Content-type: text/html Man page of mlib_ImageColorErrorDiffusion3x3

mlib_ImageColorErrorDiffusion3x3

Section: mediaLib Library Functions (3MLIB)
Updated: 2 Mar 2007
Index Return to Main Contents
 

NAME

mlib_ImageColorErrorDiffusion3x3 - true color to indexed color conversion using error diffusion  

SYNOPSIS

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

mlib_status mlib_ImageColorErrorDiffusion3x3(mlib_image *dst,
    const mlib_image *src, const mlib_s32 *kernel, mlib_s32 scale,
    const void *colormap);

 

DESCRIPTION

The mlib_ImageColorErrorDiffusion3x3() function converts a true color image to a pseudo color image with the method of error diffusion dithering. The source image can be an MLIB_BYTE or MLIB_SHORT image with three or four channels. The destination must be a single-channel MLIB_BYTE or MLIB_SHORT image.

The last parameter, colormap, is an internal data structure for inverse color mapping. Create it by calling the mlib_ImageColorTrue2IndexInit() function.  

PARAMETERS

The function takes the following arguments:

dst

Pointer to destination or destination image.

src

Pointer to source or source image.

kernel

Pointer to the 3x3 error-distribution kernel, in row major order.

scale

The scaling factor for kernel to convert the input integer coefficients into floating-point coefficients:

floating-point coefficient = integer coefficient * \
2**(-scale)

colormap

Internal data structure for inverse color mapping.

 

RETURN VALUES

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

ATTRIBUTES

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

ATTRIBUTE TYPEATTRIBUTE VALUE

Interface StabilityCommitted

MT-Level

 

SEE ALSO

mlib_ImageColorOrderedDither8x8(3MLIB), mlib_ImageColorTrue2Index(3MLIB), mlib_ImageColorTrue2IndexFree(3MLIB), mlib_ImageColorTrue2IndexInit(3MLIB), attributes(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
PARAMETERS
RETURN VALUES
ATTRIBUTES
SEE ALSO

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Time: 02:38:13 GMT, October 02, 2010