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- Xref: sparky comp.graphics:13440 alt.graphics.pixutils:2831
- Newsgroups: comp.graphics,alt.graphics.pixutils
- Path: sparky!uunet!psinntp!plx!plxsun!thomas
- From: thomas@plxsun (Thomas Leibold)
- Subject: Re: Your one stop GRAPHICS shop!
- Message-ID: <1993Jan6.091522.27864@plx.com>
- Sender: usenet@plx.com (Usenet Admin)
- Nntp-Posting-Host: plxsun
- Organization: PLEXUS Software, a division of REI
- X-Newsreader: TIN [version 1.1 PL6]
- References: <1993Jan5.193218.6394@a.cs.okstate.edu>
- Date: Wed, 6 Jan 1993 09:15:22 GMT
- Lines: 39
-
- MCCORMICK JOSHUA C (jmccorm@a.cs.okstate.edu) wrote:
- : From article <bobl.aw4c@bobsbox.rent.com>, by bobl@bobsbox.rent.com (Bob Lindabury - SysAdmin):
- :
- : > > Do people use GIF images anymore? I have gone to JPEG myself with
- : > > important 24bit images saved at 100% boosted quality settings.
- :
- : You bet they do. Outside of the internet world, GIF is still *the* method for
- : storing pictures. I hate to start any kind of flame war here, but JPG's a
- : a lossy compression method that is often used improperly, resulting in
- : pictures with severly butchered quality.
- :
- : Because of the quality loss, I don't touch JPG unless I have to. Usually, if
- : I'm wanting to save some space, I'll use a program on the PC called GIFLITE.
- : It usually reduces the size of pictures by 30%, quality loss is completely
- : unnoticeable, and most importantly, the pictures stay in GIF format so that
- : large amounts of time don't have to be spent in order to convert the pictures
- : to a format that can be easily viewed.
-
- I agree that JPEG is a lossy picture compression, that when used incorrectly
- will reduce the picture quality. However, when used properly it will give
- previously unheard of compression ratios without noticeable loss in quality.
- Now the worst thing that you can do to a continous tone (real life) picture
- after removing most of the color information (by putting it into the 8-bit
- GIF format) is to reduce the image content with GIFLITE.
- I have yet to see a side by side comparison where it isn't obvious which
- picture is GIFLITE damaged.
-
- If you reject JPEG because it's lossy, I don't understand why you use GIFLITE.
-
-
- Thomas
-
- P.S.: There is at least one GIF-compressor that achieves avg. 20% lossfree
- compression (GIFBLAST). It also has the advantage to be available for other
- plattforms besides DOS. However it requires de-compression prior to viewing.
-
- --
- Thomas Leibold +1-408-7434388 thomas@plx.com {uupsi,sun}!plx!thomas
- PLEXUS Software, a division of REI. 1310 Chesapeake Terrace, Sunnyvale CA 94089
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