Horrible Looking WMS Raster Imagery

Jennifer Zeisloft jzeisloft at GMAIL.COM
Tue Jan 24 11:55:46 EST 2006


Hi Bart,

That was exactly what I needed to do.  The problem is fixed!

Thanks for all the help!

Jennifer

On 1/24/06, Eijnden, B. van den (Bart) <b.vdeijnden at agi.rws.minvenw.nl>
wrote:
>
> Jennifer,
>
> try to use PNG24 for the parameter named image_type in chameleon.xml.
>
> Best regards,
> Bart
>
> -----Oorspronkelijk bericht-----
> *Van:* UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU]*Namens
> *Jennifer Zeisloft
> *Verzonden:* dinsdag 24 januari 2006 6:04
> *Aan:* MAPSERVER-USERS at LISTS.UMN.EDU
> *Onderwerp:* Re: [UMN_MAPSERVER-USERS] Horrible Looking WMS Raster Imagery
>
> Hi Frank,
>
> Thanks for the response, Frank.  It is sounding more and more like this is
> a question I ought to forward to the chameleon list - because I am also not
> sure how to generate 24bit output with chameleon!
>
> I appreciate the much needed direction!
>
> Thanks all!
>
> Jennifer
>
> On 1/23/06, Frank Warmerdam <warmerdam at pobox.com> wrote:
> >
> > On 1/23/06, Brent Pedersen <bpederse at nature.berkeley.edu> wrote:
> > > have you tried using image/jpeg?
> >
> > In addition to fetching data from the remote WMSes as
> > JPEG, it is also necessary for mapserver to generate 24bit
> > output (JPEG or PNG24 for instance).  I don't know how to
> > do that with Chameleon myself, but I'm sure there is a setting
> > somewhere.
> >
> > I think Ed is right that the problem is 24bit to 8bit color
> > conversion with correspondingly poor color resolution.
> > Given sufficient blotchiness from this conversion it can
> > even appear that spatial resolution is degraded (though it
> > isn't actually).
> >
> > Best regards,
> > --
> >
> > ---------------------------------------+--------------------------------------
> > I set the clouds in motion - turn up   | Frank Warmerdam,
> > warmerdam at pobox.com
> > light and sound - activate the windows | http://pobox.com/~warmerdam<http://pobox.com/%7Ewarmerdam>
> > and watch the world go round - Rush    | Geospatial Programmer for Rent
> >
>
>
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