image.cpp

本压缩软件有vc++图象处理编程的源代码

	
	}
	catch(CException *pe){
		pe->Delete();
		dibDst.Free();
		
	}
	return *this;
	
}
void CImage::Four2eight()//四邻域向八邻域的转化函数，使图像为单像素

{
	for(int i=1;i<GetHeight();i++)
	{
	  for(int j=1;j<GetWidth();j++)
	  {
		
	      if (GetPixelColor(i,j)==RGB(255,255,255))
		  {
		      if ((GetPixelColor(i,j+1)==RGB(255,255,255))&&(GetPixelColor(i+1,j)==RGB(255,255,255)))
			      SetPixelColor(i,j,RGB(0,0,0));
	          if ((GetPixelColor(i,j+1)==RGB(255,255,255))&&(GetPixelColor(i-1,j)==RGB(255,255,255)))
			      SetPixelColor(i,j,RGB(0,0,0));
		      if ((GetPixelColor(i,j-1)==RGB(255,255,255))&&(GetPixelColor(i+1,j)==RGB(255,255,255)))
			      SetPixelColor(i,j,RGB(0,0,0));
		      if ((GetPixelColor(i,j-1)==RGB(255,255,255))&&(GetPixelColor(i-1,j)==RGB(255,255,255)))
			      SetPixelColor(i,j,RGB(0,0,0));
		  }
	  }
	}

}





void CImage::ErZhi(int value)//二值化函数，value为域值
{
	 for (long i=1;i<GetHeight();i++)
	{
		for (long j=1;j<GetWidth();j++)
		{
			if(GetRedValue(i,j)<=value)
				SetPixelColor(i,j,RGB(0,0,0));
			else
				SetPixelColor(i,j,RGB(255,255,255));
				
	

		}
	}

}
void CImage::HuiDuHua()//灰度化函数
{
	for(long i=1;i<GetHeight();i++)
	{
		for (long j=1;j<GetWidth();j++)

		{
            
	       
            int rg;
			rg=(GetRedValue(i,j)+GetGreenValue(i,j)+GetBlueValue(i,j))/3;
           
		    SetPixelColor(i,j,RGB(rg,rg,rg));
		}
		
	}
	



}

void CImage::FuShi()//腐蚀操作
{
	
	
	CImage tempimage2;////重点地方，this指针指向mm;
	tempimage2=*this;
  
  
   for (int i=1;i<GetHeight();i++)
	{
		for (int j=1;j<GetWidth();j++)
		{
		if(GetPixelColor(i-1,j-1)==RGB(255,255,255)&&GetPixelColor(i-1,j)==RGB(255,255,255)
			&&GetPixelColor(i-1,j+1)==RGB(255,255,255)&&GetPixelColor(i,j-1)==RGB(255,255,255)
			&&GetPixelColor(i,j)==RGB(255,255,255)&&GetPixelColor(i,j+1)==RGB(255,255,255)
			&&GetPixelColor(i+1,j-1)==RGB(255,255,255)&&GetPixelColor(i+1,j)==RGB(255,255,255)
			&&GetPixelColor(i+1,j+1)==RGB(255,255,255))
		
			tempimage2.SetPixelColor(i,j,RGB(255,255,255));
		else
			tempimage2.SetPixelColor(i,j,RGB(0,0,0));


		}
	}
   *this=tempimage2;
	
}

void CImage::BianYanTiQu()
{
		CImage tempimage1;
		tempimage1=*this;
	for (int i=1;i<GetHeight();i++)  //第一次腐蚀
	{
		for (int j=1;j<GetWidth();j++)
		{
		if(GetPixelColor(i-1,j-1)==RGB(255,255,255)&&GetPixelColor(i-1,j)==RGB(255,255,255)
			&&GetPixelColor(i-1,j+1)==RGB(255,255,255)&&GetPixelColor(i,j-1)==RGB(255,255,255)
			&&GetPixelColor(i,j)==RGB(255,255,255)&&GetPixelColor(i,j+1)==RGB(255,255,255)
			&&GetPixelColor(i+1,j-1)==RGB(255,255,255)&&GetPixelColor(i+1,j)==RGB(255,255,255)
			&&GetPixelColor(i+1,j+1)==RGB(255,255,255))
		
			tempimage1.SetPixelColor(i,j,RGB(255,255,255));
		else
			tempimage1.SetPixelColor(i,j,RGB(0,0,0));//第一次腐蚀的结果为tempimage1


		}
	}
	CImage tempimage2;
	tempimage2=tempimage1;
	for (int m=1;m<GetHeight();m++)  //第二次作腐蚀结果为tempimage2
	{
		for (int n=1;n<GetWidth();n++)
		{
		if(tempimage1.GetPixelColor(m-1,n-1)==RGB(255,255,255)&&tempimage1.GetPixelColor(m-1,n)==RGB(255,255,255)
			&&tempimage1.GetPixelColor(m-1,n+1)==RGB(255,255,255)&&tempimage1.GetPixelColor(m,n-1)==RGB(255,255,255)
			&&tempimage1.GetPixelColor(m,n)==RGB(255,255,255)&&tempimage1.GetPixelColor(m,n+1)==RGB(255,255,255)
			&&tempimage1.GetPixelColor(m+1,n-1)==RGB(255,255,255)&&tempimage1.GetPixelColor(m+1,n)==RGB(255,255,255)
			&&tempimage1.GetPixelColor(m+1,n+1)==RGB(255,255,255))
		
			tempimage2.SetPixelColor(m,n,RGB(255,255,255));
		else
			tempimage2.SetPixelColor(m,n,RGB(0,0,0));


