mlib_ImageColorRGB2Mono - RGB to monochrome conversion
cc [ flag... ] file... –lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_ImageColorRGB2Mono(mlib_image *dst, const mlib_image *src,
const mlib_d64 *weight);
The mlib_ImageColorRGB2Mono() function performs a conversion from a red/green/blue to a monochromatic image. The source image must be a three-channel image. The destination image must be a single-channel image.
It uses the following equation:
dst[x][y][0] = weight[0]*src[x][y][0] +
weight[1]*src[x][y][1] +
weight[2]*src[x][y][2]
The function takes the following arguments:
Pointer to destination image.
Pointer to source image.
Array of three blending coefficients. It is recommended that these sum to 1.0, but it is not required.
The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.
See attributes(5) for descriptions of the following attributes:
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mlib_ImageColorRGB2CIEMono(3MLIB), mlib_ImageColorRGB2CIEMono_Fp(3MLIB), mlib_ImageColorRGB2Mono_Fp(3MLIB), attributes(5)