copy-projection.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# ******************************************************************************
#
#  Name:     copy-projection.py (forked from gdalcopyproj.py)
#  Project:  GDAL Python Interface
#  Purpose:  Duplicate the geotransform and projection metadata from
#            one raster dataset to another, which can be useful after
#            performing image manipulations with other software that
#            ignores or discards georeferencing metadata.
#  Author:   Schuyler Erle, [email protected]
#
# ******************************************************************************
#  Copyright (c) 2005, Frank Warmerdam
#  Copyright (c) 2009-2011, Even Rouault <even dot rouault at spatialys.com>
#  Copyright (c) 2020-2021, Luc Hermitte, CSGroup France, handle missing
#                projection, or missing geotransform, or missing GCP
#
#  Permission is hereby granted, free of charge, to any person obtaining a
#  copy of this software and associated documentation files (the "Software"),
#  to deal in the Software without restriction, including without limitation
#  the rights to use, copy, modify, merge, publish, distribute, sublicense,
#  and/or sell copies of the Software, and to permit persons to whom the
#  Software is furnished to do so, subject to the following conditions:
#
#  The above copyright notice and this permission notice shall be included
#  in all copies or substantial portions of the Software.
#
#  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
#  OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
#  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
#  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
#  DEALINGS IN THE SOFTWARE.
# ******************************************************************************

import sys
import logging
import click
from osgeo import gdal

@click.command()
@click.version_option('1.0.0')
@click.argument('reference_filename', type=click.Path(exists=True))
@click.argument('updated_filename', type=click.Path(exists=True))
def main(reference_filename, updated_filename):
    """
    Copy Projection/GetGeoTransform/GCP from reference_filename to updated_filename.
    """
    try:
        logging.info("Copying Projection/GetGeoTransform/GCP from %s to %s",
                reference_filename, updated_filename)

        dataset_reference = gdal.Open(reference_filename)
        if not dataset_reference:
            raise RuntimeError("Cannot open "+reference_filename+" with GDAL")
        dataset_updated = gdal.Open(updated_filename, gdal.GA_Update)
        if not dataset_reference:
            raise RuntimeError("Cannot open "+updated_filename+" with GDAL for modifications")

        projection = dataset_reference.GetProjection()
        geotransform = dataset_reference.GetGeoTransform()
        gcp_count = dataset_reference.GetGCPCount()

        if projection:
            dataset_updated.SetProjection(projection)
        else:
            logging.info("No projection found in %s", reference_filename)

        if geotransform and geotransform != (0, 1, 0, 0, 0, 1):
            dataset_updated.SetGeoTransform(geotransform)
        else:
            logging.info("No geotransformation found in %s", reference_filename)

        if gcp_count:
            dataset_updated.SetGCPs(dataset_reference.GetGCPs(), dataset_reference.GetGCPProjection())
        else:
            logging.info("No GCP found in %s", reference_filename)

    except Exception as ex:
        logging.exception('Error: %s', ex)
        sys.exit(1)

if __name__ == '__main__':
    main()