公开(公告)号：EP3827582A1

公开(公告)日：2021-06-02

申请号：EP18930015.5

申请日：2018-08-14

申请人： HUAWEI TECHNOLOGIES CO., LTD.

发明人： ZHAO, Zhijie ,  FANG, Yuntan ,  ZHA, Jun ,  CHEN, Hu ,  ZHOU, Jiantong

IPC分类号： H04N7/18 ,  G06T7/20

公开(公告)号：EP3849168A1

公开(公告)日：2021-07-14

申请号：EP19864611.9

申请日：2019-09-10

申请人： HUAWEI TECHNOLOGIES CO., LTD.

发明人： XIAO, Zhaolei ,  ZHOU, Jiantong ,  FANG, Yuntan ,  GAO, Shan ,  WU, Zhenhua ,  XIAO, Jing

IPC分类号： H04N5/225

摘要： This application provides a dynamic vision sensor. The sensor converts an optical signal into an electrical signal by using a photoelectric conversion unit, to generate a photovoltage; performs second-order difference on the photovoltage by using a second-order differential circuit; and generates a second-order event signal based on a result of second-order difference. A camera including the sensor can generate an image based on the second-order event signal, where the image represents a change of a light change speed. In this way, redundant background information can be reduced when the camera is moving.

公开(公告)号：EP3808085A1

公开(公告)日：2021-04-21

申请号：EP18930420.7

申请日：2018-08-14

申请人： HUAWEI TECHNOLOGIES CO., LTD.

发明人： ZHAO, Zhijie ,  FANG, Yuntan ,  ZHA, Jun ,  CHEN, Hu ,  ZHOU, Jiantong

IPC分类号： H04N19/154 ,  H04N5/335 ,  H04N19/167 ,  H04N19/132