Changeset 1920 for www


Ignore:
Timestamp:
Nov 8, 2007, 3:33:18 AM (13 years ago)
Author:
Sam Hocevar
Message:
  • Wording.
File:
1 edited

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  • www/study/index.html

    r1899 r1920  
    169169<p> Éric Brasseur wrote <a href="http://www.4p8.com/eric.brasseur/gamma.html">a
    170170pretty comprehensive essay</a> about why on a computer screen a 50% black and
    171 white pattern is equivalent to a gray value of 0.73 instead of 0.5. Conversely,
    172 it clearly means that a gray value of 0.5 should not be approached with a 50%
    173 dither pattern. </p>
     171white pattern should be scaled down to a gray value of 0.73 instead of 0.5 and
     172how major computer graphics software totally misses the point. </p>
     173
     174<p> Conversely, it clearly means that a gray value of 0.5 should not be
     175emulated with a 50% dither pattern. </p>
    174176
    175177<p> So, instead of using 25%, 50% and 75% patterns (which give non-uniform
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