[GRASSLIST:9696]

Hi All,
I'm trying to prepare some ortho images for use in mapserver. Basically
what I'm trying to do is merge together 2 ortho MrSid images that are
different resolutions. The problem I'm having has to do with the MrSid
nodata value not being consistently 0 0 0 creating speckling in overlapping
areas(setting transparency to 0 0 0 filters out most "nodata"). Is there
away to mask overlapping areas or filter them? Any advice would be great.

Travis

(attachments)

20cm_ortho.jpg
30cm_ortho.jpg
merged_ortho.jpg