Intel® Integrated Performance Primitives Developer Guide and Reference

ID 790148
Date 11/07/2023
Public

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Document Table of Contents

ColorTwist

Applies a color twist matrix to an image with floating-point pixel values.

Syntax

Case 1: Not-in-place operation on pixel-order data

IppStatus ippiColorTwist_<mod>(const Ipp32f* pSrc, int srcStep, Ipp32f* pDst, int dstStep, IppiSize roiSize, const Ipp32f twist[3][4]);

Supported values for mod:

32f_C3R
32f_AC4R

IppStatus ippiColorTwist_32f_C4R(const Ipp32f* pSrc, int srcStep, Ipp32f* pDst, int dstStep, IppiSize roiSize, const Ipp32f twist[4][4]);

Case 2: Not-in-place operation on planar data

IppStatus ippiColorTwist_32f_P3R(const Ipp32f* pSrc[3], int srcStep, Ipp32f* pDst[3], int dstStep, IppiSize roiSize, const Ipp32f twist[3][4]);

Case 3: In-place operation on pixel-order data

IppStatus ippiColorTwist_<mod>(Ipp32f* pSrcDst, int srcDstStep, IppiSize roiSize, const Ipp32f twist[3][4]);

Supported values for mod:

32f_C3IR
32f_AC4IR

Case 4: In-place operation on planar data

IppStatus ippiColorTwist_32f_IP3R(Ipp32f* pSrcDst[3], int srcDstStep, IppiSize roiSize, const Ipp32f twist[3][4]);

Include Files

ippcc.h

Domain Dependencies

Headers: ippcore.h, ippvm.h, ipps.h, ippi.h

Libraries: ippcore.lib, ippvm.lib, ipps.lib, ippi.lib

Parameters

pSrc

Pointer to the source image ROI.

srcStep

Distance in bytes between starts of consecutive lines in the source image.

pDst

Pointer to the destination image ROI.

dstStep

Distance in bytes between starts of consecutive lines in the destination image.

pSrcDst

Pointer to the source and destination image ROI for the in-place operation.

srcDstStep

Distance in bytes between starts of consecutive lines in the source and destination image for the in-place operation.

roiSize

Size of the source and destination ROI in pixels.

twist

The array containing color-twist matrix elements.

Description

This function operates with ROI (see Regions of Interest in Intel IPP).

This function applies the color-twist matrix to all three color channels in the source image with floating-point pixel values to obtain the resulting data in the destination image. The destination channel value is obtained as the result of multiplying the corresponding row of the color-twist matrix by the vector of source pixel channel values.

Return Values

ippStsNoErr

Indicates no error. Any other value indicates an error.

ippStsNullPtrErr

Indicates an error condition if pSrc, pDst, or pSrcDst is NULL.

ippStsSizeErr

Indicates an error condition if roiSize has a field with a zero or negative value.