THE ONLY RULE
When two elements touch, register the contact.
Each element's contact radius (r) is determined by its own size in the world.
Contact occurs when the distance between two centers is less than r₁ + r₂.
Nothing else is controlled. Everything else is observed.
Contact occurs when the distance between two centers is less than r₁ + r₂.
Nothing else is controlled. Everything else is observed.
Drop video here or click to upload
35
0%
Elements 0
Pairs 0
Avg r —
Min r —
Max r —
Mode MOTION
Status IDLE
Trails OFF
System ready. Upload video or start webcam to begin observing.
MOTION — detects moving blobs; r and bounding box derived from each blob's shape. Best for aerial crowds, birds, traffic, fish, raindrops.
BRIGHTNESS — detects bright regions against darker background. Best for daytime light spots, lamps, reflections, glowing objects.
COCO-SSD — AI object detection; bounding box and label come directly from the model. Best for close-up subjects (people, cars, animals).
TRAILS — accumulates every contact event over time, building an archive of encounters.
MOBILE — open this page over https and tap "Live webcam"; back camera is used by default.
BRIGHTNESS — detects bright regions against darker background. Best for daytime light spots, lamps, reflections, glowing objects.
COCO-SSD — AI object detection; bounding box and label come directly from the model. Best for close-up subjects (people, cars, animals).
TRAILS — accumulates every contact event over time, building an archive of encounters.
MOBILE — open this page over https and tap "Live webcam"; back camera is used by default.