Package: pngnq Version: 1.0-2 Severity: wishlist
Upstream page http://pngnq.sourceforge.net/ contains useful information not found from the manual page. Please consider adding new section EXAMPLES where the commands pngnq(1) and pngcrush(1) are used together. >From upstream page: Compression Pngnq seems to work best when quantizing to a fairly large number of colors (>=64). This mainly a result of the visible edges due to the lack of dithering. The amount of compression of images gained is determined largely by the level of quantization. Using a tool like pngcrush to further process these images results in slightly smaller images than with methods that dither the image. This is probably due to the lack of high frequency data in the non-dithered images. To quantize and compress an image, for example image.png, with the compressed output as smallimage.png, I do this: pngnq -n 256 image.png && pngcrush image-nq8.png smallimage.png This usually results in a greater than 50% compression with a small loss of detail. -- System Information: Debian Release: squeeze/sid APT prefers testing APT policy: (990, 'testing'), (500, 'unstable'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 2.6.32-5-amd64 (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/dash Versions of packages pngnq depends on: ii libc6 2.11.2-6 Embedded GNU C Library: Shared lib ii libpng12-0 1.2.44-1 PNG library - runtime ii zlib1g 1:1.2.3.4.dfsg-3 compression library - runtime pngnq recommends no packages. pngnq suggests no packages. -- no debconf information -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
