ENVISAT driver patch
|Reported by:||pacesm||Owned by:||warmerdam|
|Severity:||normal||Keywords:||envisat meris GCP|
As discussed at the OSGeo CodeSprint? 2014 with Even Rouault, EOX prepared a patch for the ENVISAT products' driver adding following fixes and enhancements:
- MERIS tie-points (GCPs)
The current driver fails to extract GCPs from tiepoints ADS records not exactly matching the products' MDS records.
The patch implements a robust TP-ADS/MDS record matching based on the comparison of the records' time-stamps.
- MERIS tie-points DEM corrections
The patch applies the MERIS DEM tie-point corrections stored in the products TP-ADS, if present.
- unwrapping tie-points for antimeridian crossing products
The tie-points in the ENVISAT products are in WGS84 lat/lon coordinates wrapped around in the +/-180 projection bounds. This posses a problem for the product crossing the atimeriadian as there is a discontinuity in the GCPs not well handled the GDAL transformers.
The patch unwraps the ENVISAT product GCPs returned by the driver so that they can be safely passed to the GDAL transformers.
Change History (6)
comment:1 Changed 3 years ago by
|Component:||default → GDAL_Raster|
|Keywords:||envisat meris GCP added|