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Thread

2000.11.07 15:55 "OJPEG vs JPEG", by Michael O'Rourke
2000.11.07 16:29 "Re: OJPEG vs JPEG", by Helge Blischke
2000.11.08 06:07 "Re: OJPEG vs JPEG", by Tom Lane
2001.01.04 14:07 "Re: NeXT tiffs", by Dale Amon
2001.01.05 11:40 "Re: NeXT tiffs", by Dale Amon
2000.11.08 14:20 "Re: OJPEG vs JPEG", by Ken Murchison

2000.11.08 06:07 "Re: OJPEG vs JPEG", by Tom Lane

Can someone point to me to the spec of JPEG vs OJPEG.

Have a look at http://partners.adobe.com. There's a link to technotes, and there you should find a document "TTN2.draft.txt"

which describes this stuff in detail.

Dunno about Adobe, but the copy I consider authoritative is at the IJG FTP site, ftp://ftp.uu.net/graphics/jpeg/TIFFTechNote2.txt.gz

regards, tom lane

                        organizer, Independent JPEG Group