juanji.rar_C++图像卷积_卷积_图像卷积_图像卷积处理_图像处理卷积

BOOL ConvoluteDIB(HDIB hDib,KERNEL *lpKernel,int Strength,int nKernelNum)

{

WaitCursorBegin();

HDIB hNewDib=NULL;

WORD wBitCount=DIBBitCount(hDib);

if(wBitCount!=24)

hNewDib=ConvertDIBFormat(hDib,24,NULL);

else

hNewDib=CopyHandle(hDib);

WORD wDIBHeight=(WORD)DIBHeight(hNewDib);

WORD wBytesPerLine=(WORD)BytesPerLine(hNewDib);

DWORD dwImageSize=wBytesPerLine*wDIBHeight;

HGLOBAL hFilteredBits=GlobalAlloc(GHND,dwImageSize);

if(!hFilteredBits)

{

WaitCursorEnd();

return FALSE;

}

LPBYTE lpDestImage=(LPBYTE)GlobalLock(hFilteredBits);

for(int k=0;k<nKernelNum;++k)

{

int r=0,g=0,b=0;

DoConvoluteDIB(&r,&g,&b,I,j,wBytesPerLine,lpDIBits,lpKernel+k);

if(r>red)

red=r;

if(g>green)

green=g;

if(b>blue)

blue=b;

LONG lOffset=PIXEL_OFFSET(i,j,wBytesPerLine);

BYTE OldB=*(lpDIBits+lOffset++);

BYTE OldG=*(lpDIBits+lOffset++);

BYTE OldR=*(lpDIBits+lOffset);

if(Strength!=10)

{

red=OldR+(((red-OldR)*Strength)/10);

green=OldG+(((green-OldG)*Strength)/10);

}

memcpy(lpDIBits,lpDestImage,dwImageSize);

GlobalFree(hFilteredBits);

GlobalUnlock(hNewDib);

HDIB hTmp=NULL;

if(wBitCount!=24)

hTmp=ConvertDIBFormat(hNewDib,wBitCount,NULL);

else

WaitCursorEnd();

return TRUE;

}

void DoConvoluteDIB(int *red,int *green,int *blue,int I,int j,WORD wBytesPerLine,

LPBYTE lpDIBits,KERNEL*lpKernel)

{

BYTE b[9],g[9],r[9];

LONG lOffset;