Hi Jeffrey, > I've thought about implementing a projective transform in the qgis > georeferencer, so if you're interested I'll let you know when I get around > to it.
If this interest you, I have just commited an initial implementation of projective warping (see https://trac.osgeo.org/qgis/changeset/13987) to the qgis georeferencer, which is based on the gdalwarper. In principle, it should be relatively easy to integrate this transform into a custom version of gdalwarp. Maybe there's even interest to have such a transform in GDAL proper? I would be willing to contribute the code to GDAL, although the model fitting step uses a singular value decomposition, so this would require some dependency on a linear algebra package (I wouldn't consider it wise to reimplement numerical algorithms from scratch, with their numerous caveats). cheers, Manuel _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
