彻底解决显示Opencv中Mat图像到Mfc窗口问题图像处理

第一步，转换格式前预先获得待显示控件的大小，若相等则不做处理，若不等则首先改变Mat图像大小，再进行转换。

CRect rect; GetDlgItem(IDC_STATIC_SRC)->GetClientRect(&rect); cv::Size winSize(rect.right, rect.bottom); // Resize the source to the size of the destination image if necessary cv::Mat cvImgTmp(winSize, CV_8UC3); if (imgSrc.size() != winSize) { cv::resize(imgSrc, cvImgTmp, winSize); } else { cvImgTmp = imgSrc; }

第二步，将Mat图像转换成CImage格式

int Mat2CImage(Mat *mat, CImage &img) { if (!mat || mat->empty()) return -1; int nBPP = mat->channels() * 8; img.Create(mat->cols, mat->rows, nBPP); if (nBPP == 8) { static RGBQUAD pRGB[256]; for (int i = 0; i < 256; i++) pRGB[i].rgbBlue = pRGB[i].rgbGreen = pRGB[i].rgbRed = i; img.SetColorTable(0, 256, pRGB); } uchar* psrc = https://www.it610.com/article/mat->data; uchar* pdst = (uchar*)img.GetBits(); int imgPitch = img.GetPitch(); for (int y = 0; y < mat->rows; y++) { memcpy(pdst, psrc, mat->cols*mat->channels()); //mat->step is incorrect for those images created by roi (sub-images!) psrc += mat->step; pdst += imgPitch; } return 0; }

【彻底解决显示Opencv中Mat图像到Mfc窗口问题】
第三步，可以直接显示CImage格式图像