detect sequence going up/down

    yair reshef
    Jan 23 2012 | 1:28 am
    above my hand are 6 sensors moving under these sensors, is my hand moving left or right ideally i'll know at what speed.
    might be able to pull this off with cv.jit.lkflow. it does "pixel flow calculation". but this seems an overkill
    suggestions?
    • jamesson
      Jan 23 2012 | 7:23 am
      You need to be clearer about the nature of the sensors.
      If you have some kind of stable datarate and x/y coords you can do standard math calculation for direction (0) and speed (distance/time).
      If you only have on/off, you must number the sensors and use some timer to see the time between one coming on and the other coming on. Then simply subtract number of the first sensor from the last and see whether you moved left (negative) or right (positive).
      Best
      Joe
    • yair reshef
      Jan 23 2012 | 7:51 am
      thanks, ill go that way