FilterLowpassGetBufferSize

Computes the size of the external buffer for the lowpass filter with border.

Syntax

IppStatus ippiFilterLowpassGetBufferSize_8u_C1R(IppiSize roiSize, IppiMaskSize mask, int* pBufferSize);

IppStatus ippiFilterLowpassGetBufferSize_32f_C1R(IppiSize roiSize, IppiMaskSize mask, int* pBufferSize);

Parameters

roiSize	Maximum size of the source and destination image ROI.
mask	Predefined mask of IppiMaskSize type.
pBufferSize	Pointer to the buffer size.

Description

The function ippiFilterLowpassGetBufferSize is declared in the ippcv.h file. This function computes the size of the external buffer that is required for the filter function ippiFilterLowpassBorder. The kernel of the filter is the matrix of either 3x3 or 5x5 size that is specified by the parameter mask (see Table “Types of the Fixed Filter Functions”). This buffer pBufferSize[0] can be used to filter an image whose width and height are equal to or less than corresponding fields of roiSize.

Return Values

ippStsNoErr	Indicates no error. Any other value indicates an error or a warning.
ippStsNullPtrErr	Indicates an error condition if the pBufferSize pointer is NULL.
ippStsSizeErr	Indicates an error condition if roiSize has a field with a zero or negative value.
ippStsMaskSizeErr	Indicates an error condition if mask has a wrong value.