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公开(公告)号：US20210218913A1
公开(公告)日：2021-07-15
申请号：US17215729
申请日：2021-03-29
发明人： Zhaolei Xiao , Jiantong Zhou , Yuntan Fang , Shan Gao , Zhenhua Wu , Jing Xiao
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.
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公开(公告)号：US11490092B2
公开(公告)日：2022-11-01
申请号：US17170122
申请日：2021-02-08
发明人： Zhijie Zhao , Yuntan Fang , Jun Zha , Hu Chen , Jiantong Zhou
IPC分类号： H04N19/176 , H04N19/137 , H04N19/132 , H04N19/167 , H04N7/01 , H04N19/31 , H04N19/33 , H04N5/335
摘要： The present disclosure relates to encoding of video image using coding parameters, which are adapted based on events related to motion within the video image. Image content is captured by a standard image sensor and an event-triggered sensor, providing an event-signal indicating changes (e.g. amount and time-spatial location) of image intensity. Objects are detected within the video image, based on the event signal assessing motion of the object, and their textures extracted. The spatial-time coding parameters of the video image are determined based on the location and strength of the event signal, and the extent to which the detected objects moves.
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公开(公告)号：US11310445B2
公开(公告)日：2022-04-19
申请号：US17215729
申请日：2021-03-29
发明人： Zhaolei Xiao , Jiantong Zhou , Yuntan Fang , Shan Gao , Zhenhua Wu , Jing Xiao
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.
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公开(公告)号：US20210168372A1
公开(公告)日：2021-06-03
申请号：US17170122
申请日：2021-02-08
发明人： Zhijie Zhao , Yuntan Fang , Jun Zha , Hu Chen , Jiantong Zhou
IPC分类号： H04N19/137 , H04N19/132 , H04N19/167 , H04N19/176 , H04N7/01
摘要： The present disclosure relates to encoding of video image using coding parameters, which are adapted based on events related to motion within the video image. Image content is captured by a standard image sensor and an event-triggered sensor, providing an event-signal indicating changes (e.g. amount and time-spatial location) of image intensity. Objects are detected within the video image, based on the event signal assessing motion of the object, and their textures extracted. The spatial-time coding parameters of the video image are determined based on the location and strength of the event signal, and the extent to which the detected objects moves.
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