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mlib_ImageErode4(3MLIB) mediaLib Library Functions mlib_ImageErode4(3MLIB)
NAME
mlib_ImageErode4 - four neighbor erode
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_ImageErode4(mlib_image *dst, const mlib_image *src);
DESCRIPTION
The mlib_ImageErode4() function performs an erode operation on an image by using each pixel's four orthogonal neighbors. The source and
destination images must be single-channel images. The data type can be MLIB_BIT, MLIB_SHORT, MLIB_USHORT, or MLIB_INT.
For 4-neighbor binary images, it uses the following equation:
dst[x][y][0] = AND{ src[x][y][0],
src[x-1][y][0], src[x+1][y][0],
src[x][y-1][0], src[x][y+1][0] }
For 4-neighbor grayscale images, it uses the following equation:
dst[x][y][0] = MIN{ src[x][y][0],
src[x-1][y][0], src[x+1][y][0],
src[x][y-1][0], src[x][y+1][0] }
where x = 1, ..., w-2; y = 1, ..., h-2.
PARAMETERS
The function takes the following arguments:
dst Pointer to destination image.
src Pointer to source image.
RETURN VALUES
The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO
mlib_ImageErode4_Fp(3MLIB), mlib_ImageErode8(3MLIB), mlib_ImageErode8_Fp(3MLIB), attributes(5)
SunOS 5.10 10 Nov 2004 mlib_ImageErode4(3MLIB)