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4/8 Bits Indexed+Alpha PNG?

Posted: 2010-05-19T14:19:47-07:00
by goruka
Hi! I´d like to know if is there any way in imagemagick to generate PNGs using indexed colors (4 or 8 bits indices) with palette data that supports varying alpha opacity (not just visible/invisible pixel).

Basically, take any image with alpha channel, and downsample to N colors WITH alpha and save to PNG. I know PNG supports this, but evertything i try to convert to indexed in imagemagick gets rid of the alpha..

thanks!

Re: 4/8 Bits Indexed+Alpha PNG?

Posted: 2010-05-19T14:35:41-07:00
by fmw42