Visible to Intel only — GUID: GUID-AD031381-CCDC-4298-BEC7-D762FC474957
Visible to Intel only — GUID: GUID-AD031381-CCDC-4298-BEC7-D762FC474957
MulScale
Multiplies pixel values of two images and scales the products.
Syntax
Case 1: Not-in-place operation
IppStatus ippiMulScale_<mod>(const Ipp<datatype>* pSrc1, int src1Step, const Ipp<datatype>* pSrc2, int src2Step, Ipp<datatype>* pDst, int dstStep, IppiSize roiSize);
Supported values for mod:
8u_C1R |
16u_C1R |
8u_C3R |
16u_C3R |
8u_C4R |
16u_C4R |
8u_AC4R |
16u_AC4R |
Case 2: In-place operation
IppStatus ippiMulScale_<mod>(const Ipp<datatype>* pSrc, int srcStep, Ipp<datatype>* pSrcDst, int srcDstStep, IppiSize roiSize);
Supported values for mod:
8u_C1IR |
16u_C1IR |
8u_C3IR |
16u_C3IR |
8u_C4IR |
16u_C4IR |
8u_AC4IR |
16u_AC4IR |
Include Files
ippi.h
Domain Dependencies
Headers: ippcore.h, ippvm.h, ipps.h
Libraries: ippcore.lib, ippvm.lib, ipps.lib
Parameters
pSrc, pSrc1, pSrc2 |
Pointers to the source images ROI. |
srcStep, 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. |
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. |
Description
This function operates with ROI (see Regions of Regions of Interest in Intel IPP).
This function multiplies corresponding pixel values of two input buffers and scales the products using the following formula:
dst_pixel = src1_pixel * src2_pixel / max_val,
where src1_pixel and src2_pixel are pixel values of the source buffers, dst_pixel is the resultant pixel value, and max_val is the maximum value of the pixel data range (see Table “Image Data Types and Ranges” for details). The function is implemented for 8-bit and 16-bit unsigned data types only.
Note that the functions with AC4 descriptor do not process alpha channelss.
Return Values
ippStsNoErr |
Indicates no error. Any other value indicates an error or a warning. |
ippStsNullPtrErr |
Indicates an error condition if any 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 condition if any of the specified buffer step values is zero or negative. |