Intel® Integrated Performance Primitives (Intel® IPP) Developer Guide and Reference

ID 790148
Date 3/22/2024
Public
Document Table of Contents

Compare

Compares pixel values of two images using a specified compare operation.

Syntax

IppStatus ippiCompare_<mod>(const Ipp<datatype>* pSrc1, int src1Step, const Ipp<datatype>* pSrc2, int src2Step, Ipp8u* pDst, int dstStep, IppiSize roiSize, IppCmpOp ippCmpOp);

Supported values for mod:

8u_C1R

16u_C1R

16s_C1R

32f_C1R

8u_C3R

16u_C3R

16s_C3R

32f_C3R

8u_C4R

16u_C4R

16s_C4R

32f_C4R

IppStatus ippiCompare_<mod>(const Ipp<datatype>* pSrc1, int src1Step, const Ipp<datatype>* pSrc2, int src2Step, Ipp8u* pDst, int dstStep, IppiSize roiSize, IppCmpOp ippCmpOp);

Supported values for mod:

8u_AC4R

16u_AC4R

16s_AC4R

32f_AC4R

Include Files

ippi.h

Domain Dependencies

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

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

Parameters

pSrc1, pSrc2

Pointers to the source image ROIs.

src1Step, src2Step

Distances in bytes between starts of consecutive lines in the source images.

pDst

Pointer to the destination image ROI.

dstStep

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

roiSize

Size of the source and destination ROI in pixels.

ippCmpOp

Compare operation to be used for comparing the pixel values.

Description

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

This function compares the corresponding pixels of ROI in two source images pSrc1, pSrc2 using the ippCmpOp compare operation, and writes the results to a one-channel Ipp8u image pDst. If the result of the compare is true, the corresponding output pixel is set to an IPP_MAX_8U value; otherwise, it is set to 0.

Return Values

ippStsNoErr

Indicates no error. Any other value indicates an error or a warning.

ippStsNullPtrErr

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

ippStsSizeErr

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

ippStsStepErr

Indicates an error condition if src1Step, src2Step, or dstStep has a zero or negative value.