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Add image-hint for low-color images.

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For low-color images, it may be better to not use color-palettes.
Users should treat this as one another hint (as with Photo &
Picture) and another parameter for tuning the compression density.
The optimum compression can still be obtained by running (outer loop)
compression with all possible tunable parameters.

Change-Id: Icb1a4face2a84774e16e801aee4a8ae97e232e8a
This commit is contained in:
Vikas Arora
2012-07-31 23:07:52 -07:00
parent 4eb7aa64da
commit dd1c3873fe
6 changed files with 10 additions and 7 deletions
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@ -168,7 +168,7 @@ options:
-noalpha ............... discard any transparency information.
-lossless .............. Encode image losslessly.
-hint <string> ......... Specify image characteristics hint.
One of: photo or picture
One of: photo, picture or graph.
-short ................. condense printed message
-quiet ................. don't print anything.