homog_precision.cpp File Reference

#include "../homog2d.hpp"

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Macros
#define	NUMTYPE   double
	Numerical type for object storage. More...

Functions
Homogr	buildMatrix (int i)
long double	computeDistTransformedLined (Hmatrix_< type::IsHomogr, NUMTYPE > &H, Point2d_< NUMTYPE > pt1, Point2d_< NUMTYPE > pt2)
int	main (int argc, const char **argv)

Macro Definition Documentation

NUMTYPE

#define NUMTYPE   double

Numerical type for object storage.

WIP: evaluate precision of homography on lines

Function Documentation

buildMatrix()

Homogr buildMatrix

(

int

i

)

{
    Homogr H;
    return H;
}

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computeDistTransformedLined()

long double computeDistTransformedLined	(	Hmatrix_< type::IsHomogr, NUMTYPE > &	H,
		Point2d_< NUMTYPE >	pt1,
		Point2d_< NUMTYPE >	pt2
	)

{
    Line2d_<NUMTYPE> line1( pt1, pt2 );
    Point2d_<NUMTYPE> pt = H * pt1; // move the point with H
    Line2d_<NUMTYPE> line2 = H * line1; // move the line with H^{-T}
    return line2.distTo( pt ); // should be 0 !
}

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main()

int main	(	int	argc,
		const char **	argv
	)

{
    char sep = ' ';
    int nb_A = 10;
    int nb_B = 15;
    for( int i=0; i<nb_A; i++ )
    {
        auto H = buildMatrix( i );
        auto Hi = H;
        Hi.inverse().transpose();
        for( int j=0; j<nb_B; j++ )
        {
            Point2d_<NUMTYPE> pt1(x,y):

            auto d = computeDistTransformedLined( Hi, pt1, pt2 );
            std::cout << i << sep << j << sep << d << '\n';
        }
        std::cout << '\n';
    }
}

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