Hi, Forget the WMS clients for a while and send WMS requests from your browser so you can have more control on what really happens.
This should return quite a sharp jpeg image: http://oriondata.homedns.org:8542/cgi-bin/mapserv_jpeg?REQUEST=GetMap&SERVICE=WMS&VERSION=1.1.1&WIDTH=663&HEIGHT=536&LAYERS=mascara&TRANSPARENT=TRUE&FORMAT=image%2Fjpeg&BBOX=477741.3106567791,5339772.595359228,479456.0484341582,5341158.869037471&SRS=EPSG:32719&STYLES= This one not so beautiful 8-bit png: http://oriondata.homedns.org:8542/cgi-bin/mapserv_jpeg?REQUEST=GetMap&SERVICE=WMS&VERSION=1.1.1&WIDTH=663&HEIGHT=536&LAYERS=mascara&TRANSPARENT=TRUE&FORMAT=image%2Fpng&BBOX=477741.3106567791,5339772.595359228,479456.0484341582,5341158.869037471&SRS=EPSG:32719&STYLES= And finally this a top-quality but large 24-bit png: http://oriondata.homedns.org:8542/cgi-bin/mapserv_jpeg?REQUEST=GetMap&SERVICE=WMS&VERSION=1.1.1&WIDTH=663&HEIGHT=536&LAYERS=mascara&TRANSPARENT=TRUE&FORMAT=image%2Fpng%3B+mode%3D24bit&BBOX=477741.3106567791,5339772.595359228,479456.0484341582,5341158.869037471&SRS=EPSG:32719&STYLES= I believe this is somehow related to your WMS clients and not to hardware. I tried your service with OpenJUMP and Windows Vista and for me all the formats I tried (jpeg, gif, 8-bit png and 24-bit png) are OK. Less colours in 8-bit formats is a fact and not an issue. I see you have set image extension to "jpeg". I cannot see anything wrong with that but have a try with "jpg" anyway. -Jukka Rahkonen- Vincent Blanqué wrote: Hi, It appears that you are right, the client only allows loading PNG format. I tested with Arcgis and QGis in the 'bad' computer only PNG format is available, BUT in the 'good', PNG, JPEG, PNG and TIFF are available for the same WMS url: http://oriondata.homedns.org:8542/cgi-bin/mapserv_jpeg? Do you have any explanation to this strange behaviour ? In the 'bad' computer, the grafical card is: NVDIA GForce 7050 PV/630A in the 'good' one: ATI Radeon HD 2600... The issue could be relative to the kind of graphical card ? Thx, Vincent Rahkonen Jukka a écrit : > Hi, > > I strongly believe that Mapserver is sending identical jpegs to all your > computers and the reason is somewhere in the WMS client side. That does not > mean that everything is OK and you should just suffer. > > Investigate the jpeg files that Mapserver is sending by saving some samples > on disk. Open saved images with image processing software and have a look at > image information. Are images technically identical on each computer? If > they are then there must be some differencies in your WMS clients or their > settings. > > My guess is that the bad jpeg is not a jpeg at all but your WMS client is > asking for 8-bit png or gif. > > -Jukka Rahkonen- > > Vincent Blanqué wrote: > > >> Hi, >> >> I have a problem with a WMS service in JPEG format. With >> various computers, I have a bad rendering of the JPEG tiles >> while with another rendering is perfect. You can watch >> screenshots joint to understand better the issue. >> >> My mapfile is written like: >> >> IMAGEQUALITY 95 >> IMAGETYPE jpeg >> >> OUTPUTFORMAT >> NAME jpeg >> DRIVER 'GD/JPEG' >> MIMETYPE 'image/jpeg' >> IMAGEMODE RGB >> EXTENSION 'jpeg' >> END >> >> If you have any solution ? >> >> Thanks, >> >> Vincent >> >> >> > _______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
