下面的function 可以把 IplImage 转 Bitmap
// - the IplImage "src" Image must have a IPL_DEPTH_8U depth // // and 1 or 3 channels // // - the convertion is done in regards to the ROI if it is set // // - if you want to stretch your TBitmap ,specify width and height before // // calling the function // bool __fastcall TForm1::IplImageToTBitmap(const IplImage *src,Graphics::TBitmap *dest){ if (!src || !dest) return false; IplImage *temp; CvRect roi; if (src->roi) roi=cvGetImageROI(src); else roi=cvRect(0,0,src->width,src->height); temp=cvCreateImage(cvSize(roi.width,roi.height),IPL_DEPTH_8U,3); if (src->nChannels!=3) cvCvtColor(src,temp,CV_GRAY2RGB); else cvCopy(src,temp); if (dest->Width==0 || dest->Height==0) { dest->Width = roi.width; dest->Height = roi.height; } else { IplImage *temp1=cvCloneImage(temp); cvReleaseImageData(temp); cvInitImageHeader(temp,cvSize(dest->Width,dest->Height),IPL_DEPTH_8U,3,src->origin,4); cvCreateImageData(temp); roi.width=dest->Width; roi.height=dest->Height; cvResize(temp1,temp); cvReleaseImage(&temp1); } dest->PixelFormat=pf24bit; try { unsigned char *pLine; int x,y; for(y=0 ;y<roi.height;y++) { pLine = (unsigned char *)dest->ScanLine[y]; for(x=0 ;x <roi.width*3 ;x++) { pLine[x]= ((unsigned char*)(temp->imageData + temp->widthStep*y))[x]; } } } catch(...) { ShowMessage("Error while converting ..."); } cvReleaseImage(&temp); return true; }//-------------------------------------------------------------------
下面的function 可以把 Bitmap 转 IplImage
IplImage* hBitmap2Ipl(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 = cvCreateImageHeader( cvSize(bmp.bmWidth, bmp.bmHeight), depth, nChannels ); img->imageData = (char*)malloc(bmp.bmHeight*bmp.bmWidth*nChannels*sizeof(char)); memcpy(img->imageData,(char*)(bmp.bmBits),bmp.bmHeight*bmp.bmWidth*nChannels);
return img;}
