我如何重塑Mat 2D到矢量<vector<Mat>>？

Question

我想轉換尺寸爲[2000] [256]的Mat，並且我想將其轉換爲尺寸爲[256] [20] [10] [10]的vector<vector<mat> >。在Matlab中，有可能做到reshape(Mat2d, 10, 10, 20, 256);我想在這裏做同樣的事情。

Answer 1

我找到了一個解決方案：

vector<vector<Mat>> 
reshape2D4D(Mat &A, int dim1, int dim2, int dim3, int dim4) 
{ 
    vector<vector<Mat>> B; 
    for (int i = 0; i<dim1; i++) { 
     B.push_back(vector<Mat>()); 
     for (int j = 0; j<dim2; j++) 
      B[i].push_back(Mat(dim3, dim4, CV_64F, Scalar::all(1))); 
    } 
    Mat in = A.reshape(1, 1); 
    Mat subImg; 
    for (int i = 0; i < 256; i++) 
    { 
     for (int j = 0; j < 20; j++) 
     { 
      subImg = in(cv::Range(0, 1), cv::Range(100*j, 100*j + 100)); 
      subImg.reshape(10, 10); 
      B[i][j] = subImg; 
     } 
    } 
    return B; 
}