如何将cv::Mat转换为MFC CBitmap

Question

如何将OpenCV映像转换为(MFC) CBitmap对象？

我试过了，但失败了，

    cv::Mat tmp;
    (Load opencv image ...)

    cv::Size size = tmp.size();
    CBitmap bitmap;
    // 3 colors (RGB), 24bits (8bits*3channels) 
    if (!bitmap.CreateBitmap(128, 128, 1, 24, (void *)tmp.data)) {
        TRACE0("Failed to create bitmap for image display\n");
        return;
    }

这会产生一个黑色的图像..。

Answer 1

这个职位共享将IplImage转换为CBitmap的方法

CBitmap* IplImageToCBitmap(IplImage* img) 
{
    CDC dc;
    CDC memDC;

    if (!dc.CreateDC("DISPLAY", NULL, NULL, NULL))
        return NULL;

    if (!memDC.CreateCompatibleDC(&dc))
        return NULL;

    CBitmap* bmp = new CBitmap();
    CBitmap* pOldBitmap;

    bmp->CreateCompatibleBitmap(&dc, img->width, img->height);
    pOldBitmap = memDC.SelectObject(bmp);

    CvvImage cvImage; // you will need OpenCV_2.2.0- to use CvvImage 
    cvImage.CopyOf(img);
    cvImage.Show(memDC.m_hDC, 0, 0, img->width, img->height, 0, 0);
    cvImage.Destroy();

    memDC.SelectObject(pOldBitmap);
    memDC.DeleteDC();
    dc.DeleteDC();

    return bmp;
}

基于此，您可以通过如下调用来实现您的目标：

cv::Mat aMat;
CBitmap *aCBitmap = IplImageToCBitmap((IplImage*) &aMat);