在MFC應用中使用OpenCV轉換圖片格式

#include <afxconv.h>
#include <opencv2/imgcodecs.hpp>

CString CXXDlg::SaveImageAs(CString src, CString des)
{
	USES_CONVERSION;
	cv::Mat m = cv::imread(W2A(src.GetBuffer()));
	src.ReleaseBuffer();
	if (m.data == NULL) {
		return CString(L"");
	}
	cv::imwrite(W2A(des.GetBuffer()), m);
	des.ReleaseBuffer();
	m.release();
	return des;
}