mlib_imagecolorerrordiffusion3x3(3mlib) [opensolaris man page]
mlib_ImageColorErrorDiffusion3x3(3MLIB) mediaLib Library Functions mlib_ImageColorErrorDiffusion3x3(3MLIB) 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_ImageColorTrue2Index- Init() 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 TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Committed | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mlib_ImageColorOrderedDither8x8(3MLIB), mlib_ImageColorTrue2Index(3MLIB), mlib_ImageColorTrue2IndexFree(3MLIB), mlib_ImageColorTrue2Index- Init(3MLIB), attributes(5) SunOS 5.11 2 Mar 2007 mlib_ImageColorErrorDiffusion3x3(3MLIB)
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mlib_ImageColorOrderedDitherMxN(3MLIB) mediaLib Library Functions mlib_ImageColorOrderedDitherMxN(3MLIB) NAME
mlib_ImageColorOrderedDitherMxN - true-color to indexed-color or grayscale to black-white conversion, using ordered dithering SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_ImageColorOrderedDitherMxN(mlib_image *dst, const mlib_image *src, const mlib_s32 **dmask, mlib_s32 m, mlib_s32 n, mlib_s32 scale, const void *colormap); DESCRIPTION
The mlib_ImageColorOrderedDitherMxN() function converts a 3-channel image to a 1-channel indexed image, or converts a 1-channel grayscale image to a 1-channel MLIB_BIT image, with the method of ordered dithering. The src can be an MLIB_BYTE image with 1 or 3 channels. The dst must be a 1-channel MLIB_BIT or MLIB_BYTE image. The colormap must be created by mlib_ImageColorDitherInit(), and it must have a colorcube included. The dither masks are required to have the following property: 0 <= dmask[i][j] < 2**scale; scale > 0 PARAMETERS
The function takes the following arguments: dst Pointer to destination image. src Pointer to source image. dmask Pointer to the dither masks, one per channel, in row major order. m Mask width. m > 1. n Mask height. n > 1. scale Scaling factor for dmask to convert the input integer coefficients into floating-point coefficients: floating-point coefficient = integer coefficient * 2**(-scale) colormap Internal data structure for image dithering. 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 TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mlib_ImageColorDitherInit(3MLIB), mlib_ImageColorDitherFree(3MLIB), mlib_ImageColorErrorDiffusion3x3(3MLIB), mlib_ImageColorErrorDiffusion- MxN(3MLIB), mlib_ImageColorOrderedDither8x8(3MLIB), attributes(5) SunOS 5.10 10 Nov 2004 mlib_ImageColorOrderedDitherMxN(3MLIB)