锐化算法

float Template_Sharpen_Laplacian[9]={-1.0f,-1.0f,-1.0f,-1.0f,9.0f,-1.0f,-1.0f,-1.0f,-1.0f};
//p 取3是锐化
void TemplateOperation(HWND hWnd,int P)
{  
DWORD              OffBits,BufSize;
    LPBITMAPINFOHEADER lpImgData;
LPSTR              lpPtr;
HLOCAL             hTempImgData;
LPBITMAPINFOHEADER lpTempImgData;
LPSTR              lpTempPtr;
HDC                hDc;
HFILE              hf;
LONG               x,y;
     float              coef;
float              CoefArray[9];
float              TempNum;
char               filename[80];
switch(P){
case 1:
coef=(float)(1.0/9.0);
memcpy(CoefArray,Template_Smooth_Box,9*sizeof(float));
strcpy(filename,"c:\\smbox.bmp");
break;
case 2:
coef=(float)(1.0/16.0);
memcpy(CoefArray,Template_Smooth_Gauss,9*sizeof(float));
strcpy(filename,"c:\\smgauss.bmp");
break;
    
case 3:
    coef=(float)1.0;
memcpy(CoefArray,Template_Sharpen_Laplacian,9*sizeof(float));
strcpy(filename,"c:\\sharpen.bmp");
break;
}
OffBits=bf.bfOffBits-sizeof(BITMAPFILEHEADER);
BufSize=bf.bfSize-sizeof(BITMAPFILEHEADER); if((hTempImgData=LocalAlloc(LHND,BufSize))==NULL)
    {
     MessageBox(hWnd,"Error alloc memory!","Error Message",MB_OK|MB_ICONEXCLAMATION);
      Y=FALSE;
    }    lpImgData=(LPBITMAPINFOHEADER)GlobalLock(hImgData);    
lpTempImgData=(LPBITMAPINFOHEADER)LocalLock(hTempImgData); lpPtr=(char *)lpImgData;
lpTempPtr=(char *)lpTempImgData; memcpy(lpTempPtr,lpPtr,BufSize); for(y=1;y<bi.biHeight-1;y++)
for(x=1;x<bi.biWidth-1;x++){
lpPtr=(char *)lpImgData+(BufSize-LineBytes-y*LineBytes)+x;
lpTempPtr=(char *)lpTempImgData+(BufSize-LineBytes-y*LineBytes)+x;
TempNum=(float)((unsigned char)*(lpPtr+LineBytes-1))*CoefArray[0];
TempNum+=(float)((unsigned char)*(lpPtr+LineBytes))*CoefArray[1];
TempNum+=(float)((unsigned char)*(lpPtr+LineBytes+1))*CoefArray[2];
TempNum+=(float)((unsigned char)*(lpPtr-1))*CoefArray[3];
TempNum+=(float)((unsigned char)*lpPtr)*CoefArray[4];
TempNum+=(float)((unsigned char)*(lpPtr+1))*CoefArray[5];
TempNum+=(float)((unsigned char)*(lpPtr-LineBytes-1))*CoefArray[6];
TempNum+=(float)((unsigned char)*(lpPtr-LineBytes))*CoefArray[7];
TempNum+=(float)((unsigned char)*(lpPtr-LineBytes+1))*CoefArray[8];
TempNum*=coef;
if(TempNum>255.0) *lpTempPtr=(BYTE)255;
else if(TempNum<0.0) 
*lpTempPtr=(unsigned char)fabs(TempNum);
else *lpTempPtr=(BYTE)TempNum;
// extern float aaaa[300][167];
   // aaaa[y][x]=(BYTE)TempNum;
} hDc=GetDC(hWnd);
    if(hBitmap!=NULL)
    DeleteObject(hBitmap);

hBitmap=CreateDIBitmap(hDc, (LPBITMAPINFOHEADER)lpTempImgData, (LONG)CBM_INIT,
(LPSTR)lpTempImgData+sizeof(BITMAPINFOHEADER) +NumColors*sizeof(RGBQUAD),
    (LPBITMAPINFO)lpTempImgData, DIB_RGB_COLORS); hf=_lcreat(filename,0);
_lwrite(hf,(LPSTR)&bf,sizeof(BITMAPFILEHEADER)); 
_lwrite(hf,(LPSTR)lpTempImgData,BufSize);
_llseek(hf,sizeof(BITMAPFILEHEADER),FILE_BEGIN);
_lclose(hf);  ReleaseDC(hWnd,hDc);
LocalUnlock(hTempImgData);
LocalFree(hTempImgData);
GlobalUnlock(hImgData);
Y=TRUE;
}