Dynamic vision sensor background active noise filter and processor

• Main Authors: WANG LEI, WANG SHIYING, LIU GUOQIANG, GUO SHASHA, KANG ZIYANG, YANG ZHIJIE, GONG RUI, WANG SHUQUAN, XU WEIXIA, SHI WEI
• Format: Patent
• Language: Chinese; English
• Published: 24.04.2020
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

The invention discloses a dynamic vision sensor background activity noise filter and a processor. The dynamic visual sensor background active noise filter comprises a hash mapping module, a shifting and remainder logic module, an M array storage and element checking module, and an array updating module. The input event is mapped to the index position of an M array by utilizing the above modules, noise events are judged according to the value of the M array, and finally the value of the index position is updated to record the event. Filtering of background activity noise of a dynamic vision sensor can be achieved. Memory resources are fewer than those occupied by a traditional nearest neighbor filter. It is guaranteed that the processing speed is smaller than the event generation speed, sothat real-time processing is guaranteed, and a better signal-to-noise ratio is obtained; and the hash mapping module, the shift and remainder logic module, the M array storage and element check moduleand the array updating mo