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FRACTILE_MASK

Section: C Library Functions (3)
Updated: 16 Mar 1998
Index

NAME

fractile_mask - noise reduction filtering

SYNTAX

#include <xite/median.h>

int fractile_mask( IBAND inband, IBAND outband,
ISS_BAND mask, int mirror, double fractile );

DESCRIPTION

Filters the input band into the output bandusing a sorting filter using mask.Sorts allelements in the inimage according to mask andselects the fractilepixel.

If fractile= 0.5, this is a median filter. If fractileis 0.0, this is a mean filter. If fractileis 1.0, this is amax-filter. If mirroris true, the mask is mirrored withrespect to origo before it is applied.

RESTRICTIONS

inbandand outbandmust have pixeltype unsigned byte.All non-complex pixeltypes are handled. The two bandsmust also have the same size.

RETURN VALUE

0 => ok
2 => input band must be of same type as output band
3 => input band must be of same size as output band

AUTHOR

Otto Milvang, BLAB, Ifi, UiO

ID

$Id: fractile_mask.c,v 1.19 1997/01/29 10:43:20 svein Exp $

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