mediaLib Library Functions mlibImageThresh5Fp(3MLIB)
NAME
mlibImageThresh5Fp - image thresholding
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include
mlibstatus mlibImageThresh5Fp(mlibimage *dst, const mlibimage *src,
const mlibd64 *thigh, const mlibd64 *tlow, const mlibd64 *gray);
DESCRIPTION
The mlibImageThresh5Fp() function compares each pixel in
the source image to two threshold values, tlow and thigh. If
the pixel is in between the lower threshold value, tlow, and
the higher threshold value, thigh, (inclusive on both
sides), then the destination pixel is set to the value gray.
Otherwise, the destination pixel is set to the value of the
source pixel.
It uses the following equation:
dst[x][y][i] = src[x][y][i] if src[x][y][i] < tlow[i]
dst[x][y][i] = gray[i] if tlow[i] < src[x][y][i] < thigh[i]
dst[x][y][i] = src[x][y][i] if src[x][y][i] > thigh[i]
PARAMETERS
The function takes the following arguments:
dst Pointer to destination image.
src Pointer to source image.
thigh High threshold value. thigh[i] holds the high
threshold for channel i.
tlow Low threshold value. tlow[i] holds the low thres-
hold for channel i.
gray Output grayscale level. gray[i] holds the output
grayscale level for channel i.
RETURN VALUES
The function returns MLIBSUCES if successful. Otherwise
it returns MLIBFAILURE.
SunOS 5.11 Last change: 2 Mar 2007 1
mediaLib Library Functions mlibImageThresh5Fp(3MLIB)
ATRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
ATRIBUTE TYPE ATRIBUTE VALUE
Interface Stability Committed
MT-Level MT-Safe
SEE ALSO
mlibImageThresh1(3MLIB), mlibImageThresh1Fp(3MLIB),
mlibImageThresh1FpInp(3MLIB),
mlibImageThresh1Inp(3MLIB), mlibImageThresh2(3MLIB),
mlibImageThresh2Fp(3MLIB),
mlibImageThresh2FpInp(3MLIB),
mlibImageThresh2Inp(3MLIB), mlibImageThresh3(3MLIB),
mlibImageThresh3Fp(3MLIB),
mlibImageThresh3FpInp(3MLIB),
mlibImageThresh3Inp(3MLIB), mlibImageThresh4(3MLIB),
mlibImageThresh4Fp(3MLIB),
mlibImageThresh4FpInp(3MLIB),
mlibImageThresh4Inp(3MLIB), mlibImageThresh5(3MLIB),
mlibImageThresh5FpInp(3MLIB),
mlibImageThresh5Inp(3MLIB), attributes(5)
SunOS 5.11 Last change: 2 Mar 2007 2
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