问OpenCV中两个仿射变换矩阵的组合

EN

  Mat AffineTransform::concatenateMatrix(Mat first, Mat second){

        Mat mul1 = Mat::eye(3, 3, CV_64F);
        Mat mul2 = Mat::eye(3, 3, CV_64F);
        Mat x_;
        Mat temp_inv_;
        Mat mul_r;
        first.convertTo(temp_inv_, CV_64F);
        second.convertTo(x_, CV_64F);

        temp_inv_.row(0).copyTo(mul1.row(0));
        temp_inv_.row(1).copyTo(mul1.row(1));

        x_.row(1).copyTo(mul2.row(1));
        x_.row(0).copyTo(mul2.row(0));

        try{
            mul_r = mul1*mul2;
        }
        catch (Exception& e){
            const char* err_msg = e.what();
            cout << err_msg;
        }

        mul1.release();
        mul2.release();
        temp_inv_.release();

        return mul_r;
}