1mlib_ImageErode4(3MLIB)   mediaLib Library Functions   mlib_ImageErode4(3MLIB)
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NAME

6       mlib_ImageErode4 - four neighbor erode
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SYNOPSIS

9       cc [ flag... ] file... -lmlib [ library... ]
10       #include <mlib.h>
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12       mlib_status mlib_ImageErode4(mlib_image *dst, const mlib_image *src);
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DESCRIPTION

16       The mlib_ImageErode4() function performs an erode operation on an image
17       by using each pixel's four orthogonal neighbors. The source and  desti‐
18       nation  images  must  be  single-channel  images.  The data type can be
19       MLIB_BIT, MLIB_SHORT, MLIB_USHORT, or MLIB_INT.
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22       For 4-neighbor binary images, it uses the following equation:
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24         dst[x][y][0] = AND{ src[x][y][0],
25                             src[x-1][y][0], src[x+1][y][0],
26                             src[x][y-1][0], src[x][y+1][0] }
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30       For 4-neighbor grayscale images, it uses the following equation:
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32         dst[x][y][0] = MIN{ src[x][y][0],
33                             src[x-1][y][0], src[x+1][y][0],
34                             src[x][y-1][0], src[x][y+1][0] }
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38       where x = 1, ..., w-2; y = 1, ..., h-2.
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PARAMETERS

41       The function takes the following arguments:
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43       dst    Pointer to destination image.
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46       src    Pointer to source image.
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RETURN VALUES

50       The function returns MLIB_SUCCESS if successful. Otherwise  it  returns
51       MLIB_FAILURE.
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ATTRIBUTES

54       See attributes(5) for descriptions of the following attributes:
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59       ┌─────────────────────────────┬─────────────────────────────┐
60       │      ATTRIBUTE TYPE         │      ATTRIBUTE VALUE        │
61       ├─────────────────────────────┼─────────────────────────────┤
62       │Interface Stability          │Committed                    │
63       ├─────────────────────────────┼─────────────────────────────┤
64       │MT-Level                     │MT-Safe                      │
65       └─────────────────────────────┴─────────────────────────────┘
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SEE ALSO

68       mlib_ImageErode4_Fp(3MLIB),                    mlib_ImageErode8(3MLIB),
69       mlib_ImageErode8_Fp(3MLIB), attributes(5)
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73SunOS 5.11                        2 Mar 2007           mlib_ImageErode4(3MLIB)
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