+ nice documentation
+ works with video xor camera stream
+ customisable magic values
+ focusuf disables camera autofocus
detect try 3.py
deals with multiple people, not suitable to large amounts of noise
detect try 4.py
deals with at most 1 person, suitable to large amounts of noise (using extra restrictions e.g. distance travelled per frame)
subtract background, threshold to BW image
detect significant countours, identify centroids
track between frames: minimum sum of distances between prev and new centroids
(NOTE: standard object trackers don't work well)