Find Cartesian differential Invariants. More...

#include <vil/vil_fwd.h>

Functions
template<class S , class T >
void	vil_cartesian_differential_invariants_3 (const vil_image_view< S > &src, vil_image_view< T > &dest, double scale, unsigned max_kernel_width=0)
	Compute up to 3rd order C.d.i. of an image.

Detailed Description

Find Cartesian differential Invariants.

Author:: Ian Scott

Definition in file vil_cartesian_differential_invariants.h.

Function Documentation

template<class S , class T >

void vil_cartesian_differential_invariants_3	(	const vil_image_view< S > &	src,
		vil_image_view< T > &	dest,
		double	scale,
		unsigned	max_kernel_width
	)

Compute up to 3rd order C.d.i. of an image.

Finds the first 8 Cartesian differential invariants of an image. That is 1x1st order, 3x2nd order and 4x3rd order. The results are returned in 8 adjacent planes (for each input plane) The results are unscaled. If the range of your input is $r$ , you can normalise the results by dividing the planes by $r, r^{-1}, r^{-1}, r^{-1}, r^{-2}, r^{-2}, r^{-2}, r^{-2}$

See Romeny et al. Proc.IPMI1993, pp77-93. and Walker et al. Proc.BMVC1997 pp541-549.

Parameters:

max_kernel_width. Set this value (to an odd number) if you want to restrict the size of the kernel. 0 will let the function choose an appropriate kernel size for the scale.

Definition at line 151 of file vil_cartesian_differential_invariants.txx.

Functions

Detailed Description

Function Documentation