Live camera lab
Start your camera or drop in a video. The left panel is an ordinary camera; the right one runs a retina-style event sensor over the same light, spiking only where brightness changes. Wave your hand to fill it with spikes, then hold still and watch it go quiet.
Normal camera
Every pixel, every frameEvent camera
Only pixels that changedContrast sensitivity
0.09Lower = more events, like a dark-adapted eye
Event persistence
0.55How long a spike stays visible
Event colouring
Cyan = brightening (ON), amber = darkening (OFF).
Power saved
86.8%
3 mW vs 23 mW
Sensor activity
0.00%
0 events / frame
Data rate
0 B/s
259 kB/s for frames · 259200× less
ON / OFF balance
0 / 0
Brightening vs darkening spikes
Energy per second of vision
Modelled from the fraction of pixels that actually changed — the same principle that lets the retina run your vision on roughly the power of a dim LED.