matrix.h

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// Matrix.h: interface for the Matrix class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_MATRIX_H__30B7D888_BB9B_11D2_9B76_204C4F4F5020__INCLUDED_)
#define AFX_MATRIX_H__30B7D888_BB9B_11D2_9B76_204C4F4F5020__INCLUDED_

#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000
//#include <afx.h>

class matrix  
{
	friend matrix operator+(const matrix& x, const matrix& y);
	friend matrix operator-(const matrix& x, const matrix& y);
	friend matrix operator+(const matrix& x, double a);
	friend matrix operator+(double a, const matrix& x);
	friend matrix operator-(const matrix& x, double a); 
	friend matrix operator-(double a, const matrix& x);
	friend matrix operator*(const matrix& x, const matrix& y);
	friend matrix operator*(const matrix& x, double a);
	friend matrix operator*(double a, const matrix& x);
	friend matrix operator/(const matrix& x, double a); 
	friend matrix operator/(const matrix& x, const matrix& y);   // a ./ b
	friend matrix operator&(const matrix& x, const matrix& y);    // a .* b
	friend matrix operator|(const matrix& x, const matrix& y);  // convolve

public:
	int 	ysize,xsize;            	//number of rows(ysize) and columns(xsize)
	double 	**rowptr;					//pointer to rows
	double 	*elem;                    	//elements are double
	int     numbands;                   // 1 if gray image, 2 if vector field, 3 if color image
	
	//matrix(int k, int l);
	matrix(int k, int l, int n = 1);
	matrix(const matrix& a);
	matrix();
	~matrix();
	
	double* operator[](int k);
	double& operator()(int rowsize, int columnsize, int numbands = 0);
	double&	operator()(int k);
	
	matrix& operator=(const matrix& y);
	matrix&	operator+=(const matrix& y);
	matrix&	operator-=(const matrix& y);
	matrix&	operator+=(double a);
	matrix&	operator-=(double a);
	matrix&	operator*=(double a);
	matrix&	operator/=(double a); 

	void pstr(const matrix& a, int k);
	void pstc(const matrix& a, int k);
	
	void resize(int k,int l, int n = 0);
	
	void display(CString& message);
	void display(char *fname);
	void displayRGB(char *fname);
	matrix read(char *fname, int xsize, int ysize); 

	
	void decimate(int factor);
	void upsample(int factor);
	void qdecimate(int shft);
	void qupsample(int shft);

	matrix extractBand(int band);

};

#endif // !defined(AFX_MATRIX_H__30B7D888_BB9B_11D2_9B76_204C4F4F5020__INCLUDED_)