core/vil/vil_bicub_interp.txx File Reference

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Detailed Description

Bicubic interpolation functions 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.

In this particular case, there is no corresponding vil_bilin_interp.txx file, see vil_bilin_interp.h instead.

Definition in file vil_bicub_interp.txx.

#include "vil_bicub_interp.h"
#include <vcl_compiler.h>

Go to the source code of this file.

Defines
#define	vil_I(dx, dy)   (pix1[(dx)*xstep+(dy)*ystep])
#define	vil_I(dx, dy)   (pix1[(dx)*xstep+(dy)*ystep])
#define	VIL_BICUB_INTERP_INSTANTIATE(T)
Functions
template<class T>
double	vil_bicub_interp_unsafe (double x, double y, const T *data, vcl_ptrdiff_t xstep, vcl_ptrdiff_t ystep)
	Compute bicubic interpolation at (x,y), no bound checks. Requires 1<x<ni-3, 1<y<nj-3.
template<class T>
double	vil_bicub_interp_raw (double x, double y, const T *data, vcl_ptrdiff_t xstep, vcl_ptrdiff_t ystep)
	Compute bicubic interpolation at (x,y), no bound checks.

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Define Documentation

#define VIL_BICUB_INTERP_INSTANTIATE

(

T

)

Value:

template double \
vil_bicub_interp_unsafe (double x, double y, const T* data, \
                         vcl_ptrdiff_t xstep, vcl_ptrdiff_t ystep); \
template double \
vil_bicub_interp_raw (double x, double y, const T* data, \
                      vcl_ptrdiff_t xstep, vcl_ptrdiff_t ystep)

Definition at line 158 of file vil_bicub_interp.txx.

#define vil_I	(	dx,
		dy		)	(pix1[(dx)*xstep+(dy)*ystep])

#define vil_I	(	dx,
		dy		)	(pix1[(dx)*xstep+(dy)*ystep])

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Function Documentation

template<class T>

double vil_bicub_interp_raw	(	double	x,
		double	y,
		const T *	data,
		vcl_ptrdiff_t	xstep,
		vcl_ptrdiff_t	ystep
	)

Compute bicubic interpolation at (x,y), no bound checks.

Image is nx * ny array of Ts. x,y element is data[xstep*x+ystep*y] No bound checks are done.

Definition at line 73 of file vil_bicub_interp.txx.

template<class T>

double vil_bicub_interp_unsafe	(	double	x,
		double	y,
		const T *	data,
		vcl_ptrdiff_t	xstep,
		vcl_ptrdiff_t	ystep
	)

Compute bicubic interpolation at (x,y), no bound checks. Requires 1<x<ni-3, 1<y<nj-3.

Image is nx * ny array of Ts. x,y element is data[xstep*x+ystep*y] No bound checks are done.

Definition at line 28 of file vil_bicub_interp.txx.

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