Vikas Arora dd1c3873fe Add image-hint for low-color images.
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
2012-07-31 23:11:19 -07:00
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2012-07-31 23:11:19 -07:00