Intel® Integrated Performance Primitives Developer Guide and Reference

ID 790148
Date 11/07/2023
Public

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Document Table of Contents

Max

Computes the maximum of image pixel values.

Syntax

Case 1: Operation on one-channel data

IppStatus ippiMax_<mod>(const Ipp<datatype>* pSrc, int srcStep, IppiSize roiSize, Ipp<datatype>* pMax);

Supported values for mod:

8u_C1R

16u_C1R

16s_C1R

32f_C1R

Case 2: Operation on multi-channel data

IppStatus ippiMax_<mod>(const Ipp<datatype>* pSrc, int srcStep, IppiSize roiSize, Ipp<datatype> max[3]);

Supported values for mod:

8u_C3R

16u_C3R

16s_C3R

32f_C3R

8u_AC4R

16u_AC4R

16s_AC4R

32f_AC4R

IppStatus ippiMax_<mod>(const Ipp<datatype>* pSrc, int srcStep, IppiSize roiSize, Ipp<datatype> max[4]);

Supported values for mod:

8u_C4R

16u_C4R

16s_C4R

32f_C4R

Include Files

ippi.h

Domain Dependencies

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

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

Parameters

pSrc

Pointer to the source image ROI.

srcStep

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

roiSize

Size of the source ROI in pixels

pMax

Pointer to the maximum pixel value (for one-channel data).

max

Array containing maximum channel values of pixels in the source buffer (for multi-channel data).

Description

This function operates with ROI (see Regions of Interest in Intel IPP). This function computes the maximum pixel value pMax for the source image pSrc. In case of a multi-channel image, the maximum is computed over each channel and stored in the array max.

Return Values

ippStsNoErr

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

ippStsNullPtrErr

Indicates an error condition if pSrc or pMax pointer is NULL.

ippStsSizeErr

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