imcoarsen.c File Reference

Image coarsening utility program. More...

#include <math.h>
#include <string.h>
#include <ctype.h>
#include "imageio.h"

Include dependency graph for imcoarsen.c:

Go to the source code of this file.

Data Structures
struct	image
	struct representing an image More...
struct	programparams
	struct of program parameters More...

Macros
#define	VERBOSE   0
#define	NUMSTDS   4
	Approximate Gaussian with this number of standard deviations. More...

Enumerations
enum	boundaryhandling { BOUNDARY_CONSTANT = 0, BOUNDARY_HSYMMETRIC = 1, BOUNDARY_WSYMMETRIC = 2, BOUNDARY_PERIODIC = 3 }

Functions
int	ParseParams (programparams *Param, int argc, char *argv[])
	Parse command line parameters. More...
int	Coarsen (image v, image u, programparams Param)
void	PrintHelpMessage ()
	Print program usage help message. More...
int	main (int argc, char *argv[])
float	Sqr (float x)

Variables
int(*	ExtensionMethod [4])(int, int)

Detailed Description

Image coarsening utility program.

Author

Pascal Getreuer getre.nosp@m.uer@.nosp@m.gmail.nosp@m..com

This file implements the imcoarsen program, a command line tool for coarsening an image by Gaussain smoothing followed by downsampling. See the routine PrintHelpMessage for usage details.

Copyright (c) 2010-2011, Pascal Getreuer All rights reserved.

This program is free software: you can use, modify and/or redistribute it under the terms of the simplified BSD License. You should have received a copy of this license along this program. If not, see http://www.opensource.org/licenses/bsd-license.html.

Definition in file imcoarsen.c.

Macro Definition Documentation

#define NUMSTDS   4

Approximate Gaussian with this number of standard deviations.

Definition at line 29 of file imcoarsen.c.

#define VERBOSE   0

Definition at line 26 of file imcoarsen.c.

Enumeration Type Documentation

enum boundaryhandling

Enumerator
BOUNDARY_CONSTANT
BOUNDARY_HSYMMETRIC
BOUNDARY_WSYMMETRIC
BOUNDARY_PERIODIC

Definition at line 43 of file imcoarsen.c.

Function Documentation

int Coarsen	(	image	v,
		image	u,
		programparams	Param
	)

Definition at line 240 of file imcoarsen.c.

int main	(	int	argc,
		char *	argv[]
	)

Definition at line 100 of file imcoarsen.c.

static int ParseParams	(	programparams *	Param,
		int	argc,
		char *	argv[]
	)

Parse command line parameters.

Parameters

Param	struct to hold the program parameters
argc,argv	argument list received by main()

Returns

1 on success, 0 on failure

Definition at line 376 of file imcoarsen.c.

void PrintHelpMessage

(

)

Print program usage help message.

Definition at line 75 of file imcoarsen.c.

float Sqr

(

float

x

)

Definition at line 154 of file imcoarsen.c.

Variable Documentation

int(* ExtensionMethod[4])(int, int)

Initial value:

=
    {ConstExtension, HSymExtension, WSymExtension, PerExtension}

Definition at line 236 of file imcoarsen.c.