/usr/bin/pct2rgb.py is in python-gdal 1.11.3+dfsg-3build2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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#******************************************************************************
# $Id: pct2rgb.py 27490 2014-07-02 17:43:54Z rouault $
#
# Name: pct2rgb
# Project: GDAL Python Interface
# Purpose: Utility to convert palletted images into RGB (or RGBA) images.
# Author: Frank Warmerdam, warmerdam@pobox.com
#
#******************************************************************************
# Copyright (c) 2001, Frank Warmerdam
# Copyright (c) 2009-2010, Even Rouault <even dot rouault at mines-paris dot org>
#
# 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.
#******************************************************************************
try:
from osgeo import gdal
except ImportError:
import gdal
try:
progress = gdal.TermProgress_nocb
except:
progress = gdal.TermProgress
try:
import numpy as Numeric
Numeric.arrayrange = Numeric.arange
except ImportError:
import Numeric
import sys
import os.path
def Usage():
print('Usage: pct2rgb.py [-of format] [-b <band>] [-rgba] source_file dest_file')
sys.exit(1)
# =============================================================================
# Mainline
# =============================================================================
format = 'GTiff'
src_filename = None
dst_filename = None
out_bands = 3
band_number = 1
gdal.AllRegister()
argv = gdal.GeneralCmdLineProcessor( sys.argv )
if argv is None:
sys.exit( 0 )
# Parse command line arguments.
i = 1
while i < len(argv):
arg = argv[i]
if arg == '-of':
i = i + 1
format = argv[i]
elif arg == '-b':
i = i + 1
band_number = int(argv[i])
elif arg == '-rgba':
out_bands = 4
elif src_filename is None:
src_filename = argv[i]
elif dst_filename is None:
dst_filename = argv[i]
else:
Usage()
i = i + 1
if dst_filename is None:
Usage()
# ----------------------------------------------------------------------------
# Open source file
src_ds = gdal.Open( src_filename )
if src_ds is None:
print('Unable to open %s ' % src_filename)
sys.exit(1)
src_band = src_ds.GetRasterBand(band_number)
# ----------------------------------------------------------------------------
# Ensure we recognise the driver.
dst_driver = gdal.GetDriverByName(format)
if dst_driver is None:
print('"%s" driver not registered.' % format)
sys.exit(1)
# ----------------------------------------------------------------------------
# Build color table.
ct = src_band.GetRasterColorTable()
ct_size = ct.GetCount()
lookup = [Numeric.arrayrange(ct_size),
Numeric.arrayrange(ct_size),
Numeric.arrayrange(ct_size),
Numeric.ones(ct_size) * 255]
if ct is not None:
for i in range(ct_size):
entry = ct.GetColorEntry(i)
for c in range(4):
lookup[c][i] = entry[c]
# ----------------------------------------------------------------------------
# Create the working file.
if format == 'GTiff':
tif_filename = dst_filename
else:
tif_filename = 'temp.tif'
gtiff_driver = gdal.GetDriverByName( 'GTiff' )
tif_ds = gtiff_driver.Create( tif_filename,
src_ds.RasterXSize, src_ds.RasterYSize, out_bands )
# ----------------------------------------------------------------------------
# We should copy projection information and so forth at this point.
tif_ds.SetProjection( src_ds.GetProjection() )
tif_ds.SetGeoTransform( src_ds.GetGeoTransform() )
if src_ds.GetGCPCount() > 0:
tif_ds.SetGCPs( src_ds.GetGCPs(), src_ds.GetGCPProjection() )
# ----------------------------------------------------------------------------
# Do the processing one scanline at a time.
progress( 0.0 )
for iY in range(src_ds.RasterYSize):
src_data = src_band.ReadAsArray(0,iY,src_ds.RasterXSize,1)
for iBand in range(out_bands):
band_lookup = lookup[iBand]
dst_data = Numeric.take(band_lookup,src_data)
tif_ds.GetRasterBand(iBand+1).WriteArray(dst_data,0,iY)
progress( (iY+1.0) / src_ds.RasterYSize )
tif_ds = None
# ----------------------------------------------------------------------------
# Translate intermediate file to output format if desired format is not TIFF.
if tif_filename != dst_filename:
tif_ds = gdal.Open( tif_filename )
dst_driver.CreateCopy( dst_filename, tif_ds )
tif_ds = None
gtiff_driver.Delete( tif_filename )
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