libAuxiliary.h File Reference

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <cmath>
#include <time.h>
#include <unistd.h>

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Defines
#define	LUTMAX   30.0
#define	LUTMAXM1   29.0
#define	LUTPRECISION   1000.0
#define	MAX(i, j)   ( (i)<(j) ? (j):(i) )
#define	MIN(i, j)   ( (i)<(j) ? (i):(j) )
#define	fTiny   0.00000001f
#define	COEFF_YR   0.299
#define	COEFF_YG   0.587
#define	COEFF_YB   0.114
Functions
void	wxRgb2Yuv (float *r, float *g, float *b, float *y, float *u, float *v, int width, int height)
	RGV to YUV standard conversion.
void	wxYuv2Rgb (float *r, float *g, float *b, float *y, float *u, float *v, int width, int height)
	YUV to RGB standard conversion.
void	wxCopy (float *tpI, float *tpO, int ilength)
	Make a copy of float vector.
float	l2_distance_r1 (float *u0, int i0, int j0, int i1, int j1, int width)
	Compute Euclidean distance of a 3x3 patch centered at (i0,j0), (u1,j1) of the same image.
void	sFillLut (float *lut, int size)
	Tabulate Exp(-x).
float	sLUT (float dif, float *lut)
	Compute Exp(-x).
void	wxMedian (float *u, float *v, float fRadius, int inIter, int iWidth, int iHeight)
	Sliding window iterated median filter.
void	QuickSortFloat (float *arr, int ilength)
	Standard Quicksort. Orders float array in increasing order.

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Define Documentation

#define COEFF_YB   0.114

Definition at line 50 of file libAuxiliary.h.

#define COEFF_YG   0.587

Definition at line 49 of file libAuxiliary.h.

#define COEFF_YR   0.299

Definition at line 48 of file libAuxiliary.h.

#define fTiny   0.00000001f

Definition at line 45 of file libAuxiliary.h.

#define LUTMAX   30.0

Definition at line 36 of file libAuxiliary.h.

#define LUTMAXM1   29.0

Definition at line 37 of file libAuxiliary.h.

#define LUTPRECISION   1000.0

Definition at line 38 of file libAuxiliary.h.

#define MAX	(	i,
		j		)	( (i)<(j) ? (j):(i) )

Definition at line 41 of file libAuxiliary.h.

#define MIN	(	i,
		j		)	( (i)<(j) ? (i):(j) )

Definition at line 42 of file libAuxiliary.h.

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Function Documentation

float l2_distance_r1	(	float *	u0,
		int	i0,
		int	j0,
		int	i1,
		int	j1,
		int	width
	)

Compute Euclidean distance of a 3x3 patch centered at (i0,j0), (u1,j1) of the same image.

Parameters:

[in]	u0	image
[in]	(i0,j0)	center of first window
[in]	(i1,j1)	center of second window
[in]	width	width of the image

Definition at line 171 of file libAuxiliary.cpp.

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void QuickSortFloat	(	float *	arr,
		int	ilength
	)

Standard Quicksort. Orders float array in increasing order.

Parameters:

[in]	arr	input array
[in]	ilength	length of the array
[out]	arr	output array

Definition at line 320 of file libAuxiliary.cpp.

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void sFillLut	(	float *	lut,
		int	size
	)

Tabulate Exp(-x).

Parameters:

[out]	lut	output table
[in]	size	size of the table

Definition at line 122 of file libAuxiliary.cpp.

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float sLUT	(	float	dif,
		float *	lut
	)

Compute Exp(-x).

Parameters:

[in]	dif	value of x
[in]	lut	table of Exp(-x)

Definition at line 142 of file libAuxiliary.cpp.

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void wxCopy	(	float *	tpI,
		float *	tpO,
		int	ilength
	)

Make a copy of float vector.

Parameters:

[in]	tpI	input vector
[out]	tpO	copy
[in]	ilength	length of the vector

Definition at line 102 of file libAuxiliary.cpp.

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void wxMedian	(	float *	u,
		float *	v,
		float	fRadius,
		int	inIter,
		int	iWidth,
		int	iHeight
	)

Sliding window iterated median filter.

Parameters:

[in]	u	input image
[out]	v	output image
[in]	inIter	number of iterations
[in]	fRadius	window of size (2*fRadius+1) x (2*fRadius+1)
[in]	iWidth,iHeight	size of the image

Definition at line 237 of file libAuxiliary.cpp.

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void wxRgb2Yuv	(	float *	r,
		float *	g,
		float *	b,
		float *	y,
		float *	u,
		float *	v,
		int	width,
		int	height
	)

RGV to YUV standard conversion.

Y = COEFF_YR * R + COEFF_YG * G + COEFF_YB * B

U = R - Y

V = B - Y

Parameters:

[in]	r,g,b	input image
[out]	y,u,v	yuv coordinates
[in]	width,height	size of the image

Definition at line 50 of file libAuxiliary.cpp.

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void wxYuv2Rgb	(	float *	r,
		float *	g,
		float *	b,
		float *	y,
		float *	u,
		float *	v,
		int	width,
		int	height
	)

YUV to RGB standard conversion.

Parameters:

[in]	y,u,v	yuv coordinates
[out]	r,g,b	ouput image
[in]	width,height	size of the image

Definition at line 75 of file libAuxiliary.cpp.

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