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GDAL_SIEVE(1)			     GDAL			 GDAL_SIEVE(1)

NAME
       gdal_sieve - Removes small raster polygons.

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

DESCRIPTION
       gdal_sieve  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.

       NOTE:
	  gdal_sieve is	a Python utility, and is only available	if GDAL	Python
	  bindings are available.

AUTHOR
       Frank Warmerdam <warmerdam@pobox.com>

COPYRIGHT
       1998-2025

				 Feb 11, 2025			 GDAL_SIEVE(1)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=gdal_sieve&sektion=1&manpath=FreeBSD+Ports+14.3.quarterly>

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