mlib_ImageThresh1_Fp_Inp

- image thresholding

Synopsis

cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>

mlib_status mlib_ImageThresh1_Fp_Inp(mlib_image *srcdst,
     const mlib_d64 *thresh, const mlib_d64 *ghigh, const mlib_d64 *glow);

Description

The mlib_ImageThresh1_Fp_Inp() function compares each pixel in the floating-point source image to a threshold value, in place. If the pixel is less than or equal to the threshold value, then the destination pixel is set to the low output level. If the pixel is greater than the threshold value, then the destination pixel is set to the high output level.

It uses the following equation:

srcdst[x][y][i] = glow[i]   if srcdst[x][y][i] ≤ thresh[i]
srcdst[x][y][i] = ghigh[i]  if srcdst[x][y][i] > thresh[i]

Parameters

The function takes the following arguments:

srcdst

Pointer to source and destination image.

thresh

Threshold value. thresh[i] contains the threshold for channel i.

ghigh

High output level. ghigh[i] contains the high output level for channel i.

glow

Low output level. glow[i] contains the low output level for channel i.

Return Values

The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.

Attributes

See attributes(5) for descriptions of the following attributes:

See Also

mlib_ImageThresh1(3MLIB), mlib_ImageThresh1_Fp(3MLIB), mlib_ImageThresh1_Inp(3MLIB), mlib_ImageThresh2(3MLIB), mlib_ImageThresh2_Fp(3MLIB), mlib_ImageThresh2_Fp_Inp(3MLIB), mlib_ImageThresh2_Inp(3MLIB), mlib_ImageThresh3(3MLIB), mlib_ImageThresh3_Fp(3MLIB), mlib_ImageThresh3_Fp_Inp(3MLIB), mlib_ImageThresh3_Inp(3MLIB), mlib_ImageThresh4(3MLIB), mlib_ImageThresh4_Fp(3MLIB), mlib_ImageThresh4_Fp_Inp(3MLIB), mlib_ImageThresh4_Inp(3MLIB), mlib_ImageThresh5(3MLIB), mlib_ImageThresh5_Fp(3MLIB), mlib_ImageThresh5_Fp_Inp(3MLIB), mlib_ImageThresh5_Inp(3MLIB), attributes(5)