[R-sig-Geo] Problem with ignoring background value
opheliawang at mail.utexas.edu
Sun May 25 20:19:30 CEST 2008
I've been having troubles to get rid of background values (255) of
mosaics (.img) in Erdas Imagine. I've tried "mosaic" (which has options
ignore certain input and output background and 0 values), "rescale"
and 255), ArcGIS copy raster (ignore 0 and 255), etc. etc. Everything
an option to ignore both 0 and 255 that I've tried.
None of those worked in terms of removing the white background of the
photo mosaics. I have nearly 50 images, so I can't manually create AOI
subset each mosaic based on AOI.
Any suggestions? Thanks for you help.
Department of Geography and Environment
University of Texas at Austin
210 West 24th Street, Austin, TX 78712, USA
Email: opheliawang at mail.utexas.edu
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