core/vil/algo/vil_gauss_filter.txx File Reference

smooth images More...

#include "vil_gauss_filter.h"
#include <vil/vil_transpose.h>
#include <vil/algo/vil_convolve_1d.h>
#include <vcl_iostream.h>
#include <vcl_cassert.h>

Go to the source code of this file.

Defines
#define	vil_gauss_filter_txx_
#define	VIL_GAUSS_FILTER_INSTANTIATE(srcT, destT)
Functions
unsigned char	vl_round (double x, unsigned char)
signed char	vl_round (double x, signed char)
double	vl_round (double x, double)
float	vl_round (double x, float)
template<class srcT , class destT >
void	vil_gauss_filter_5tap (const srcT *src_im, vcl_ptrdiff_t src_istep, vcl_ptrdiff_t src_jstep, destT *dest_im, vcl_ptrdiff_t dest_istep, vcl_ptrdiff_t dest_jstep, unsigned nx, unsigned ny, const vil_gauss_filter_5tap_params &params, destT *work, vcl_ptrdiff_t work_jstep)
	Smooth and subsample src_im to produce dest_im.
template<class srcT , class destT >
void	vil_gauss_filter_5tap (const vil_image_view< srcT > &src_im, vil_image_view< destT > &dest_im, const vil_gauss_filter_5tap_params &params, vil_image_view< destT > &work)
	Smooth a src_im to produce dest_im.

---

Detailed Description

smooth images

Author:

Ian Scott

Definition in file vil_gauss_filter.txx.

---

Define Documentation

#define VIL_GAUSS_FILTER_INSTANTIATE	(		srcT,
			destT
	)

Value:

template void vil_gauss_filter_5tap(const vil_image_view<srcT >& src_im, \
                                    vil_image_view<destT >& dest_im, \
                                    const vil_gauss_filter_5tap_params& params, \
                                    vil_image_view<destT >& work)

Definition at line 289 of file vil_gauss_filter.txx.

#define vil_gauss_filter_txx_

Definition at line 3 of file vil_gauss_filter.txx.

---

Function Documentation

template<class srcT , class destT >

void vil_gauss_filter_5tap	(	const srcT *	src_im,
		vcl_ptrdiff_t	src_istep,
		vcl_ptrdiff_t	src_jstep,
		destT *	dest_im,
		vcl_ptrdiff_t	dest_istep,
		vcl_ptrdiff_t	dest_jstep,
		unsigned	nx,
		unsigned	ny,
		const vil_gauss_filter_5tap_params &	params,
		destT *	work,
		vcl_ptrdiff_t	work_jstep
	)

Smooth and subsample src_im to produce dest_im.

Applies 5 pin filter in x and y, then samples every other pixel. Assumes dest_im has sufficient data allocated

Definition at line 36 of file vil_gauss_filter.txx.

template<class srcT , class destT >

void vil_gauss_filter_5tap	(	const vil_image_view< srcT > &	src_im,
		vil_image_view< destT > &	dest_im,
		const vil_gauss_filter_5tap_params &	params,
		vil_image_view< destT > &	work
	)

Smooth a src_im to produce dest_im.

Applies 5 element FIR filter in x and y.

Definition at line 144 of file vil_gauss_filter.txx.

unsigned long vl_round	(	double	x,
		unsigned	char
	)		[inline]

Definition at line 18 of file vil_gauss_filter.txx.

signed long vl_round	(	double	x,
		signed	char
	)		[inline]

Definition at line 19 of file vil_gauss_filter.txx.

double vl_round	(	double	x,
		double
	)		[inline]

Definition at line 26 of file vil_gauss_filter.txx.

float vl_round	(	double	x,
		float
	)		[inline]

Definition at line 27 of file vil_gauss_filter.txx.