JezK
Edit File: magphase.py
#!/usr/bin/env python3 # ****************************************************************************** # # Project: GDAL # Purpose: Example computing the magnitude and phase from a complex image. # Author: Frank Warmerdam, warmerdam@pobox.com # # ****************************************************************************** # Copyright (c) 2008, Frank Warmerdam <warmerdam@pobox.com> # # 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 numpy as np from osgeo import gdal, gdal_array def Usage(): print( f"Usage: {sys.argv[0]} -- This is a sample. Read source to know how to use. --" ) return 2 def doit(src_filename, dst_magnitude, dst_phase): src_ds = gdal.Open(src_filename) xsize = src_ds.RasterXSize ysize = src_ds.RasterYSize print("{} x {}".format(xsize, ysize)) src_image = src_ds.GetRasterBand(1).ReadAsArray() mag_image = pow( np.real(src_image) * np.real(src_image) + np.imag(src_image) * np.imag(src_image), 0.5, ) gdal_array.SaveArray(mag_image, dst_magnitude) phase_image = np.angle(src_image) gdal_array.SaveArray(phase_image, dst_phase) return 0 def main(argv=sys.argv): if len(sys.argv) <= 4: return Usage() # src_filename = 'complex.tif' # dst_magnitude = 'magnitude.tif' # dst_phase = 'phase.tif' if len(argv) > 1: src_filename = argv[1] if len(argv) > 2: dst_magnitude = argv[2] if len(argv) > 3: dst_phase = argv[3] return doit(src_filename, dst_magnitude, dst_phase) if __name__ == "__main__": sys.exit(main(sys.argv))