Stochastic Exposure Coding for Handling Multi-ToF-Camera Interference
Stochastic Exposure Coding for Handling Multi-ToF-Camera Interference
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Prior Work: Different Modulation Frequencies (ACO)
Prior Work: Different Modulation Frequencies (ACO)
Most conventional systems using ToF Cameras propose using different modulation frequencies for each camera.
This method fails to eliminate the interference in the constant part of the emitted light.
Leads to lower SNR and hence, does not solve the problem completely!
Prior Work: Stochastic Exposure Coding (SEC)
Prior Work: Stochastic Exposure Coding (SEC)
Similar to the Wireless Protocol Slotted Aloha.
Instead of keeping the emitter and sensor ‘on’ at all times, do a probabilistic switch on-switch off procedure to reduce the chances of collisions.
There is no free lunch!!! Due to the stochasticity, light shall be transmitted from the camera in only a few of the slots, leading to a decrease in the Effective Exposure Time
The points above lead to the following constraints:
Increase in Source Power Amplification - to counter the decrease in effective exposure time.
Choice of the Slot ON probability
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