manual file types

Paul Koning pkoning at equallogic.com
Tue Feb 1 12:27:20 CST 2005


>>>>> "Fritz" == Fritz Chwolka <fritz_chwolka at t-online.de> writes:

 Fritz> On Tue, 1 Feb 2005 10:30:17 -0500, Paul Koning wrote:

 >> Oh yes, never never never use JPEG for compressing text or line
 >> art scans.  For one thing, it butchers the image, and besides, the
 >> compression isn't very effective.  A scan with the page background
 >> cleaned up to mostly-white will produce a SMALLER file if
 >> compressed by lossless compression in TIFF, PNG, or GIF, than it
 >> does when compressed with the lossy JPEG.  (The "P" in JPEG stands
 >> for "photography" -- and indeed JPEG is ONLY fit for photographs
 >> and similar continuous-tone images, and not for any other kind.)
 >> 
 >> paul
 >> 


 Fritz> Badly my favorite software ABBY finereader 6 uses JPEG for
 Fritz> compressing.  I don't know what finerader 7 makes.  Finerader
 Fritz> 5 makes uses gif compressing format.  So what shall I do?

Throw it out and replace it by a program that doesn't make wrong
assumptions like that.

	    paul




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