Intel® Integrated Performance Primitives (Intel® IPP) Developer Guide and Reference

ID 790148
Date 3/22/2024
Public
Document Table of Contents

FilterBox

Blurs an image using a simple box filter.

Syntax

IppStatus ippiFilterBox_64f_C1R(const Ipp<datatype>* pSrc, int srcStep, Ipp<datatype>* pDst, int dstStep, IppiSize dstRoiSize, IppiSize maskSize, IppiPoint anchor);

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.

pDst

Pointer to the destination image ROI.

dstStep

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

dstRoiSize

Size of the destination ROI in pixels.

maskSize

Size of the mask in pixels.

anchor

Anchor cell specifying the mask alignment with respect to the position of the input pixel.

Description

This function operates with ROI (see Regions of Interest in Intel IPP).

This function sets each pixel in the destination image as the average of all the input image pixels in the rectangular neighborhood of size maskSize with the anchor cell at that pixel. This has the effect of smoothing or blurring on the input image. To ensure valid operation when image boundary pixels are processed, the application must correctly define additional border pixels (see Borders in Neighborhood Operations).

Return Values

ippStsNoErr

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

ippStsNullPtrErr

Indicates an error if pSrc, pDst, or pSrcDst is NULL.

ippStsSizeErr

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

ippStsStepErr

Indicates an error if srcStep or dstStep has a zero or negative value.

ippStsMaskSizeErr

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

ippStsAnchorErr

Indicates an error if anchor is outside the mask size.

ippStsMemAllocErr

Indicates a memory allocation error.