Function vconcat2 

pub fn vconcat2(
    src1: &impl ToInputArray,
    src2: &impl ToInputArray,
    dst: &mut impl ToOutputArray,
) -> Result<()>

Applies vertical concatenation to given matrices.

The function vertically concatenates two or more cv::Mat matrices (with the same number of cols).

   cv::Mat matArray[] = { cv::Mat(1, 4, CV_8UC1, cv::Scalar(1)),
                           cv::Mat(1, 4, CV_8UC1, cv::Scalar(2)),
                           cv::Mat(1, 4, CV_8UC1, cv::Scalar(3)),};

   cv::Mat out;
   cv::vconcat( matArray, 3, out );
   //out:
   //[1,   1,   1,   1;
   // 2,   2,   2,   2;
   // 3,   3,   3,   3]

Parameters

• src: input array or vector of matrices. all of the matrices must have the same number of cols and the same depth.
• nsrc: number of matrices in src.
• dst: output array. It has the same number of cols and depth as the src, and the sum of rows of the src.

See also

cv::hconcat(const Mat*, size_t, OutputArray), cv::hconcat(InputArrayOfArrays, OutputArray) and cv::hconcat(InputArray, InputArray, OutputArray)

Overloaded parameters

   cv::Mat_<float> A = (cv::Mat_<float>(3, 2) << 1, 7,
                                                 2, 8,
                                                 3, 9);
   cv::Mat_<float> B = (cv::Mat_<float>(3, 2) << 4, 10,
                                                 5, 11,
                                                 6, 12);

  cv::Mat C;
   cv::vconcat(A, B, C);
   //C:
   //[1, 7;
   // 2, 8;
   // 3, 9;
   // 4, 10;
   // 5, 11;
   // 6, 12]

• src1: first input array to be considered for vertical concatenation.
• src2: second input array to be considered for vertical concatenation.
• dst: output array. It has the same number of cols and depth as the src1 and src2, and the sum of rows of the src1 and src2.