Patents by Inventor Wenchang Xiong

Wenchang Xiong has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Optical flow computing method and computing device
    Patent number: 11532089
    Abstract: The present disclosure provides an optical flow calculation method for a computing device, including: acquiring an event data flow with a predetermined duration from a DVS, the event data flow including a coordinate position and a timestamp of a triggered event; generating a timestamp matrix in accordance with the coordinate position and the timestamp of the triggered event; scanning elements in the timestamp matrix in a predetermined scanning direction, so as to determine at least one intermediate point in each element in accordance with a value and a gradient of the element in the predetermined scanning direction; and calculating a distance between adjacent intermediate points and a gradient direction, and generating an optical flow matrix in accordance with a calculation result. The present disclosure further provides the computing device.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: December 20, 2022
    Assignee: OMNIVISION SENSOR SOLUTION (SHANGHAI) CO., LTD
    Inventors: Wenchang Xiong, Shoushun Chen
  • OPTICAL FLOW COMPUTING METHOD AND COMPUTING DEVICE
    Publication number: 20210042939
    Abstract: The present disclosure provides an optical flow calculation method for a computing device, including: acquiring an event data flow with a predetermined duration from a DVS, the event data flow including a coordinate position and a timestamp of a triggered event; generating a timestamp matrix in accordance with the coordinate position and the timestamp of the triggered event; scanning elements in the timestamp matrix in a predetermined scanning direction, so as to determine at least one intermediate point in each element in accordance with a value and a gradient of the element in the predetermined scanning direction; and calculating a distance between adjacent intermediate points and a gradient direction, and generating an optical flow matrix in accordance with a calculation result. The present disclosure further provides the computing device.
    Type: Application
    Filed: October 29, 2020
    Publication date: February 11, 2021
    Inventors: Wenchang Xiong, Shoushun CHEN