Hello IM people, I'm in the following situation:
I have a "full fat" 32-bit non-indexed TGA file. This file might have more than 256 unique 32-bit values in it. I'd like to reduce that to a TGA so that it has no more than 256 unique 32-values. Then I'd like to save it with 8-bit entries into a 32-bit palette. What makes my situation possibly unusual is that I want the alpha channel to be treated in exactly the same way as R,G and B in this process. If two colors differ only in their alpha channel, they still count as two seperate colors in my problem domain. In fact, the pixels in the images I'm converting differ almost ONLY in the alpha channel (i.e. they're nearly all the same "color", but with different "alpha"). I've tried various combinations of -quantize, -colors, -type Palette / PaletteMatte, etc. But the output TGA is always opaque. When I load the output TGA into a hex editor, the Color map entry field (i.e. the eighth byte of the TGA) is always 24, where I want 32. Can anybody tell me what the -treat-alpha-channel-just-like-the-other-three flag is? ;) Many thanks in advance, Peter Pimley __________________________________________________________________________________________________________________________________________ Information contained in this e-mail is intended for the use of the addressee only, and is confidential and may be the subject of Legal Professional Privilege. Any dissemination, distribution, copying or use of this communication without prior permission of the addressee is strictly prohibited.The views of the author may not necessarily constitute the views of Kuju Entertainment Ltd. Nothing in this email shall bind Kuju Entertainment Ltd in any contract or obligation. The contents of an attachment to this e-mail may contain software viruses which could damage your own computer system. While Kuju Entertainment has taken every reasonable precaution to minimise this risk, we cannot accept liability for any damage which you sustain as a result of software viruses. You should carry out your own virus checks before opening the attachment. Kuju Entertainment Ltd trading as Zoe Mode Registered Office : 10 Woodside Park, Catteshall Lane, Godalming, Surrey, UK, GU7 1LG. Company Number : 3481384. Company Registered in England. __________________________________________________________________________________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email _________________________________________________________________________________________________________________________________________ _______________________________________________ Magick-users mailing list [email protected] http://studio.imagemagick.org/mailman/listinfo/magick-users
