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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