		}
	}
	
	//两次腐蚀的结果作差
   for (int a=1;a<GetHeight();a++)
	{
		for (int b=1;b<GetWidth();b++)
		{
		 SetPixelColor(a,b,(tempimage1.GetPixelColor(a,b)-tempimage2.GetPixelColor(a,b)));
		}
	}



}

COMPLEX CImage::ComplexAdd(COMPLEX c1, COMPLEX c2)
{
	COMPLEX c;
	c.re=c1.re+c2.re;
	c.im=c1.im+c2.im;
	return c;
}

COMPLEX CImage::ComplexSub(COMPLEX c1, COMPLEX c2)
{
	COMPLEX c;
	c.re=c1.re-c2.re;
	c.im=c1.im-c2.im;
	return c;
}

COMPLEX CImage::ComplexMul(COMPLEX c1, COMPLEX c2)
{
	COMPLEX c;
	c.re=c1.re*c2.re-c1.im*c2.im;
	c.im=c1.re*c2.im+c1.im*c2.re;
	return c;

}
/* TD为输入的时域值(此处为实数)，FD为输出的频域值，Power为变换点的2的幂数*/
void CImage::FFT(COMPLEX *TD, COMPLEX *FD,int power)
{
	int count;
	int i,j,k,bfsize,p;
	double angle;
	COMPLEX *w,*x1,*x2,*x;
	/*计算傅立叶变换的点数*/
	count=1<<power;
	/*分配运算所需的存储器*/
	w=(COMPLEX*)malloc(sizeof(COMPLEX)*count/2);
	x1=(COMPLEX*)malloc(sizeof(COMPLEX)*count);
	x2=(COMPLEX*)malloc(sizeof(COMPLEX)*count);
	/*计算加权系数*/
	for(i=0;i<count/2;i++)
	{
		angle=-i*pi*2/count;
		w[i].re=cos(angle);
		w[i].im=sin(angle);
	}
	/*将时域点写入存储器*/
	/*因为时域点一般都是实数值，所以在此把他变为负数形式*/
	/*COMPLEX *TDC;
	TDC=(COMPLEX*)malloc(sizeof(COMPLEX)*count);
	for(int m=1;m<count;m++)
	{
        TDC[m].re=TD[m];
		TDC[m].im=0;
	}*/
	memcpy(x1,TD,sizeof(COMPLEX)*count);
	/*蝶形计算*/
	for(k=0;k<power;k++)
	{
		for(j=0;j<1<<k;j++)
		{
			bfsize=1<<(power-k);
			for(i=0;i<bfsize/2;i++)
			{
				p=j*bfsize;
				x2[i+p]=ComplexAdd(x1[i+p],x1[i+p+bfsize/2]);
				x2[i+p+bfsize/2]=ComplexMul(ComplexSub(x1[i+p],x1[i+p+bfsize/2]),w[i*(1<<k)]);
			}
		}
		x=x1;
		x1=x2;
		x2=x;
	}
	/*重新排序*/
	for(j=0;j<count;j++)
	{
		p=0;
		for(i=0;i<power;i++)
		{
			if(j&(1<<i))
			p+=1<<(power-i-1);

		}
		FD[j]=x1[p];
	}
	free(w);
	free(x1);
	free(x2);
    
	

}

void CImage::IFFT(COMPLEX *FD, COMPLEX *TD, int power)
{
	int i,count;
	COMPLEX *x;
	/*计算傅立叶反变换的点数*/
	count=1<<power;
	/*分配运算所需的存储器*/
	x=(COMPLEX*)malloc(sizeof(COMPLEX)*count);
	/*将频域点写入存储器*/
	memcpy(x,FD,sizeof(COMPLEX)*count);
	/*求频域点的共轭*/
	for(i=0;i<count;i++)
	{
		x[i].im=-x[i].im;

	}
	/*调用快速傅立叶变换*/
	FFT(x,TD,power);
	/*求时域点的共轭*/
	for(i=0;i<count;i++)
	{
		TD[i].re/=count;
		TD[i].im=-TD[i].im/count;

	}
	/*释放存储器*/
	free(x);

}



void CImage::PengZhang()
{
	CImage tempimage2;////重点地方，this指针指向mm;
	tempimage2=*this;
  
  
   for (int i=1;i<GetHeight();i++)
	{
		for (int j=1;j<GetWidth();j++)
		{
		if(GetPixelColor(i-1,j-1)==RGB(255,255,255)||GetPixelColor(i-1,j)==RGB(255,255,255)
			||GetPixelColor(i-1,j+1)==RGB(255,255,255)||GetPixelColor(i,j-1)==RGB(255,255,255)
			||GetPixelColor(i,j)==RGB(255,255,255)||GetPixelColor(i,j+1)==RGB(255,255,255)
			||GetPixelColor(i+1,j-1)==RGB(255,255,255)||GetPixelColor(i+1,j)==RGB(255,255,255)
			||GetPixelColor(i+1,j+1)==RGB(255,255,255))
		
			tempimage2.SetPixelColor(i,j,RGB(255,255,255));
		else
			tempimage2.SetPixelColor(i,j,RGB(0,0,0));


		}
	}
   
	*this=tempimage2;


}

void CImage::OnOpen()
{
	FuShi();
	PengZhang();

}

void CImage::OnClose()
{
    PengZhang();
	FuShi();

}