MinMax

Computes the minimum and maximum of image pixel values.

Syntax

Case 1: Operation on one-channel data

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

Supported values for mod:

8u_C1R

16u_C1R

16s_C1R

32f_C1R

Case 2: Operation on multi-channel data

IppStatus ippiMinMax_<mod>(const Ipp<datatype>* pSrc, int srcStep, IppiSize roiSize, Ipp<datatype> min[3], 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 ippiMinMax_<mod>(const Ipp<datatype>* pSrc, int srcStep, IppiSize roiSize, Ipp<datatype> min[4], Ipp<datatype> max[4]);

Supported values for mod:

8u_C4R

16u_C4R

16s_C4R

32f_C4R

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.
pMin, pMax	Pointers to the minimum and maximum pixel values (for one-channel data).
min, max	Arrays containing minimum and maximum channel values of pixels in the source buffer (for multi-channel data).

Description

The function ippiMinMax is declared in the ippi.h file. It operates with ROI (see Regions of Interest in Intel IPP). This function computes the minimum and maximum pixel values pMin and pMax for the source image pSrc. In case of a multi-channel image, the minimum and maximum is computed over each channel and stored in the arrays min and max.

Return Values

ippStsNoErr	Indicates no error. Any other value indicates an error or a warning.
ippStsNullPtrErr	Indicates an error condition if pSrc, pMin, or pMax pointer is `NULL`.
ippStsSizeErr	Indicates an error condition if roiSize has a field with zero or negative value.