NVIDIA 2D Image And Signal Performance Primitives (NPP)  Version 11.7.1.*
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Functions
Perspective Transform Utility Functions

The set of perspective transform utility functions. More...

Functions

NppStatus nppiGetPerspectiveTransform (NppiRect oSrcROI, const double quad[4][2], double aCoeffs[3][3])
 Calculates perspective transform coefficients given source rectangular ROI and its destination quadrangle projection. More...
 
NppStatus nppiGetPerspectiveQuad (NppiRect oSrcROI, double quad[4][2], const double aCoeffs[3][3])
 Calculates perspective transform projection of given source rectangular ROI. More...
 
NppStatus nppiGetPerspectiveBound (NppiRect oSrcROI, double bound[2][2], const double aCoeffs[3][3])
 Calculates bounding box of the perspective transform projection of the given source rectangular ROI. More...
 

Detailed Description

The set of perspective transform utility functions.

Function Documentation

NppStatus nppiGetPerspectiveBound ( NppiRect  oSrcROI,
double  bound[2][2],
const double  aCoeffs[3][3] 
)

Calculates bounding box of the perspective transform projection of the given source rectangular ROI.

Parameters
oSrcROISource ROI
boundBounding box of the transformed source ROI
aCoeffsPerspective transform coefficients
Returns
Error codes:
  • NPP_SIZE_ERROR Indicates an error condition if any image dimension has zero or negative value
  • NPP_RECTANGLE_ERROR Indicates an error condition if width or height of the intersection of the oSrcROI and source image is less than or equal to 1
  • NPP_COEFFICIENT_ERROR Indicates an error condition if coefficient values are invalid
NppStatus nppiGetPerspectiveQuad ( NppiRect  oSrcROI,
double  quad[4][2],
const double  aCoeffs[3][3] 
)

Calculates perspective transform projection of given source rectangular ROI.

Parameters
oSrcROISource ROI
quadDestination quadrangle
aCoeffsPerspective transform coefficients
Returns
Error codes:
  • NPP_SIZE_ERROR Indicates an error condition if any image dimension has zero or negative value
  • NPP_RECTANGLE_ERROR Indicates an error condition if width or height of the intersection of the oSrcROI and source image is less than or equal to 1
  • NPP_COEFFICIENT_ERROR Indicates an error condition if coefficient values are invalid
NppStatus nppiGetPerspectiveTransform ( NppiRect  oSrcROI,
const double  quad[4][2],
double  aCoeffs[3][3] 
)

Calculates perspective transform coefficients given source rectangular ROI and its destination quadrangle projection.

Parameters
oSrcROISource ROI
quadDestination quadrangle
aCoeffsPerspective transform coefficients
Returns
Error codes:
  • NPP_SIZE_ERROR Indicates an error condition if any image dimension has zero or negative value
  • NPP_RECTANGLE_ERROR Indicates an error condition if width or height of the intersection of the oSrcROI and source image is less than or equal to 1
  • NPP_COEFFICIENT_ERROR Indicates an error condition if coefficient values are invalid

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