Revision history [back]

opencv has operators, that allow you to write it down exactly like you did above:

Vec3f v(1,2,3);
Matx33f M(1,1,1, 
          2,2,2, 
          3,3,3);

Vec3f u = M * v;

cout << u << endl;
[6, 12, 18]

(you can also use a "normal" cv::Mat, Matx33f was just "easier to fill" in the example)

opencv has operators, that allow you to write it down exactly like you did above:

Vec3f v(1,2,3);
Matx33f M(1,1,1, 
          2,2,2, 
          3,3,3);

Vec3f u = M * v;

cout << u << endl;
[6, 12, 18]

(you can also use a "normal" cv::Mat, Matx33f was just "easier to fill" in the example)