Artificial Intelligence and Machine Vision

In this blog, I will describe how we reduced the noise of the Time-Of-Flight sensor in our AR glasses prototype. Types of noise - systematic noise    note: caused by imperfect sinusoidal modulation - random noise    note: by shot noise. use bilateral filtering Motion artifacts reduction note: when motion is observed on a target object, we have motion artifacts observed in the tof sensor.  This happens when TOF measurement is recorded sequentially.  And, this causes doppler effects. fix: - use Plus and Minus rules    -- reference:        1) "Time of flight motion compensation revisited"  (2014)        2) "Time of flight cameras: Principles, Methods and Applications" (2012) Physics-based MPI reduction fix: - use 2K+1 frequency measurements for K inferencing paths in absence of noise. Per-pixel temporal processing of raw ToF measurements fix: - matrix pencil method - Prong's method - onthogonal matching method - EPIRIT / MUSIC - atomi