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| author | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2011-03-23 16:24:27 +0000 |
|---|---|---|
| committer | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2011-03-23 16:24:27 +0000 |
| commit | a2cceb566e214edadc26f0e5a0db5cb1ceb31107 (patch) | |
| tree | 14cbaefa70e103852fc00db2ed3219f43abbba99 /ppmmix.html | |
| parent | 11b1d5dba384861e6ea215f91a6d10d7491faf34 (diff) | |
| download | netpbm-mirror-a2cceb566e214edadc26f0e5a0db5cb1ceb31107.tar.gz netpbm-mirror-a2cceb566e214edadc26f0e5a0db5cb1ceb31107.tar.xz netpbm-mirror-a2cceb566e214edadc26f0e5a0db5cb1ceb31107.zip | |
miscellaneous update
git-svn-id: http://svn.code.sf.net/p/netpbm/code/userguide@1441 9d0c8265-081b-0410-96cb-a4ca84ce46f8
Diffstat (limited to 'ppmmix.html')
| -rw-r--r-- | ppmmix.html | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/ppmmix.html b/ppmmix.html index cfeb0ae5..aeabb934 100644 --- a/ppmmix.html +++ b/ppmmix.html @@ -33,7 +33,10 @@ using <b>ppmmix</b> of a black and a white image with a linearly increasing fade factor, you will see an image getting linearly brighter, but the light intensity will increase faster at the end. That is because it requires more intensity change at the bright end of the scale than at the dark end for the -human eye to perceive the same brightness change. +human eye to perceive the same brightness change. This also means that +if the original images aren't all one color, the mixed image is distorted, +since the intensity relationship between pixels is different from the +original image. <P><B>pamcomp</B> is a more general alternative. It allows you to mix images of different size and to have the fade factor vary throughout |