c++ - Should I deallocate std::map value if it is an OpenCV mat?

Question

I declared an std::map with the key as size_t and the value as cv::Mat. There are no problems with it and no problems with the insertion via std::map::insert and std::make_pair.

The only question is the following. Should I call cv::Mat::release or something like that to deallocate the Mat map values or not? I allocate the Mat on the stack and call cv::Mat::clone to insert its copy into the map (m_zone_mats is the map I described above):

cv::Mat m_back = cv::Mat(m_frame_height, m_frame_width, CV_8U, cvScalar(0));
const cv::Point2i* ppt[1] = { &z[0] };
int npt[] = { int(z.size()) };
cv::fillPoly(m_back, ppt, npt, 1, cv::Scalar(255));
m_zone_mats.insert(std::make_pair(m_zone_mats.size() + 1, m_back.clone()));

Answer 1

等待大神答复