.10-5
> ii  libmagickwand5      8:6.7.7.10-5
> ii  libsm6              2:1.2.1-2
> ii  libtiff4            3.9.6-11
> ii  libx11-6            2:1.5.0-1+deb7u1
> ii  libxext6            2:1.3.1-2+deb7u1
> ii  libxt6              1:1.1.3-1+deb7u1
> ii  zlib1g              1:1.2.8.dfsg-1
>
> Versions of packages imagemagick recommends:
> ii  ghostscript           9.05~dfsg-6.3
> ii  libmagickcore5-extra  8:6.7.7.10-5
> ii  netpbm                2:10.0-15+b1
> ii  ufraw-batch           0.18-2
>
> Versions of packages imagemagick suggests:
> pn  autotrace         <none>
> ii  cups-bsd [lpr]    1.6.2-8
> ii  curl              7.30.0-2
> pn  enscript          <none>
> ii  ffmpeg            6:0.8.7-1
> ii  gimp              2.8.4-1
> ii  gnuplot           4.6.3-2
> pn  grads             <none>
> ii  groff-base        1.22.2-3
> pn  hp2xx             <none>
> pn  html2ps           <none>
> pn  imagemagick-doc   <none>
> ii  libwmf-bin        0.2.8.4-10.3
> pn  mplayer           <none>
> pn  povray            <none>
> pn  radiance          <none>
> ii  sane-utils        1.0.22-7.4
> pn  texlive-base-bin  <none>
> pn  transfig          <none>
> ii  xdg-utils         1.1.0~rc1+git20111210-7
>
> -- no debconf information
>