Mat矩阵运算

Mat的运算：A和B是Mat类型，s是标量，a是double类型的标量

Mat C = (Mat_(3,3) << 0, -1, 0, -1, 5, -1, 0, -1, 0);
Mat M(2,2, CV_8UC3, Scalar(0,0,255));

int sz[3] = {2,2,2};
Mat L(3,sz, CV_8UC(1), Scalar::all(0));

M.create(4,4, CV_8UC(2));
    
Mat O = Mat::ones(2, 2, CV_32F);
Mat Z = Mat::zeros(3,3, CV_8UC1);
Mat RowClone = C.row(1).clone();
Mat R = Mat(3, 2, CV_8UC3);
randu(R, Scalar::all(0), Scalar::all(255));

加减、取负：A+B A-B A+s A-s s+A s-A -A
按元素相乘和相除：A.mul(B)， A/B, alpha / A
矩阵乘法：A*B
转置：A.t()
矩阵的逆：A.inv()
按位进行逻辑运算：A & B A | B
按位最大和最小：min(A, B)， max(A, B)
计算Mat的元素和：sum(A)
对Mat按元素求次幂：pow(src_mat, 2, dst_mat)
求Mat的特征值和特征向量：Mat eValuesMat;Mat eVectorsMat; eigen(myMat, eValuesMat, eVectorsMat);