Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!uupsi!sunic!sics.se!fuug!demos!news-server
From: leo@s514.ipmce.su (Leonid A. Broukhis)
Newsgroups: comp.compression
Subject: JPEG compression errors ?!
Message-ID: <AD1NgIeaKC@s514.ipmce.su>
Date: 3 Jun 91 20:54:35 GMT
Sender: news-server@kremvax.hq.demos.su
Reply-To: leo@s514.ipmce.su
Organization: Inst. of Prec. Mech. & Comp. Equip., Moscow, USSR
Lines: 19


	Hello !

I have some problems when converting GIF files to JPEG format
(using Image Alchemy 1.4 under MS-DOS).

There are some GIF images (320x200,256) which have inacceptable
distortions (green dots on human face, lack of luminance, etc)
after conversion to JPEG (even with quality > 100!!),
and these distortions are independent of the quality.

	Is this due to incorrectness of the JPEG implementation
or due to JPEG algorithm?

	Thanks...
-- 
Leonid A. Broukhis | 89-1-95 Liberty St. | "BROUKHIS" is Hebrew for
7+095 494.6241 (h) | Moscow 123481 USSR  |       "BENEDICTAE"
7+095 132.9475 (o) | (leo@s514.ipmce.su) | {Licet omnia qualibet dicas}