Patents by Inventor Anni Cai

Anni Cai 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).

  • Limited-context-based identifying key frame from video sequence
    Patent number: 9064186
    Abstract: An example apparatus is caused to receive a video sequence of a plurality of frames, and perform a number of operations as each of at least some of the frames is received but before all of the frames are received. The apparatus is caused to calculate a score for the frame, and compare the score for the frame to a predefined threshold. The apparatus is caused to cause output of the frame as a key frame in an instance in which the frame is received within a specified period of time and the score for the frame is above the predefined threshold. Otherwise, in an instance in which none of the scores for frames received within the specified period of time is above the predefined threshold, the apparatus is caused to cause output of one of the frames received within the specified period of time as a key frame.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: June 23, 2015
    Assignee: Nokia Technologies Oy
    Inventors: Xiaohui Xie, Xiao Zeng, Yingfei Liu, Yanming Zou, Kongqiao Wang, Zhicheng Zhao, Anni Cai
  • LIMITED-CONTEXT-BASED IDENTIFYING KEY FRAME FROM VIDEO SEQUENCE
    Publication number: 20130251274
    Abstract: An example apparatus is caused to receive a video sequence of a plurality of frames, and perform a number of operations as each of at least some of the frames is received but before all of the frames are received. The apparatus is caused to calculate a score for the frame, and compare the score for the frame to a predefined threshold. The apparatus is caused to cause output of the frame as a key frame in an instance in which the frame is received within a specified period of time and the score for the frame is above the predefined threshold. Otherwise, in an instance in which none of the scores for frames received within the specified period of time is above the predefined threshold, the apparatus is caused to cause output of one of the frames received within the specified period of time as a key frame.
    Type: Application
    Filed: December 9, 2010
    Publication date: September 26, 2013
    Applicant: NOKIA CORPORATION
    Inventors: Xiaohui Xie, Xiao Zeng, Yingfei Liu, Yanming Zou, Kongqiao Wang, Zhicheng Zhao, Anni Cai