[Gdal-dev] Help with reprojection of a quicklook...
jeff at terraengine.com
Mon Aug 18 14:18:18 EDT 2003
I have an 8 bit JPEG image that I am trying to reproject.
The image is a quicklook (basically a thumbnail) of a raw Spot scene.
I have control point data for the image which basically consists of 5
pixel locations and the corresponding Lat/Lon coords (the 4 corners and
the center pixel). This data is contained in a separate text file.
I see that this type of thing can be done using something like:
% gdalwarp -t_srs '+proj=utm +zone=11 +datum=WGS84' raw_spot.tif utm11.tif
however, this assumes the control point information is contained in the
source file. In my case, I have a jpeg source file with no control
information contained therein.
Can anyone give me some advice on how I can accomplish this. Perhaps
convert my jpeg to a geoTiff first and somehow add the control point info?
Thanks in advance for any help.
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