1mlib_ImageThresh3(3MLIB) mediaLib Library Functions mlib_ImageThresh3(3MLIB)
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6 mlib_ImageThresh3 - image thresholding
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9 cc [ flag... ] file... -lmlib [ library... ]
10 #include <mlib.h>
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12 mlib_status mlib_ImageThresh3(mlib_image *dst, const mlib_image *src,
13 const mlib_s32 *thresh, const mlib_s32 *ghigh);
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17 The mlib_ImageThresh3() function compares each pixel in the source
18 image to a threshold value. If the pixel is less than or equal to the
19 threshold value, then the destination pixel is set to the value of the
20 source pixel. If the pixel is greater than the threshold value, then
21 the destination pixel is set to the high output level.
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24 It uses the following equation:
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26 dst[x][y][i] = src[x][y][i] if src[x][y][i] ≤ thresh[i]
27 dst[x][y][i] = ghigh[i] if src[x][y][i] > thresh[i]
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31 The function takes the following arguments:
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33 dst Pointer to destination image.
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36 src Pointer to source image.
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39 thresh Threshold value. thresh[i] contains the threshold for channel
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43 ghigh High output level. ghigh[i] contains the high output level
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48 The function returns MLIB_SUCCESS if successful. Otherwise it returns
49 MLIB_FAILURE.
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52 See attributes(5) for descriptions of the following attributes:
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57 ┌─────────────────────────────┬─────────────────────────────┐
58 │ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
59 ├─────────────────────────────┼─────────────────────────────┤
60 │Interface Stability │Committed │
61 ├─────────────────────────────┼─────────────────────────────┤
62 │MT-Level │MT-Safe │
63 └─────────────────────────────┴─────────────────────────────┘
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66 mlib_ImageThresh1(3MLIB), mlib_ImageThresh1_Fp(3MLIB), mlib_ImageTh‐
67 resh1_Fp_Inp(3MLIB), mlib_ImageThresh1_Inp(3MLIB), mlib_ImageTh‐
68 resh2(3MLIB), mlib_ImageThresh2_Fp(3MLIB), mlib_ImageTh‐
69 resh2_Fp_Inp(3MLIB), mlib_ImageThresh2_Inp(3MLIB), mlib_ImageTh‐
70 resh3_Fp(3MLIB), mlib_ImageThresh3_Fp_Inp(3MLIB), mlib_ImageTh‐
71 resh3_Inp(3MLIB), mlib_ImageThresh4(3MLIB), mlib_ImageTh‐
72 resh4_Fp(3MLIB), mlib_ImageThresh4_Fp_Inp(3MLIB), mlib_ImageTh‐
73 resh4_Inp(3MLIB), mlib_ImageThresh5(3MLIB), mlib_ImageTh‐
74 resh5_Fp(3MLIB), mlib_ImageThresh5_Fp_Inp(3MLIB), mlib_ImageTh‐
75 resh5_Inp(3MLIB), attributes(5)
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79SunOS 5.11 2 Mar 2007 mlib_ImageThresh3(3MLIB)