[ka-Map-users] Colour mismatch

[Mike Davis]

As a side note:

We use the following line in the .map files under our grayscale imagery
layers:
PROCESSING "COLOR_MATCH_THRESHOLD=3"

This reduces the number of colors used up by the imagery and makes space in
the color table for other uses.

-Mike


On 1/18/06, harry at politistaten.dk <harry at politistaten.dk> wrote:
>
> Changing config.php output format to PNG24 or JPEG resolves the issue.
>
> Thanks, Harry
>
> > Harry,
> >
> > I've seen this behaviour in mapserver when the output format is 8 bit
> > but the inputs are a higher colour resolution.  I think what happens
> > is raster data can fill the colour table of the 8bit image and cause
> > wildly inaccurate colours to appear.
> >
> > Is it possible that you have jpeg or png24 selected in your map file,
> > but png or gif in the ka-map config.php entry for this map file?  ka-
> > map will override the mapfile output format.
> >
> > Cheers
>
>
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