MFC显示手机拍摄的图片，颜色异常

[tiger波波]

大家好，我用MFC显示手机拍摄的图片时，颜色出现异常，请问怎么回事？？

异常:


实际：

void CCircleRecognitionDlg::OnPaint()
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting
 
		SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);
 
		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;
 
		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialogEx::OnPaint();
 
		using namespace cv;
 
		CRect rect;
		int width, height;
		BITMAPINFO bitmapInfo;
		BITMAPINFOHEADER* bmiHeader;
		Mat image = imread("D:\\image\\Debug\\01.jpg");
 
		width = image.cols;
		height = image.rows;
 
		if (width % 4)
			width = (width + 3) / 4 * 4;
 
		cv::Size winSize(width, height);
		cv::Mat cvImgTmp(winSize, CV_8UC3);
		if (image.size() != winSize)
			cv::resize(image, cvImgTmp, winSize);
		else
			cvImgTmp = image.clone();
 
		GetDlgItem(IDC_STATIC_IMAGE)->GetClientRect(&rect);
 
		bmiHeader = &bitmapInfo.bmiHeader;
		bmiHeader->biSize = sizeof(BITMAPINFOHEADER);
		bmiHeader->biWidth = cvImgTmp.cols;
		bmiHeader->biHeight = -cvImgTmp.rows;
		bmiHeader->biPlanes = 1;
		bmiHeader->biBitCount = 24;
		bmiHeader->biCompression = BI_RGB;
		bitmapInfo.bmiHeader.biSizeImage = 0;
		bmiHeader->biXPelsPerMeter = GetSystemMetrics(SM_CXSCREEN);
		bmiHeader->biYPelsPerMeter = GetSystemMetrics(SM_CYSCREEN);
		bmiHeader->biClrUsed = 0;
		bmiHeader->biClrImportant = 0;
 
		StretchDIBits(GetDlgItem(IDC_STATIC_IMAGE)->GetDC()->GetSafeHdc()
			, 0, 0, std::min(rect.Width(), rect.Height()), std::min(rect.Width(), rect.Height())
			, 0, 0, cvImgTmp.cols, cvImgTmp.rows,
			cvImgTmp.data, &bitmapInfo, DIB_RGB_COLORS, SRCCOPY);
	}
}

[jsxyhelu2015]

mfc这块，我推荐：
《基于opencv和mfc的摄像头采集代码(GOMFCTemplate2)持续更新》https://www.cnblogs.com/jsxyhelu/p/GOMFCTemplate2.html

[tiger波波]

需要SetStretchBltMode设置拉伸模式