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	     |Committed 		   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mlib_ImageErode4_Fp(3MLIB), mlib_ImageErode8(3MLIB), mlib_ImageErode8_Fp(3MLIB), attributes(5)

SunOS 5.11							    2 Mar 2007						   mlib_ImageErode4(3MLIB)