Patents by Inventor Yingchan QIAO

Yingchan QIAO 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).

  • Persistent feature descriptors for video
    Patent number: 10534964
    Abstract: Methods and devices for extracting feature descriptors for a video, the video having a sequence of pictures. The method includes identifying a first key picture and a second key picture later in the sequence than the first key picture; extracting a first set of feature descriptors from the first key picture and a second set of feature descriptors from the second key picture; identifying a set of pairs of feature descriptors, where each pair includes one descriptor from the first set and one descriptor from the second set; generating motion information describing the motion field between the first key picture and the second key picture; and filtering the set of pairs of feature descriptors based on correlation with the motion information to produce and output a subset of persistent descriptors.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: January 14, 2020
    Assignee: BlackBerry Limited
    Inventors: Muhammad Rabeiah M Alrabeiah, Jun Chen, Dake He, Liangyan Li, Yingchan Qiao, Yizhong Wang, Ting Yin
  • PERSISTENT FEATURE DESCRIPTORS FOR VIDEO
    Publication number: 20180218222
    Abstract: Methods and devices for extracting feature descriptors for a video, the video having a sequence of pictures. The method includes identifying a first key picture and a second key picture later in the sequence than the first key picture; extracting a first set of feature descriptors from the first key picture and a second set of feature descriptors from the second key picture; identifying a set of pairs of feature descriptors, where each pair includes one descriptor from the first set and one descriptor from the second set; generating motion information describing the motion field between the first key picture and the second key picture; and filtering the set of pairs of feature descriptors based on correlation with the motion information to produce and output a subset of persistent descriptors.
    Type: Application
    Filed: January 30, 2017
    Publication date: August 2, 2018
    Applicant: BlackBerry Limited
    Inventors: Muhammad Rabeiah M ALRABEIAH, Jun CHEN, Dake HE, Liangyan LI, Yingchan QIAO, Yizhong WANG, Ting YIN