pnsr.cpp

可以选择各种压缩方式对读入的图像进行压缩和解压

#include "stdafx.h"
#include "pnsr.h"

long double imgpnsr(ptype **P, ptype **P2, unsigned int height, unsigned int width){
//int pxmax=0;
//for(int i=0;i<=m;i++)
//{
//	for(int j=0;j<=n;j++)
//	{		
//			pxmax=max(pxmax,P[i][j]);		
//	}
//}
	unsigned long temp=0;
	//cout<<temp<<endl;
	for(unsigned int i=0;i<height; i++)
		for(unsigned int j=0;j<width; j++)		
				temp+=(P[i][j]-P2[i][j])*(P[i][j]-P2[i][j]);		
	
	//cout<<m<<endl<<n<<endl;
	//cout<<temp<<endl;
	long double pnsr=10.0*log10(long double(255*255*height*width/temp));
	//cout<<pnsr<<endl;
	return pnsr;
}

void testpnsr(){
	//double pnsr;
	//pnsr=imgpnsr();
	//cout<<pnsr<<endl;
}