Legacy ImageMagick Discussions Archive

You forgotten to set the Color-Range value!

It seems, that the result use defaults of 255 colors.

This worked for me in the end - I just explicitly applied gamma to the image itself to lighten the resulting greyscale image BUT I still needed to strip out the gAMA setting int he header:-

I´ve tested your image.png testfile.

$:identify image.png
image.png PNG 256x256 256x256+0+0 [color ...

When you build it inner perl, the result will be, that you´ve got!

The first element in a perl array ever will be "0" ... formerly seen as @array[0] or $array[0].

You tried thisone:
time convert -rotate 45 -resize 800x600 -quality 80 ~/2.jpg ~/1.jpg

Try this:
time convert -resize 800x600 -rotate 45 -quality 80 ~/2.jpg ~/1.jpg

Same effect:
time convert -rotate 45 -scale 800x600 -quality 80 ~/2.jpg ~/1.jpg

Should faster:
time convert -scale ...