Patents by Inventor Yuntan Fang

Yuntan Fang 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).

  • Publication number: 20230360254
    Abstract: A pose estimation method and an apparatus are provided, to obtain a more accurate pose estimation result. The method includes: obtaining a first event image and a first target image, where the first event image is aligned with the first target image in time sequence, the first target image includes an RGB image or a depth image, and the first event image includes an image indicating a movement trajectory that is of a target object and that is generated when the target object moves in a detection range of a motion sensor; determining integration time of the first event image; if the integration time is less than a first threshold, determining that the first target image is not for performing pose estimation; and performing pose estimation based on the first event image.
    Type: Application
    Filed: June 29, 2023
    Publication date: November 9, 2023
    Inventors: Chang LIU, Chuangchuang LIU, Baoyang CHEN, Yuntan FANG, Siwei DONG, Shu FANG, Huimin ZHANG
  • Patent number: 11490092
    Abstract: 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.
    Type: Grant
    Filed: February 8, 2021
    Date of Patent: November 1, 2022
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Zhijie Zhao, Yuntan Fang, Jun Zha, Hu Chen, Jiantong Zhou
  • Patent number: 11310445
    Abstract: 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.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: April 19, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhaolei Xiao, Jiantong Zhou, Yuntan Fang, Shan Gao, Zhenhua Wu, Jing Xiao
  • Publication number: 20210218913
    Abstract: 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.
    Type: Application
    Filed: March 29, 2021
    Publication date: July 15, 2021
    Inventors: Zhaolei Xiao, Jiantong Zhou, Yuntan Fang, Shan Gao, Zhenhua Wu, Jing Xiao
  • Publication number: 20210174092
    Abstract: The invention relates to an image processing apparatus for extracting a feature from an image of a scene. The apparatus may comprises processing circuitry configured, in response to a feature extraction event, to extract a feature from first image data representing a first image of a scene, wherein the feature extraction event is based on second image data representing a second image of the scene. The image processing apparatus may include an event driven sensor and the second image may include may include a positive/negative amount of the intensity change and the location of the intensity change. Moreover, the invention relates to a corresponding image processing method.
    Type: Application
    Filed: February 12, 2021
    Publication date: June 10, 2021
    Inventors: Zhijie ZHAO, Yuntan FANG, Jun ZHA, Hu CHEN, Jiantong ZHOU
  • Publication number: 20210168372
    Abstract: 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.
    Type: Application
    Filed: February 8, 2021
    Publication date: June 3, 2021
    Inventors: Zhijie Zhao, Yuntan Fang, Jun Zha, Hu Chen, Jiantong Zhou