05.03.19 clean up

tidy up 04.03.19

04.03.19 backup

backup 04.03.19

After making video

added sub-pixel estimation to belt/belt_travel.py

cctv_disparity.py now ready for experiments to find good values for P1 and P2

Clean up.

Frame Buffer is reset if tracker fails.

Belt travel now estimated by template matching. Frame buffer stores belt travel using convention that left-right travel is +ve. Disparity now measured in one pass with minDisp = -1.