gaussian_conv_deriche.h File Reference

Deriche's approximation of Gaussian convolution. More...

Detailed Description

Deriche's approximation of Gaussian convolution.

Author

Pascal Getreuer getre.nosp@m.uer@.nosp@m.cmla..nosp@m.ens-.nosp@m.cacha.nosp@m.n.fr

Copyright (c) 2012-2013, Pascal Getreuer All rights reserved.

This program is free software: you can redistribute it and/or modify it under, at your option, the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version, or the terms of the simplified BSD license.

You should have received a copy of these licenses along with this program. If not, see http://www.gnu.org/licenses/ and http://www.opensource.org/licenses/bsd-license.html.

Definition in file gaussian_conv_deriche.h.

#include "num.h"

Go to the source code of this file.

Data Structures
struct	deriche_coeffs
	Coefficients for Deriche Gaussian approximation. More...

Macros
#define	DERICHE_MIN_K   2
	Minimum Deriche filter order.
#define	DERICHE_MAX_K   4
	Maximum Deriche filter order.
#define	DERICHE_VALID_K(K)   (DERICHE_MIN_K <= (K) && (K) <= DERICHE_MAX_K)
	Test whether a given K value is a valid Deriche filter order.

Typedefs
typedef struct deriche_coeffs	deriche_coeffs
	Coefficients for Deriche Gaussian approximation. More...

Functions
void	deriche_precomp (deriche_coeffs *c, double sigma, int K, num tol)
	Precompute coefficients for Deriche's Gaussian approximation. More...
void	deriche_gaussian_conv (deriche_coeffs c, num *dest, num *buffer, const num *src, long N, long stride)
	Deriche Gaussian convolution. More...
void	deriche_gaussian_conv_image (deriche_coeffs c, num *dest, num *buffer, const num *src, int width, int height, int num_channels)
	Deriche Gaussian 2D convolution. More...