core/vil/vil_sample_grid_bilin.txx File Reference

Bilinear profile sampling functions for 2D images. More...

#include "vil_sample_grid_bilin.h"
#include <vil/vil_bilin_interp.h>

Go to the source code of this file.

Defines
#define	vil_sample_grid_bilin_txx_
#define	VIL_SAMPLE_GRID_BILIN_INSTANTIATE(imType, vecType)
Functions
bool	vil_grid_bilin_corner_in_image (double x0, double y0, const vil_image_view_base &image)
	This function should not be the same in bicub and bilin.
template<class imType , class vecType >
void	vil_sample_grid_bilin (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 along profile, using safe bilinear interpolation.
template<class imType , class vecType >
void	vil_sample_grid_bilin_edgena (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 along profile, using safe bilinear interpolation.

---

Detailed Description

Bilinear profile sampling functions for 2D images.

Author:

Tim Cootes

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 bicub file that would likely also benefit from the same change.

Definition in file vil_sample_grid_bilin.txx.

---

Define Documentation

#define VIL_SAMPLE_GRID_BILIN_INSTANTIATE	(		imType,
			vecType
	)

Value:

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

Definition at line 187 of file vil_sample_grid_bilin.txx.

#define vil_sample_grid_bilin_txx_

Definition at line 3 of file vil_sample_grid_bilin.txx.

---

Function Documentation

bool vil_grid_bilin_corner_in_image	(	double	x0,
		double	y0,
		const vil_image_view_base &	image
	)		[inline]

This function should not be the same in bicub and bilin.

Definition at line 19 of file vil_sample_grid_bilin.txx.

template<class imType , class vecType >

void vil_sample_grid_bilin	(	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 along profile, using safe bilinear interpolation.

Sample grid from image, using bilinear 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 34 of file vil_sample_grid_bilin.txx.

template<class imType , class vecType >

void vil_sample_grid_bilin_edgena	(	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 along profile, using safe bilinear interpolation.

Sample grid from image, using bilinear 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 NA.

Definition at line 115 of file vil_sample_grid_bilin.txx.