Color patch image generator

[hdznrrd]

Create color patch images from histogram data to easily and visually evaluate intermediate data results

[hdznrrd]

Histogram data to color patch image.
Currently only works with fixed size images. Uses convert itself to do on the fly color quantization (-colors)

histbin_to_magickdraw.pl converts imagemagick histogram output to width-relative color patch draw commands which can be fed into convert again.

sh -c "convert -size 1280x50 xc:black $(convert  frames/01616.png -colors 16 -define histogram:unique-colors=true -format %c histogram:info:-|sort -rn|../histbin_to_magickdraw.pl) patch.png" && eog patch.png

[hdznrrd]

Currently it produces results like this (original in background, color patch image in overlay, compositing done manually):

video: http://www.youtube.com/watch?v=qig4KOK2R2g
frame: 1616
color bins: 16