Damien Dunlop on wrote...
| By merely placing two images side-by-side the colour changed!
|
| How come?
|
I tested your two test images using the latest version and the
color of 'A' does not change!
Mind you there has been changes in the last month which was to solve a
problem where there was enough color space to handle all the colors in
the image generated.
The latest build however did show a quantization failure!
=======8<--------
colors=100 # number of colors for test
quantize=`convert -size 256x$colors gradient:blue-none +dither \
-colors 256 -format %k info:`
dither=`convert -size 256x$colors gradient:blue-none \
-colors 256 -format %k info:`
echo "$colors colors => quantization $quantize => dither $dither"
=======8<--------
It is being worked on, and is regarded as a very serious problem.
| Note that although this command specifies single-colour
| horizonatal slices, the result contains some `foreign' pixels
| within some slices?????.
|
The foreign pixels are not forgein colors, but colors from another part
of the palatte. It is well known as 'dither speckle', and is caused
by the palette having well seperated colors.
See http://www.imagemagick.org/Usage/quantize/#dither_speckle
This should have only happened because 'dither' was replacing colors,
when it should have been finding that the color present matched
the color pallette and should not need dithering.
Anthony Thyssen ( Graphics Enthusiast ) <[EMAIL PROTECTED]>
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At 300 dpi you can tell she's wearing a swimsuit.
At 600 dpi you can tell it's wet.
At 1200 dpi you can tell it's painted on.
I suppose at 2400 dpi you can tell if the paint is giving her a rash.
-- Joshua R. Poulson
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IM Examples http://www.imagemagick.org/Usage/
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