US 12,462,590 B2
Method for automatically adapting a pattern projection rate in an active perception system
Xavier Lagorce, Saint-Maur-des-Fossés (FR); and Artiom Tchouprina, Herblay (FR)
Assigned to Prophesee, Paris (FR)
Filed by Prophesee, Paris (FR)
Filed on Nov. 24, 2021, as Appl. No. 17/534,884.
Claims priority of application No. 20209903 (EP), filed on Nov. 25, 2020.
Prior Publication US 2022/0166944 A1, May 26, 2022
Int. Cl. H04N 5/353 (2011.01); G06V 10/145 (2022.01); G06V 20/64 (2022.01); H04N 5/225 (2006.01); H04N 5/232 (2006.01)
CPC G06V 20/64 (2022.01) [G06V 10/145 (2022.01)] 10 Claims
OG exemplary drawing
 
1. A method for adjusting a pattern projection rate in an active perception system, the method comprising:
observing a scene with an event-based sensor array;
projecting a current light pattern of a sequence of light patterns on the scene for a given interval of time;
retrieving events generated by the event-based sensor array in response to the projection of the current light pattern;
monitoring event retrieval progress to determine an end-of-burst criterion in the events; and
dynamically triggering a projection of a next light pattern in the sequence of light patterns when the end-of-burst criterion is met.