Question

MFC中HBITMAP如何转化成opencv的IplImage格式呢？最好能有详细的代码。

Answer 1

IplImage* CShowImage1::hBitmapToIpl(HBITMAP hBmp)
{
BITMAP bmp;

GetObject(hBmp,sizeof(BITMAP),&bmp);

int nChannels = bmp.bmBitsPixel == 1 ? 1 : bmp.bmBitsPixel/8 ;

int depth = bmp.bmBitsPixel == 1 ? IPL_DEPTH_1U : IPL_DEPTH_8U;

IplImage* img = cvCreateImage(cvSize(bmp.bmWidth,bmp.bmHeight),depth,nChannels);

BYTE *pBuffer = new BYTE[bmp.bmHeight*bmp.bmWidth*nChannels];

GetBitmapBits(hBmp,bmp.bmHeight*bmp.bmWidth*nChannels,pBuffer);

memcpy(img->imageData,pBuffer,bmp.bmHeight*bmp.bmWidth*nChannels);
delete pBuffer;

IplImage *dst = cvCreateImage(cvGetSize(img),img->depth,3);

cvCvtColor(img,dst,CV_BGRA2BGR);
cvReleaseImage(&img);

return dst;
}