with a logartihmic sensor NIT can integrate almost 100% of time, they have no trade-off between dynamics and led flicker mitigation. The down side up to now for such approaches was low light sensitivity but some progress have been made in this direction and maybe NIT can move out from the niche market it had so far. Pierre Cambou - Yole Developpement
A classical LOG pixel has an illumination-dependent time constant that can go to as short a time as 1us in strong light. Effectively, this means that pixel "forgets" its history beyond this time constant. This causes a sensitivity to LED flicker, just like in regular HDR sensor.
NIT have done something differently to avoid this. I don't know what is their solution, but a special part name suggests there is some hardware solution in place.
what is the secret ? PWM @ 100HZ 5% is the hardest case and still works perfectly
ReplyDeleteGreat demo
with a logartihmic sensor NIT can integrate almost 100% of time, they have no trade-off between dynamics and led flicker mitigation. The down side up to now for such approaches was low light sensitivity but some progress have been made in this direction and maybe NIT can move out from the niche market it had so far. Pierre Cambou - Yole Developpement
ReplyDeleteA classical LOG pixel has an illumination-dependent time constant that can go to as short a time as 1us in strong light. Effectively, this means that pixel "forgets" its history beyond this time constant. This causes a sensitivity to LED flicker, just like in regular HDR sensor.
DeleteNIT have done something differently to avoid this. I don't know what is their solution, but a special part name suggests there is some hardware solution in place.