Kyle,
Your error is due to the line that says
PROCESSING "RESAMPLE=AVERAGE"
If you want a quality image then by all means do NOT use average dithering.
example of average dithering
http://www.visgraf.impa.br/Courses/ip00/proj/Dithering1/average_dithering.html
Use one of:
PROCESSING "RESAMPLE=BILINEAR"
PROCESSING "RESAMPLE=BICUBIC" # preferable
Stay away from nearest and average.
Without having to go into Digital processing 101, using nearest or
average will cause your image to "chunk" when it is re-sampled (ie
zoomed in or out); whereas, bilinear and bicublic will give it a nice
"anti-aliased" look as you zoom in.
Cheers,
Clint
--
Clint Johnson
Refractions Research Inc.
[EMAIL PROTECTED]
Kyle Mulka wrote:
Here's one of the WMS tiles I'm using. I've tried stretching it using
different values for the height and width but nothing I've tried has
made it look better or worse.
http://kylemulka.com/cgi-bin/mapserv?map=floorplans.map&REQUEST=GetMap&SERVICE=WMS&VERSION=1.1.1&LAYERS=dude-1&STYLES=&BGCOLOR=0xFFFFFF&TRANSPARENT=TRUE&SRS=EPSG:4326&BBOX=-83.7158203125,42.2905166207974,-83.71444702148438,42.291532494305976&WIDTH=256&HEIGHT=256
-Kyle
Josh Livni wrote:
Kyle,
I could be wrong -- I haven't used a mapserver wms in Google Maps -
but I think your mapserver image may be being squashed a bit. It's a
bit less wide relative to the height/width of your Imagemagick
version. Also the gmap div seems to be a different height/width in
the different versions.
WMS will happily respond with the exact extent, but perhaps not the
relative height/width you expect, thus 'squashing' the image, which
may be causing the image issues you're seeing.
You may want to play with this by adding a &height &width to the wms
query, or you could try playing with the div height/width ratios, and
seeing if you get similar results if one is a bit off, as I may be
off-base with this theory.
-Josh
Kyle Mulka wrote:
I have these very detailed floor plans that I'd like to georeference
and display through mapserver's WMS sever, however, the clarity of
the images degrades when it goes through. How can I increase the
clarity of these floorplans through the WMS?
Here's with mapserver:
http://maps.kylemulka.com/floorplan-test10.php
Here's without (simply chopping up tiles using Imagemagick)
http://maps.kylemulka.com/imagemagick/livedude.php
Here's the parts of the map file for just the first floor:
MAP
NAME "UofM"
FONTSET fontset.txt
PROJECTION
"init=epsg:4326"
END
IMAGETYPE png24
EXTENT -83.747063 42.272038 -83.709126 42.297056
SHAPEPATH "/umdata/"
LAYER
NAME "dude-1"
TYPE raster
DATA "dude1.tif"
PROCESSING "RESAMPLE=AVERAGE"
PROCESSING "DITHER=YES"
METADATA
"wms_title" "dude-1"
"wms_onlineresource"
"http://kylemulka.com/cgi-bin/mapserv?map=floorplans.map&";
"wms_srs" "EPSG:4326"
END
STATUS ON
END
END
-Kyle
