I'm having issues with the image quality of my maps. I am using topo maps which come in indexed color tiffs (from casil - http://gis.ca.gov/). When zooming in the maps lose quality as the fine lines become dotted and the text becomes nearly unreadable. This is because it resizes the tiffs without first converting them to rgb color. If I take one of the tiffs and put it into a graphics program, convert it to rgb and then scale it down the image qualty is very good (of course the geographic headers are lost). Is there anything I can do in mapserver to get these results?
Mark
