[gdal-dev] Reprojecting image with lat/lon bands - best practice?

[Conrad Bielski]

Hello GDAL-experts,
normally when I use GDAL for reprojecting imagery, the projection information that I use is the source spatial reference (SRS) associated with the imagery. However, now I have imagery which is lat/lon geographic and I have two separate bands which also carry the pixel geographic information. So the following raster inputs all the same size:1. Band 1 = latitude2. Band 2 = longitude3. Band 3 = imagery
The question I have is how best to integrate this information into a reprojection workflow?
I presume that gdalwarp is the best option here, but how can I take advantage of the individual pixel location information (rather than just the extents for example)? I know that I can mosaic into an existing file that I have already created in the target projection. Is this the best way to apply gdalwarp in this context?
I'm just wondering what is the best way to integrate the lat/lon pixel information into my warping using gdalwarp.
Thanks in advance for your help,Conrad
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