Bicubic interpolation functions for 2D images. More...

#include "vil_bicub_interp.h"

Macros
#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, std::ptrdiff_t xstep, std::ptrdiff_t ystep)
	Compute bicubic interpolation at (x,y), no bound checks. Requires 1<x<ni-3, 1<y<nj-3. More...

template<class T >
double	vil_bicub_interp_raw (double x, double y, const T *data, std::ptrdiff_t xstep, std::ptrdiff_t ystep)
	Compute bicubic interpolation at (x,y), no bound checks. More...

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.hxx file, see vil_bilin_interp.h instead.

Definition in file vil_bicub_interp.hxx.

Macro Definition Documentation

◆ VIL_BICUB_INTERP_INSTANTIATE

#define VIL_BICUB_INTERP_INSTANTIATE ( T )

Value:

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

Definition at line 135 of file vil_bicub_interp.hxx.

◆ vil_I [1/2]

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

◆ vil_I [2/2]

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

Function Documentation

◆ vil_bicub_interp_raw()

template<class T >

double vil_bicub_interp_raw	(	double	x,
		double	y,
		const T *	data,
		std::ptrdiff_t	xstep,
		std::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 67 of file vil_bicub_interp.hxx.

◆ vil_bicub_interp_unsafe()