GetAffineBound

Computes the bounding rectangle for the source ROI transformed by the ippiWarpAffine function.

Syntax

IppStatus ippiGetAffineBound (IppiRect srcRoi, double bound[2][2], const double coeffs[2][3]);

Include Files

ippi.h

Flavors with the _L suffix: ippi_l.h

Domain Dependencies

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

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

Parameters

srcRoi	Region of interest in the source image (of the IppiRect type).
bound	Output array. Contains vertex coordinates of the bounding rectangle for the transformed source ROI.
coeffs	The given affine transform coefficients.

Description

This functionis used as a support function for WarpAffineNearest, WarpAffineLinear, and WarpAffineCubic functions. It computes vertex coordinates of the smallest bounding rectangle for the quadrangle quad, to which the source ROI is mapped by the affine transform function using coefficientscoeffs.

bound[0] specifies x, y coordinates of the top-left corner, bound[1] specifies x, y coordinates of the bottom-right corner.

Return Values

ippStsNoErr	Indicates no error. Any other value indicates an error or a warning.
ippStsCoeffErr	Indicates an error condition if c₀₀c₁₁ - c₀₁c₁₀ = 0.
ippStsSizeErr	Indicates an error condition if srcRoi has a size field with zero or negative value.