Intel® Integrated Performance Primitives Developer Guide and Reference

ID 790148
Date 11/07/2023
Public

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Document Table of Contents

AbsDiffC

Calculates absolute difference between image and scalar value.

Syntax

IppStatus ippiAbsDiffC_<mod>(const Ipp<datatype>* pSrc, int srcStep, Ipp<datatype>* pDst, int dstStep, IppiSize roiSize, int value);

Supported values for mod:

8u_C1R

16u_C1R

IppStatus ippiAbsDiffC_32f_C1R(const Ipp32f* pSrc, int srcStep, Ipp32f* pDst, int dstStep, IppiSize roiSize, Ipp32f value);

Include Files

ippcv.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.

srcStep

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

pDst

Pointer to the destination image.

dstStep

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

roiSize

Size of the image ROI in pixels.

value

Scalar value used to decrement each element of the source image.

Description

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

This function calculates the absolute pixel-wise difference between the source image pSrc and the scalar value by the formula:

pDst(x,y) = abs(pSrc(x,y) - value.

The function clips the value to the range [0, 255] for the 8u data type, and to the range [0, 65535] for the 16u data type.

Return Values

ippStsNoErr

Indicates no error.

ippStsNullPtrErr

Indicates an error condition if one of the specified pointers is NULL.

ippStsSizeErr

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

ippStsStepErr

Indicates an error when srcStep or dstStep is less than roiSize.width * <pixelSize>.

ippStsNotEvenStepErr

Indicates an error condition if one of step values for floating-point images cannot be divided by 4.