Stastics

Functions
unsigned int	CWO::Count (float a)
unsigned int	CWO::CountNonZero ()
virtual float	CWO::Average ()
	calculate the average of the real part
float	CWO::Average (int m, int n, int Sx, int Sy)
virtual float	CWO::Variance ()
	calculate the variance of the real part
float	CWO::Variance (int m, int n, int Sx, int Sy)
float	CWO::StdDev (int m, int n, int Sx, int Sy)
	calculate the standard deviation
virtual void	CWO::__MaxMin (cwoComplex *a, float *max, float *min, int *max_x=nullptr, int *max_y=nullptr, int *min_x=nullptr, int *min_y=nullptr)
float	CWO::Max (int *m=NULL, int *n=NULL)
	find maximum of the real part
float	CWO::Min (int *m=NULL, int *n=NULL)
	find minimum of the real part
int	CWO::MaxMin (float *max, float *min, int *max_x=nullptr, int *max_y=nullptr, int *min_x=nullptr, int *min_y=nullptr)
	find maxmum and minimum of the real part
void	CWO::VarianceMap (int sx, int sy)
	generate variance map
float	CWO::Histogram (int *hist, int N)
	generate histogram
virtual cwoComplex	CWO::TotalSum ()
	Calculate total sum of real part.

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Detailed Description

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Function Documentation

virtual float CWO::Average ( )

virtual

calculate the average of the real part

Parameters:

m	: coordinate of Region of Interest(ROI)
n	: coordinate of ROI
Sx	: ROI size
Sy	: ROI size

Returns:

average

Reimplemented in GWO.

virtual float CWO::Variance ( )

virtual

calculate the variance of the real part

Returns:

variance

Reimplemented in GWO.

float CWO::StdDev	(	int	m,
		int	n,
		int	Sx,
		int	Sy
	)

calculate the standard deviation

Returns:

standard deviation

float CWO::Max	(	int *	m = NULL,
		int *	n = NULL
	)

find maximum of the real part

Returns:

maximum

float CWO::Min	(	int *	m = NULL,
		int *	n = NULL
	)

find minimum of the real part

Returns:

minimum

int CWO::MaxMin	(	float *	max,
		float *	min,
		int *	max_x = nullptr,
		int *	max_y = nullptr,
		int *	min_x = nullptr,
		int *	min_y = nullptr
	)

find maxmum and minimum of the real part

   @param *max pointer to maxmim value
   @param *min pointer to minimum value
   @param *max_x pointer to maxmim value
   @param *max_y pointer to minimum value
   @param *min_x pointer to the location of maxmim value
   @param *min_y pointer to the location of minimum value
   @return reserved

        float max,min;
        CWO a;
        a.Load("test.bmp");
        a.MaxMin(&max,&min); //you can find max and min velues at the same time
        printf("max=%e min=%e\n",max,min); 

void CWO::VarianceMap	(	int	sx,
		int	sy
	)

generate variance map

Parameters:

sx
sy

Note:

VAriance map is useful for detecting in-focus reconstructed planes from a hologram.
Conor P. McElhinney, John B. McDonald, Albertina Castro, Yann Frauel, Bahram Javidi, and Thomas J. Naughton, "Depth-independent segmentation of macroscopic three-dimensional objects encoded in single perspectives of digital holograms," Opt. Lett. 32, 1229-1231 (2007)

float CWO::Histogram	(	int *	hist,
		int	N
	)

generate histogram

   @param hist  pointer to frequency whose buffer is required to prepare by myself  
   @param N  bin number 
   @return  bin width. 

        //sample code of generating kinoform.
        int N=256, hist[256];
        CWO a;
        a.Load("test.bmp");
        float bin_width=a.Histogram(hist,N);

virtual cwoComplex CWO::TotalSum ( )

virtual

Calculate total sum of real part.

Returns:

Total sum

Reimplemented in GWO.