Package: imagemagick Version: 6:6.2.4.5-0.6 Severity: normal ImageMagick seems to ignore the alpha channel when it reads a PNG file with the 'grayscale + alpha' color mode.
Attached is a simple example; it has a vertical grayscale gradient and a horizontal opacity gradient. Gimp(1) and gqview(1) correctly shows it as being partially transparent, but the transparency disappears with display(1), and even using convert(1) to convert _from_ PNG _to_ PNG drops the alpha channel. -- System Information: Debian Release: testing/unstable APT prefers unstable APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable') Architecture: i386 (i686) Shell: /bin/sh linked to /bin/bash Kernel: Linux 2.4.27makholm6 Locale: LANG=en_DK, LC_CTYPE=en_DK.iso88591 (charmap=ISO-8859-1) Versions of packages imagemagick depends on: ii libbz2-1.0 1.0.3-2 high-quality block-sorting file co ii libc6 2.3.5-12 GNU C Library: Shared libraries an ii libfreetype6 2.1.10-1 FreeType 2 font engine, shared lib ii libice6 6.9.0.dfsg.1-4 Inter-Client Exchange library ii libjasper-1.701-1 1.701.0-2 The JasPer JPEG-2000 runtime libra ii libjpeg62 6b-11 The Independent JPEG Group's JPEG ii liblcms1 1.13-1 Color management library ii libmagick9 6:6.2.4.5-0.6 Image manipulation library ii libpng12-0 1.2.8rel-5 PNG library - runtime ii libsm6 6.9.0.dfsg.1-4 X Window System Session Management ii libtiff4 3.8.0-1 Tag Image File Format (TIFF) libra ii libx11-6 6.9.0.dfsg.1-4 X Window System protocol client li ii libxext6 6.9.0.dfsg.1-4 X Window System miscellaneous exte ii libxml2 2.6.23.dfsg.1-0.1 GNOME XML library ii zlib1g 1:1.2.3-9 compression library - runtime imagemagick recommends no packages. -- no debconf information
comptestB.png
Description: PNG image
