UndistortRadial

Corrects radial distortions of the single image.

Syntax

IppStatus ippiUndistortRadial_<mod>(const Ipp<datatype>* pSrc, int srcStep, Ipp<datatype>* pDst, int dstStep, IppiSize roiSize, Ipp32f fx, Ipp32f fy, Ipp32f cx, Ipp32f cy, Ipp32f k1, Ipp32f k2, Ipp8u* pBuffer);

Supported values for mod:

8u_C1R	16u_C1R	32f_C1R
8u_C3R	16u_C3R	32f_C3R

Parameters

pSrc: Pointer to the ROI in the source distorted image.
srcStep: Distance in bytes between starts of consecutive lines in the source image.
pDst: Pointer to the ROI in the destination corrected image.
dstStep: Distance in bytes between starts of consecutive lines in the destination image.
roiSize: Size of source and destination images ROI in pixels.
fx: Focal lengths along the x axis.
fy: Focal lengths along the y axis.
cx: x-coordinate of the principal point.
cy: y-coordinate of the principal point.
k1: First coefficient of radial distortion.
k2: Second coefficient of radial distortion.
pBuffer: Pointer to the external buffer.

Description

The function ippiUndistortRadial is declared in the ippcv.h file. It operates with ROI (see Regions of Interest in Intel IPP).

This function corrects radial distortions of the single source image pSrc and stores corrected image in the pDst. Correction is performed accounting camera parameters fx, fy, cx, cy and radial distortion parameters k1, k2. The function can also pass the pointer to the external buffer pBuffer whose size should be computed previously using the function ippiUndistortGetSize. If a null pointer is passed, slower computations without an external buffer will be performed.

Return Values

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error if pSrc or pDst is NULL.
ippStsSizeErr	Indicates an error condition if roiSize has a field with zero or negative value.
ippStsStepErr	Indicates an error condition if srcStep is less than roiSize.width * <pixelSize> , or dstStep is less than roiSize.width * <pixelSize>.
ippStsNotEvenStepErr	Indicates an error condition if one of the step values is not divisible by 4 for floating-point images, or by 2 for short-integer images.
ippStsBadArgErr	Indicates an error if fx or fy is equal to 0.