OpenCV?? Mat? ??? ??

OpenCV? ??? ??? ?? ? ??? ?? ??? ??? ?????. ? ???? Mat ??? ???? ??? ???? ?? ??? ? ????.

Mat?? ??? ?? ??

?? Mat? ??, ???? ???? ????? ????? ?? ???? 1D ??? ?? ???? ? ????.

<code class="cpp">cv::Mat mat;
// ...
std::vector<uchar> array(mat.rows * mat.cols * mat.channels());
if (mat.isContinuous()) {
    array = mat.data;
}</code>

2D ??? ??

??? Mat? ?? , ?? ???? ??? ???? 2D ??? ??? ? ????.

<code class="cpp">cv::Mat mat;
// ...
std::vector<std::vector<uchar>> array(mat.rows);
for (int i = 0; i < mat.rows; ++i) {
    array[i] = std::vector<uchar>(mat.cols * mat.channels());
    array[i] = mat.ptr<uchar>(i);
}</code>

??? ??

C ?? ?????? ??? ???? ?? ?? ?? ??? ??? ? ????.

<code class="cpp">cv::Mat mat;
// ...
std::vector<uchar> array;
if (mat.isContinuous()) {
    array.assign(mat.data, mat.data + mat.total() * mat.channels());
} else {
    for (int i = 0; i < mat.rows; ++i) {
        array.insert(array.end(), mat.ptr<uchar>(i), mat.ptr<uchar>(i) + mat.cols * mat.channels());
    }
}</code>

Mat ??? ???

Mat? ???? ??? ??? ???? ??? ???? ?? ??? ??? ????. imread(), clone() ?? ???? ??? ??? ????? ??????. ??? ? ? Mat? ROI(?? ??)?? ??? ??? ????? ?? ? ????.

? ?? ??? ??? ???? ???? ?????.

<code class="cpp">cv::Mat big_mat = cv::Mat::zeros(1000, 1000, CV_8UC3);
cv::Mat sub_mat = big_mat(cv::Rect(10, 10, 100, 100));

std::cout << "big_mat is continuous: " << big_mat.isContinuous() << std::endl; // true
std::cout << "sub_mat is continuous: " << sub_mat.isContinuous() << std::endl; // false</code>

? ??? OpenCV?? Mat ??? ???? ??? ???? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!