core/vil/vil_sample_grid_bicub.h File Reference

Bicubic grid sampling function for 2D images. More...

#include <vil/vil_image_view.h>

Go to the source code of this file.

Functions
template<class imType , class vecType >
void	vil_sample_grid_bicub (vecType *v, const vil_image_view< imType > &image, double x0, double y0, double dx1, double dy1, double dx2, double dy2, int n1, int n2)
	Sample grid from image, using bicubic interpolation.

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Detailed Description

Bicubic grid sampling function for 2D images.

The vil bicub source files were derived from the corresponding vil bilin files, thus the vil bilin/bicub source files are very similar. If you modify something in this file, there is a corresponding bilin file that would likely also benefit from the same change.

Definition in file vil_sample_grid_bicub.h.

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Function Documentation

template<class imType , class vecType >

void vil_sample_grid_bicub	(	vecType *	v,
		const vil_image_view< imType > &	image,
		double	x0,
		double	y0,
		double	dx1,
		double	dy1,
		double	dx2,
		double	dy2,
		int	n1,
		int	n2
	)

Sample grid from image, using bicubic interpolation.

Grid points are (x0+i.dx1+j.dx2,y0+i.dy1+j.dy2), where i=[0..n1-1], j=[0..n2-1] Vector v is filled with n1*n2*np elements, where np=image.nplanes()*image.ncomponents() v[0]..v[np-1] are the values from point (x0,y0) Samples are taken along direction (dx2,dy2) first, then along (dx1,dy1). Points outside image return zero.

Sample grid from image, using bicubic interpolation.

Profile points are along the line between p0 and p1 (in image co-ordinates). Vector v is resized to n*np elements, where np=image.n_planes(). v[0]..v[np-1] are the values from point p Points outside image return zero.

Definition at line 33 of file vil_sample_grid_bicub.txx.