ahg@k.cc.purdue.edu (Allen Braunsdorf) (05/11/88)
I would like to know which image storage formats are most widely used by comp.graphics subscribers. I use IFF here (much of my work is on an Amiga 2000, the rest on UNIX(tm) systems and several graphic printers) and it does everything I need, but I am looking at alternatives. So far, many people have pointed me to GIF. GIF is not acceptable for my use (initially resizing and resampling) because aspect ratio is important (Amiga pixels are 5:11 or 10:11 or 20:11 our Mac is 1:1... etc.) and that standard says nothing about it. I am porting my graphics utilities to the Amiga and would like the package to be able to read as many different formats as I can so I can import more new images. Is the set of portable bitmap utilities a good place to start? Allen Braunsdorf WORK k.cc.purdue.edu!ahg General Consultant SCHOOL ei.ecn.purdue.edu!braunsdo Purdue University Computing Center HOME ee.ecn.purdue.edu!gawk!akb
pokey@well.UUCP (Jef Poskanzer) (05/12/88)
In the referenced message, ahg@k.cc.purdue.edu (Allen Braunsdorf) wrote:
>Is the set of portable bitmap utilities a good place to start?
Probably not. Pbm is only for monochrome square-pixel bitmaps. No
colormaps, no non-square-pixels. This is deliberate, since the operations
on more general pixmaps are nowhere near as easy to define.
However, I think the model of one lowest-common-denominator format with
a star-shaped network of format converters is a good one. If you are
interested in making a "portable pixmap" package, I'd be glad to help.
---
Jef
Jef Poskanzer jef@lbl-rtsg.arpa ...well!pokey
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