Xref: utzoo comp.graphics:16255 alt.graphics.pixutils:775 Path: utzoo!utgpu!cs.utexas.edu!helios!bcm!dimacs.rutgers.edu!seismo!uunet!shelby!mcnc!taco!hobbes!kdarling From: kdarling@hobbes.ncsu.edu (Kevin Darling) Newsgroups: comp.graphics,alt.graphics.pixutils Subject: Re: Image file format poll results Message-ID: <1991Feb28.204812.12418@ncsu.edu> Date: 28 Feb 91 20:48:12 GMT References: <1991Feb12.120203@Unify.com> <513@lysator.liu.se> <23390@well.sf.ca.us> Sender: news@ncsu.edu (USENET News System) Organization: North Carolina State University Lines: 15 knoll@well.sf.ca.us (John Knoll) writes: > Oh, come on. "The IFF format is an EXCELLENT structure...." I disagree >in that the image format (ILBM) really bites. > The pixel values are stored in bitplanes, so if you want to read the value >of a single pixel of an 8-bit image, you have to access 8 bytes in different >locations, mask out the bits you don't want, and assemble a real byte. > I find this kinda stupid. Actually, up until a few weeks ago, I'd have agreed. Since then I've been thinking about the best format for exchanging picture files, and I must admit that a variable number of planes makes sense from the standpoint of only transmitting what is needed. Altho I'd be happy if even-byte counts (8/16/24 planes) instead went as chunky . best - kevin