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- Newsgroups: comp.sys.amiga.graphics
- Path: sparky!uunet!mcsun!news.funet.fi!funic!usenet
- From: TMakinen
- Subject: Re: JPEG compressions
- Message-ID: <1993Jan23.133018.416@nic.funet.fi>
- Sender: usenet@nic.funet.fi
- Nntp-Posting-Host: cig.fmi.fi
- Organization: <none>
- References: <1993Jan23.093844.27675@etek.chalmers.se>
- Date: Sat, 23 Jan 93 13:30:18 GMT
- Lines: 17
-
- In article <1993Jan23.093844.27675@etek.chalmers.se>
- pflodin@etek.chalmers.se (Per Flodin) writes:
-
- >I'd like to keep my pics as intact as possible so I wonder if a rate
- >of 100 (the maximum allowable rate) removes any data or if it just
- >compresses? I think that a JPEG file using compression rate of 100
- >still would be smaller than most other formats, or?
-
- After you have compressed a 24 bit picture using a rate of about 85% and you
- compare it to the original side by side, you have to have a magnifying lens,
- a colour cromatograph, a CIA handbook and 10 free hours before you are able
- to tell the difference. This, of course, depends on the picture. JPG is
- designed to compress photorealistic pictures. "Cartoonlike" pictures with
- few bitplanes can be compressed more effectively with other formats.
- JPG is the best thing happened in the era of computer graphics until now.
-
- Teemu
-