Visible to Intel only — GUID: GUID-FC1139D6-0F3D-48DD-85B3-7A7B0582C6F5
Visible to Intel only — GUID: GUID-FC1139D6-0F3D-48DD-85B3-7A7B0582C6F5
CompareEqualEps
Compares two images with floating-point data, testing whether pixel values are equal within a certain tolerance eps.
Syntax
IppStatus ippiCompareEqualEps_<mod>(const Ipp32f* pSrc1, int src1Step, const Ipp32f* pSrc2, int src2Step, Ipp8u* pDst, int dstStep, IppiSize roiSize, Ipp32f eps);
Supported values for mod:
32f_C1R |
32f_C3R |
32f_C4R |
IppStatus ippiCompareEqualEps_32f_AC4R(const Ipp32f* pSrc1, int src1Step, const Ipp32f* pSrc2, int src2Step, Ipp8u* pDst, int dstStep, IppiSize roiSize, Ipp32f eps);
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. |
eps |
The tolerance value. |
Description
This function operates with ROI (see Regions of Interest in Intel IPP).
This function tests if the corresponding pixels of ROI in two source images pSrc1, pSrc2 are equal within the tolerance eps, and writes the results to a one-channel Ipp8u image pDst. If the absolute value of difference of the pixel values in pSrc1 and pSrc2 is less than or equal to eps, then the corresponding pixel in pDst is set to an IPP_MAX_8U value; otherwise the pixel in pDst is set to 0. For multi-channel images, the differences for all color channel values of a pixel must be within the eps tolerance for the compare condition to be true.
This function processes images with floating-point data only.
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. |
ippStsEpsValErr |
Indicates an error condition if eps has a negative value. |