Get perspective quadrangle vertices
| FwStatus | fwiGetPerspectiveQuad | ( | FwiRect srcRoi, double quad[4][2], const double coeffs[3][3] ); |
| coeffs[3][3] | Coefficients for Warp Affine Perspective transform. | |
| quad[4][2] | Quadrangle vertex coordinates. | |
| srcRoi | Source image ROI. |
This function is used with the GetPerspectiveBound function. It computes the vertex coordinates of the quadrangular destination ROI for the WarpPerspectiveQuad functions.
Quad[0] contains the top right x and y coordinates
Quad[1] contains the top left x and y coordinates
Quad[2] contains the bottom right x and y coordinates
Quad[3] contains the bottom left x and y coordinates