如何将cv :: Mat转换为MFC CBitmap

Question

如何将OpenCV图像转换为Microsoft基础类（MFC）CBitmap对象？

我尝试以下，其失败，

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; 
    } 

这导致黑色图像..

Answer 1

This post股的IplImage到CBitmap转换的方法，包括：

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; 
} 

基于在此，您可以通过如下方式实现您的目标：

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