vil_sample_profile_bilin.h File Reference

Bilinear profile sampling functions 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_profile_bilin (vecType *v, const vil_image_view< imType > &image, double x0, double y0, double dx, double dy, int n)
	Sample along profile, using bilinear interpolation. More...
template<class imType , class vecType >
void	vil_sample_profile_bilin_edgena (vecType *v, const vil_image_view< imType > &image, double x0, double y0, double dx, double dy, int n)
	Sample along profile, using bilinear interpolation. More...

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_profile_bilin.h.

Function Documentation

vil_sample_profile_bilin()

template<class imType , class vecType >

void vil_sample_profile_bilin	(	vecType *	v,
		const vil_image_view< imType > &	image,
		double	x0,
		double	y0,
		double	dx,
		double	dy,
		int	n
	)

Sample along profile, using bilinear interpolation.

Profile points are (x0+i.dx,y0+i.dy), where i=[0..n-1]. Vector v is filled with n*np elements, where np=image.nplanes()*image.ncomponents() v[0]..v[np-1] are the values from point (x0,y0) Points outside image return zero.

Sample along profile, 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 39 of file vil_sample_profile_bilin.hxx.

vil_sample_profile_bilin_edgena()

template<class imType , class vecType >

void vil_sample_profile_bilin_edgena	(	vecType *	v,
		const vil_image_view< imType > &	image,
		double	x0,
		double	y0,
		double	dx,
		double	dy,
		int	n
	)

Sample along profile, using bilinear interpolation.

Profile points are (x0+i.dx,y0+i.dy), where i=[0..n-1]. Vector v is filled with n*np elements, where np=image.nplanes()*image.ncomponents() v[0]..v[np-1] are the values from point (x0,y0) Points outside image return NA.

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 97 of file vil_sample_profile_bilin.hxx.