急求摄像头采集到的位图图象保存的代码!!!

Question

摄像头采集并保存成位图的代码!!!
高手指教!!

Answer 1

最好用vfw,
directx也行.
希望有清晰解释的代码.

Answer 2

BITMAPINFO bmpi;// bitmap格式
bmpi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmpi.bmiHeader.biWidth = w;
bmpi.bmiHeader.biHeight = h;
bmpi.bmiHeader.biSizeImage = w * h * 3;
bmpi.bmiHeader.biPlanes = 1;
bmpi.bmiHeader.biBitCount = 24; FILE *fp = fopen(szFileName,"wb"); //注意要以二进制打开
if(fp) {
BITMAPFILEHEADER bfh;
bfh.bfType = 0x4d42;  //(WORD)('M' << 8 | 'B');
bfh.bfSize =  sizeof(BITMAPFILEHEADER) + 
  bmpi.bmiHeader.biSize + bmpi.bmiHeader.biSizeImage;
bfh.bfReserved1 = bfh.bfReserved2 = 0;
bfh.bfOffBits = (DWORD) sizeof(BITMAPFILEHEADER) + bmpi.bmiHeader.biSize;
fwrite((LPVOID) &bfh, sizeof(BITMAPFILEHEADER), 1, fp); // header
fwrite((LPVOID) &bmpi, bmpi.bmiHeader.biSize, 1, fp);
fwrite((LPVOID) pVideoData, bmpi.bmiHeader.biSizeImage, 1, fp); // data
fclose(fp);
}

Answer 3

楼上,我采集到的是单帧句柄m_hbmp,
怎么保存位图?

Answer 4

上面的方法就可以了  阿楼主得到的是什么样格式的图片？
rgb的都可以阿

Answer 5

应该是24位图
capGrabFrame(hWndC); // simple macro that sample a single frame from the 
                        // camera.
     capEditCopy(hWndC);  // simple macro that edit a copy of the frame.
     OpenClipboard();     //like virtual memory.
 
      //m_hBmp is a Handle to Bitmap.
     m_hCaptureBmp = (HBITMAP)::GetClipboardData(CF_BITMAP); 
     CloseClipboard();
 
     m_CaptureBmp.Detach();       //cleaning the bitmap.
     m_CaptureBmp.Attach(m_hCaptureBmp); //connecting the bitmap throw the handle.

Answer 6

我怎么得到楼上代码中的pVideoData?

Answer 7

写一个回调函数 capSetCallbackOnFrame(m_hWndCapture,FrameCallBack);LRESULT CALLBACK FrameCallBack(HWND hWnd, LPVIDEOHDR lpVHdr)
{
    //pVideoData 即 lpVHdr->lpData
}

Answer 8

BITMAPINFO m_InInfo;
m_InInfo.bmiHeader.biBitCount=8;
m_InInfo.bmiHeader.biClrImportant=m_InInfo.bmiHeader.biClrUsed=0;
m_InInfo.bmiHeader.biCompression=BI_RGB;
m_InInfo.bmiHeader.biHeight=240;
m_InInfo.bmiHeader.biPlanes=1;
m_InInfo.bmiHeader.biSize=0;
m_InInfo.bmiHeader.biSizeImage=0;
m_InInfo.bmiHeader.biWidth=320;
m_InInfo.bmiHeader.biXPelsPerMeter=m_InInfo.bmiHeader.biYPelsPerMeter=0; m_hWndCapture = capCreateCaptureWindow("capture window",WS_VISIBLE|WS_CHILD
,0,0,320,240,this->GetSafeHwnd(),0);
capDriverConnect(m_hWndCapture,0);
capSetVideoFormat(m_hWndCapture,&m_InInfo,sizeof(BITMAPINFO));
capPreviewRate(m_hWndCapture,40);
capPreview(m_hWndCapture,TRUE);
capSetCallbackOnFrame(m_hWndCapture,FrameCallBack); //FrameCallBack is the function nameLRESULT CALLBACK FrameCallBack(HWND hWnd, LPVIDEOHDR lpVHdr)
{
CDib dib;
BITMAPINFOHEADER m_InInfo;
m_InInfo.biBitCount=24;
m_InInfo.biClrImportant=m_InInfo.biClrUsed=0;
m_InInfo.biCompression=BI_RGB;
m_InInfo.biHeight=240;
m_InInfo.biPlanes=1;
m_InInfo.biSize=sizeof(BITMAPINFOHEADER);
m_InInfo.biSizeImage=320*240*3;
m_InInfo.biWidth=320;
m_InInfo.biXPelsPerMeter=m_InInfo.biYPelsPerMeter=0; dib.SetBitmapInfoHeader(&m_InInfo);
dib.SetDibData(CaptureData);
dib.SaveDib("C:\\d.bmp");  
}
用到了CDib类  如果你没有 我可以发你邮箱一份

Answer 9

FrameCallBack() 不是某个类的成员函数  要先声明后调用   或者定义在调用之前