libavutil/pca.c File Reference

principal component analysis (PCA) More...

#include "common.h"
#include "pca.h"

Go to the source code of this file.

Data Structures
struct	PCA
Defines
#define	ROTATE(a, i, j, k, l)
Functions
PCA *	ff_pca_init (int n)
void	ff_pca_free (PCA *pca)
void	ff_pca_add (PCA *pca, double *v)
int	ff_pca (PCA *pca, double *eigenvector, double *eigenvalue)

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Detailed Description

principal component analysis (PCA)

Definition in file pca.c.

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Define Documentation

#define ROTATE	(	a,
		i,
		j,
		k,
		l		)

Value:

{\
    double g=a[j + i*n];\
    double h=a[l + k*n];\
    a[j + i*n]=g-s*(h+g*tau);\
    a[l + k*n]=h+s*(g-h*tau); }

Referenced by ff_pca().

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Function Documentation

int ff_pca	(	PCA *	pca,
		double *	eigenvector,
		double *	eigenvalue
	)

Definition at line 69 of file pca.c.

void ff_pca_add	(	PCA *	pca,
		double *	v
	)

Definition at line 57 of file pca.c.

void ff_pca_free

(

PCA *

pca

)

Definition at line 51 of file pca.c.

PCA* ff_pca_init

(

int

n

)

[read]

Definition at line 37 of file pca.c.