Sorry wrong link. This is the dimap pleiades test dataset: https://drive.google.com/file/d/0B_pKTK9WcAW4RktQUEE2bzVDdGM/view?usp=sharing
On Tue, Jun 23, 2015 at 3:43 PM, Dennis Gocke <[email protected]> wrote: > Hi guys, > > > > following the discussion > http://thread.gmane.org/gmane.comp.gis.gdal.devel/40628 I did some tests > with a pleiades dataset. > > First of all, Astrium’s very own tool (which now vanished from their page) > to convert the pleiades RPC*.XML to _RPC.TXT did not change SAMP_OFF and > LINE_OFF according to the 1,1 pixel center convention, so using this > _RPC.TXT would probably cause issues in most software. > > > > So I wanted to see how the GDAL pleiades mdreader works and stumbled > across some issues: > > - the pleiades mdreader is not triggered when opening the dimap file. > > - when the image is tiled, the dimap reader only opens the first file but > has raster dimensions of all tiles, so trying to read pixels, where the > other tiles should be used, crashes. > > - neither a geotransform nor GCPs are provided when opening the dimap file > (unrelated issue). > > - when opening the individual tile tifs the pleiades mdreader is triggered > and reads the RPC. But it provides the same RPCs for all tiles, which means > for every tile apart from the upper left tile the RPCs are not correct. > > > I’ve uploaded a Pleiades sample with tiles (blackened pixels) here: > > https://drive.google.com/file/d/0B_pKTK9WcAW4UnA2LWJpbFE1ZTQ/view?usp=sharing > > > I think it would be great if GDAL could load all tiles as mosaic from the > dimap (similar to the DG TIL driver) and would provide the RPCs from the > pleiades mdreader for this mosaic raster. This would avoid using various > workarounds. > > > > Best Regards, > > Dennis >
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