US 11,856,290 B2
Method and apparatus of processing a signal from an event-based sensor
Amos Sironi, Questembert (FR); Marc Rousseau, Bois-le-Roi (FR); Christoph Posch, Bad Fischau (AT); and Xavier Lagorce, Saint-Maur-des-Fosses (FR)
Assigned to PROPHESEE, Paris (FR)
Filed by PROPHESEE, Paris (FR)
Filed on Mar. 4, 2022, as Appl. No. 17/686,712.
Application 17/686,712 is a continuation of application No. 16/963,944, granted, now 11,303,804, previously published as PCT/EP2019/051919, filed on Jan. 25, 2019.
Claims priority of application No. 18305063 (EP), filed on Jan. 26, 2018; and application No. 18191469 (EP), filed on Aug. 29, 2018.
Prior Publication US 2022/0191393 A1, Jun. 16, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 23/60 (2023.01); H04N 23/57 (2023.01); H04N 25/40 (2023.01)
CPC H04N 23/665 (2023.01) [H04N 23/57 (2023.01); H04N 25/40 (2023.01)] 7 Claims
OG exemplary drawing
 
1. A method of processing a signal from an event-based sensor, the event-based sensor having an array of sensing elements facing a scene, the method comprising:
receiving the signal including, for each sensing element, successive events originating from said sensing element depending on variations of incident light from the scene;
analyzing the signal to detect a frequency pattern in a light profile sensed by at least one sensing element; and
extracting information from the scene in response to detection of the frequency pattern,
wherein extracting information comprises demodulating frequency patterns detected in the scene, wherein the scene comprises objects and light sources observed by the event-based sensor.