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<DIV dir=ltr align=left><SPAN class=834521103-24012006><FONT face=Arial
color=#0000ff size=2>Jennifer -</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=834521103-24012006><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=834521103-24012006><FONT face=Arial
color=#0000ff size=2>You don't give us much information to go on, other than
your dislike of the results!</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=834521103-24012006><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=834521103-24012006><FONT face=Arial
color=#0000ff size=2>If you're consistently seeing poor-quality results, then
there may well be something systematic you're doing in your map files or
MapServer configuration. I'm assuming you're using MapServer to generate
these "horrible-looking" images. If you are, for example, requesting
low-color output from high-color images, you're going to see blotchy
output. DRGs are low-color images (only 13 unique colors) so they are not
as prone to being affected by a low-color output request.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=834521103-24012006><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=834521103-24012006><FONT face=Arial
color=#0000ff size=2>Could you provide an example of the map file and
configuration you're using to retrieve and display these images? There's
nothing special about the WMS interface that inherently limits image quality -
you can get a perfect reproduction of the source imagery in many
cases.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=834521103-24012006><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=834521103-24012006><FONT face=Arial
color=#0000ff size=2> - Ed</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=834521103-24012006><FONT
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=834521103-24012006><FONT size=2>Ed
McNierney<BR>President and Chief Mapmaker<BR>TopoZone.com / Maps a la carte,
Inc.<BR>73 Princeton Street, Suite 305<BR>North Chelmsford, MA
01863<BR>Phone: +1 (978) 251-4242<BR>Fax: +1 (978)
251-1396<BR>ed@topozone.com</FONT> </DIV></SPAN><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
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<FONT face=Tahoma size=2><B>From:</B> UMN MapServer Users List
[mailto:MAPSERVER-USERS@LISTS.UMN.EDU] <B>On Behalf Of </B>Jennifer
Zeisloft<BR><B>Sent:</B> Monday, January 23, 2006 10:00 PM<BR><B>To:</B>
MAPSERVER-USERS@LISTS.UMN.EDU<BR><B>Subject:</B> [UMN_MAPSERVER-USERS] Horrible
Looking WMS Raster Imagery<BR></FONT><BR></DIV>
<DIV></DIV>Greetings All,<BR><BR>We have been noticing that some (but not all)
WMS raster images look pretty terrible (extremely low resolution compared to
what they should be) when added to our MapServer application. For
instance, from TerraServer (<A
href="http://terraservice.net/ogcmap.ashx">http://terraservice.net/ogcmap.ashx</A>),
USGS Digital Ortho Quads are virtually useless regardless of scale, while USGS
DRGs look decent. Daily MODIS imagery from NASA JPL World Map Service
(<SPAN class=label><A
href="http://wms.jpl.nasa.gov/wms.cgi?">http://wms.jpl.nasa.gov/wms.cgi?</A>)
</SPAN>has also typically been a problem. And there are others...
<BR><BR>I have recently been playing with GDAL to display our own rasters, but
also partially with the hope that it might somehow magically fix this problem
(of course it hasn't). <BR><BR>I am wondering whether the display problem is
local or if it is on the data custodian's end, and whether this is typically the
case. Is there any way to correct it? If it is at the custodial end,
what might be done differently to increase the display resolution for WMS
clients (so that we don't make the same mistake)?<BR><BR>I really appreciate any
hints or ideas you can offer.<BR><BR>Thanks much!<BR><BR>Jennifer Zeisloft<BR>UW
Sea Grant<BR></BODY></HTML>