1. A method of event-based down sampling, comprising: receiving a plurality of sensor events, each sensor event of the plurality of sensor events corresponding to an address and a time stamp; selecting a first sensor event from the plurality of sensor events; determining that a second sensor event from the plurality of sensor events is received within a predetermined time of a time stamp corresponding to the first sensor event; and spatially down sampling the first sensor event and the second sensor event based on the second sensor event being received within the predetermined time.