NAME

       gdal_sieve - Removes small raster polygons.

SYNOPSIS

          gdal_sieve.py [--help] [--help-general]
                        [-q] [-st threshold] [-4] [-8] [-o name=value]
                        <srcfile> [-nomask] [-mask filename] [-of format] [<dstfile>]

DESCRIPTION

       gdal_sieve.py  script  removes  raster  polygons  smaller  than a provided threshold size (in pixels) and
       replaces them with the pixel value of the largest neighbour polygon. The result can be  written  back  to
       the existing raster band, or copied into a new file.

       The input dataset is read as integer data which means that floating point values are rounded to integers.
       Re-scaling  source  data  may  be necessary in some cases (e.g. 32-bit floating point data with min=0 and
       max=1).

       Additional details on the algorithm are available in the GDALSieveFilter() docs.

AUTHOR

       Frank Warmerdam <warmerdam@pobox.com>

COPYRIGHT

       1998-2024

                                                  Feb 08, 2024                                     GDAL_SIEVE(1)