Laser pointer detection
specify your laser color in HSV color. And the color sotre to gloval array
`list_hsv_laser `
around line 20 in cv_detect_laser.hpp
Then, observed color are compared using hotelling's t2 test using https://github.com/niitsuma/hotelling_t_square_test
https://www.youtube.com/watch?v=MKUWnz_obqQ
In this demo, dummy green line added to input image.