id summary reporter owner description type status priority milestone component version severity resolution keywords cc 4143 GCP Refinement goocreations warmerdam Here is a patch for gdalwarp to refine GCPs by using a -refine_gcps flag. GCPs will be detected as outliers by using a Least Squares Fit and not be used during warping. enhancement closed normal 1.9.0 default svn-trunk normal fixed gcp refine refinement