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List: mapserver-dev
Subject: [mapserver-dev] Help with a black border on an image file (.img)
From: littlenewbie <omar_tablas () hotmail ! com>
Date: 2011-07-11 17:43:58
Message-ID: 1310406238435-6571881.post () n2 ! nabble ! com
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Hello, I'm new using Mapserver, and I really don't know much about GIS but
I'm trying to learn, I hope you can help me with this: I have an image file
that shows a black border as you can see in the image the thing is that I
want to "disappear" the black border in order to see only the image.
I am running Mapserver on Fedora 14 and using pmapper as php/mapscript
framework.
I'm trying some things such as:
OUTPUTFORMAT
NAME "pnga"
DRIVER "AGG/PNG"
MIMETYPE "image/png"
IMAGEMODE RGBA
FORMATOPTION
"PALETTE=/var/www/html/pmapper/config/prueba_raster/palette.txt"
TRANSPARENT ON
END
in the "palette.txt" I've tried to fill the 255 values with "0,0,0,0" and
"255,255,255,255" because I read something about transparency with this file
and the values.
I've also tried to use "nearblack" utility of GDAL library because I read
that it "sets" all pixels that are black around the collar image to white in
order to treat them as transparent when mosaicing.
http://osgeo-org.1803224.n2.nabble.com/file/n6571881/image.jpg
I hope you can help me, Thank you in advance :D
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