Georeference problem with Envisat Images
|Reported by:||timatkinson||Owned by:||chaitanya|
|Cc:||warmerdam, Even Rouault, antonio|
Gdal 1.6.2 (as featured in Fedora 13) and gdal 1.7.2 (as featured in Ubuntu 10.4) both have a problem with Georeference of Envisat Images
It appears they are reading both the Geolocation grid ADS (correct) and the Doppler Centroid Grid (incorrect) as GCPs.
The numbers in the grids are similar but actually different and hence you get two sets of ground coordinates per one GCP Line,Column
Run the command line below (*.N1 any envisat file will do)
gdalinfo *.N1 | grep \(0.5,0.5\) and you'll instantly see the problem