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Old 01-13-2007, 02:47 PM   #16
ktinkel
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Quote:
Originally Posted by Molly/CA View Post
So do you happen to know how 'lossless compression' is achieved? The only think I can think of is that identical pixels are indexed (mapped? whatever the word would be) rather than all their duplicates being part of the conglomeration.
Not sure I quite understand it all, but it is some sort of encoding scheme. It is generally limited to about 50% size reduction.

This article on Lossless Data Compression may explain it so you can understand it. My mind goes blank when I try to read it.

   
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