utils.h File Reference

Miscellaneous utility functions. More...

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Detailed Description

Miscellaneous utility functions.

Copyright (C) 2006 Rob Hess <hess@eecs.oregonstate.edu>

Version:

1.1.1-20070119

Definition in file utils.h.

Go to the source code of this file.

Defines
#define	ABS(x)   ( ( x < 0 )? -x : x )
Functions
static int	pixval8 (IplImage *img, int r, int c)
	A function to get a pixel value from an 8-bit unsigned image.
static void	setpix8 (IplImage *img, int r, int c, uchar val)
	A function to set a pixel value in an 8-bit unsigned image.
static float	pixval32f (IplImage *img, int r, int c)
	A function to get a pixel value from a 32-bit floating-point image.
static void	setpix32f (IplImage *img, int r, int c, float val)
	A function to set a pixel value in a 32-bit floating-point image.
static double	pixval64f (IplImage *img, int r, int c)
	A function to get a pixel value from a 64-bit floating-point image.
static void	setpix64f (IplImage *img, int r, int c, double val)
	A function to set a pixel value in a 64-bit floating-point image.
void	fatal_error (char *format,...)
	Prints an error message and aborts the program.
int	array_double (void **array, int n, int size)
	Doubles the size of an array with error checking.

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Function Documentation

int array_double	(	void **	array,
		int	n,
		int	size
	)

Doubles the size of an array with error checking.

Parameters:

array	pointer to an array whose size is to be doubled
n	number of elements allocated for array
size	size in bytes of elements in array

Returns:

Returns the new number of elements allocated for array. If no memory is available, returns 0 and frees array.

void fatal_error	(	char *	format,
			...
	)

Prints an error message and aborts the program.

The error message is of the form "Error: ...", where the ... is specified by the format argument

Parameters:

format

an error message format string (as with printf(3)).

static float pixval32f	(	IplImage *	img,
		int	r,
		int	c
	)		[inline, static]

A function to get a pixel value from a 32-bit floating-point image.

Parameters:

img	an image
r	row
c	column

Returns:

Returns the value of the pixel at (r, c) in img

Definition at line 62 of file utils.h.

static double pixval64f	(	IplImage *	img,
		int	r,
		int	c
	)		[inline, static]

A function to get a pixel value from a 64-bit floating-point image.

Parameters:

img	an image
r	row
c	column

Returns:

Returns the value of the pixel at (r, c) in img

Definition at line 90 of file utils.h.

static int pixval8	(	IplImage *	img,
		int	r,
		int	c
	)		[inline, static]

A function to get a pixel value from an 8-bit unsigned image.

Parameters:

img	an image
r	row
c	column

Returns:

Returns the value of the pixel at (r, c) in img

Definition at line 34 of file utils.h.

static void setpix32f	(	IplImage *	img,
		int	r,
		int	c,
		float	val
	)		[inline, static]

A function to set a pixel value in a 32-bit floating-point image.

Parameters:

img	an image
r	row
c	column
val	pixel value

Definition at line 76 of file utils.h.

static void setpix64f	(	IplImage *	img,
		int	r,
		int	c,
		double	val
	)		[inline, static]

A function to set a pixel value in a 64-bit floating-point image.

Parameters:

img	an image
r	row
c	column
val	pixel value

Definition at line 104 of file utils.h.

static void setpix8	(	IplImage *	img,
		int	r,
		int	c,
		uchar	val
	)		[inline, static]

A function to set a pixel value in an 8-bit unsigned image.

Parameters:

img	an image
r	row
c	column
val	pixel value

Definition at line 48 of file utils.h.