EVENT FILTERING METHOD FOR OPERATING AN EVENT-BASED IMAGE SENSOR

摘要

An event filtering method for operating an event-based image sensor comprising a plurality of pixel circuits comprising: - a photoreceptor circuit configured for delivering a photoreceptor signal, - a change detector configured for detecting a change in the photoreceptor signal, and emitting an event each time a change is detected, an event being characterized at least by a polarity reflecting a direction of the change, wherein an event filter (20) receives a series of events, and for each received event, the event filter either accepts or rejects the received event, the event filter (20) accepting the received event only if a first condition a) and a second condition b) are met: a) the received event has a same polarity as a polarity of a at least a last received event and, b) the received event and the last received event are separated by a time interval shorter than a time threshold.