Intel® Integrated Performance Primitives Developer Reference

Developer Reference

  • 2021
  • 01/15/2021
  • Public Content
Contents

GetPerspectiveBound

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

Syntax

IppStatus ippiGetPerspectiveBound(IppiRect
srcRoi
, double
bound
[2][2], const double
coeffs
[3][3]
);
Include Files
ippi.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 perspective transform coefficients.
Description
This function operates with ROI (see ROI Processing in Geometric Transforms).
This function is used as a support function for . It computes vertex coordinates of the smallest bounding rectangle for the quadrangle
quad
, to which the source ROI is mapped by the perspective transform function using the given coefficients
coeffs
.
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.
ippStsSizeErr
Indicates an error condition if
srcRoi
 has a size field with zero or negative value.
ippStsCoeffErr
Indicates an error condition if coefficient values are invalid.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.