Dear gdal community,
I hope this is the right spot to ask questions?
I am trying to use new gdal raster reproject to georeference image
chunks using ground control points. I figured that for some of these
chunks, due to ship movement, the lower left & lower right image
coordinates are switched, which (understandably) leads the algorithm
to fail. however, there is no error message, it just doesn't produce
output. I use:
gdal raster reproject -r bilinear --to SRC_METHOD=GCP_HOMOGRAPHY --co
COMPRESS=DEFLATE -d EPSG:4326 -i
2025-03-17_08-30-44_0_ch0_0_chunk_tmp.tif -o
2025-03-17_08-30-44_0_ch0_0_chunk_tmp_WGS84.tif
with gcps applied like so:
gdal_translate -of GTiff \
-gcp im_x_ul im_y_ul lon_ul, lat_ul \
-gcp im_x_ur im_y_ur lon_ur, lat_ur \
-gcp im_x_ll im_y_l lon_ll, lat_ll \
-gcp im_x_lr im_y_lr lon_lr, lat_lr
(ul/r, ll/r = upper/lower left/right) --> but sometimes, ll and lr are
switched
I would love to catch the error to adjust those files - Is there
something like a verbose mode for gdal raster reproject? Then i could
see what is going on?
Anyways thank you guys so much for all the work you put into the
development of gdal, it is such a powerful tool!
All the best, Mia
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