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Release 1.3
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kornelski committed Apr 10, 2012
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6 changes: 3 additions & 3 deletions README.md
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#Median Cut PNG Posterizer

Reduces number of distinct color/alpha intensities in the image. Unlike typical posterization, which distributes levels evenly, this one tries to pick best levels using Median Cut and Voronoi iteration.
Reduces number of distinct color/alpha intensities in the image. Unlike typical posterization, which distributes levels evenly, this one tries to pick levels intelligently using varaince-based Median Cut and Voronoi iteration.

The goal of this tool is to make RGB/RGBA images more compressible, assuming that lower number of unique byte values increses chance of finding repetition and improves efficiency of Huffman coding.
The goal of this tool is to make RGB/RGBA PNG images more compressible, assuming that lower number of unique byte values increses chance of finding repetition and improves efficiency of Huffman coding.

##Usage

Expand All @@ -15,4 +15,4 @@ Only stdin/stdout is supported.

##GUI?

Integrated in [ImageAlpha.app](http://pngmini.com).
Integrated in [ImageAlpha.app](http://pngmini.com).
2 changes: 1 addition & 1 deletion posterize.c
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Expand Up @@ -246,7 +246,7 @@ static void usage(const char *exepath)
{
const char *name = strrchr(exepath, '/');
if (name) name++; else name = exepath;
fprintf(stderr, "Median Cut PNG Posterizer 1.2 (2011).\n" \
fprintf(stderr, "Median Cut PNG Posterizer 1.3 (2012).\n" \
"Usage: %s [-d] levels\n\n" \
"Specify number of levels 2-255 as an argument. -d enables dithering\n" \
"Image is always read from stdin and written to stdout.\n"
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