I was able to improve the quality of the image significantly when you
zoom in by resizing and scaling the image beforehand so that mapserver
does a very minimal amount of resampling. I decided to make it optimal
for the second to closest zoom level. The quality is much closer to
where I want it. Try zooming in about three zoom levels.
http://maps.kylemulka.com/floorplan-test10.php
-Kyle
Clint Johnson wrote:
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
