Patents by Inventor Luowei Zhou

Luowei Zhou 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).

  • Patent number: 10958925
    Abstract: Systems and methods for dense captioning of a video include a multi-layer encoder stack configured to receive information extracted from a plurality of video frames, a proposal decoder coupled to the encoder stack and configured to receive one or more outputs from the encoder stack, a masking unit configured to mask the one or more outputs from the encoder stack according to one or more outputs from the proposal decoder, and a decoder stack coupled to the masking unit and configured to receive the masked one or more outputs from the encoder stack. Generating the dense captioning based on one or more outputs of the decoder stack. In some embodiments, the one or more outputs from the proposal decoder include a differentiable mask. In some embodiments, during training, error in the dense captioning is back propagated to the decoder stack, the encoder stack, and the proposal decoder.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: March 23, 2021
    Assignee: salesforce.com, inc.
    Inventors: Yingbo Zhou, Luowei Zhou, Caiming Xiong, Richard Socher
  • Publication number: 20200084465
    Abstract: Systems and methods for dense captioning of a video include a multi-layer encoder stack configured to receive information extracted from a plurality of video frames, a proposal decoder coupled to the encoder stack and configured to receive one or more outputs from the encoder stack, a masking unit configured to mask the one or more outputs from the encoder stack according to one or more outputs from the proposal decoder, and a decoder stack coupled to the masking unit and configured to receive the masked one or more outputs from the encoder stack. Generating the dense captioning based on one or more outputs of the decoder stack. In some embodiments, the one or more outputs from the proposal decoder include a differentiable mask. In some embodiments, during training, error in the dense captioning is back propagated to the decoder stack, the encoder stack, and the proposal decoder.
    Type: Application
    Filed: November 18, 2019
    Publication date: March 12, 2020
    Inventors: Yingbo ZHOU, Luowei ZHOU, Caiming XIONG, Richard SOCHER
  • Patent number: 10542270
    Abstract: Systems and methods for dense captioning of a video include a multi-layer encoder stack configured to receive information extracted from a plurality of video frames, a proposal decoder coupled to the encoder stack and configured to receive one or more outputs from the encoder stack, a masking unit configured to mask the one or more outputs from the encoder stack according to one or more outputs from the proposal decoder, and a decoder stack coupled to the masking unit and configured to receive the masked one or more outputs from the encoder stack. Generating the dense captioning based on one or more outputs of the decoder stack. In some embodiments, the one or more outputs from the proposal decoder include a differentiable mask. In some embodiments, during training, error in the dense captioning is back propagated to the decoder stack, the encoder stack, and the proposal decoder.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: January 21, 2020
    Assignee: salesforce.com, inc.
    Inventors: Yingbo Zhou, Luowei Zhou, Caiming Xiong, Richard Socher
  • Publication number: 20190149834
    Abstract: Systems and methods for dense captioning of a video include a multi-layer encoder stack configured to receive information extracted from a plurality of video frames, a proposal decoder coupled to the encoder stack and configured to receive one or more outputs from the encoder stack, a masking unit configured to mask the one or more outputs from the encoder stack according to one or more outputs from the proposal decoder, and a decoder stack coupled to the masking unit and configured to receive the masked one or more outputs from the encoder stack. Generating the dense captioning based on one or more outputs of the decoder stack. In some embodiments, the one or more outputs from the proposal decoder include a differentiable mask. In some embodiments, during training, error in the dense captioning is back propagated to the decoder stack, the encoder stack, and the proposal decoder.
    Type: Application
    Filed: January 18, 2018
    Publication date: May 16, 2019
    Inventors: Yingbo Zhou, Luowei ZHOU, Caiming XIONG, Richard SOCHER
  • Patent number: 6249108
    Abstract: An switching converter (APF) is a device that is connected in parallel to and cancels the reactive and harmonic currents from a group of nonlinear loads so that the resulting total current drawn from the ac source is sinusoidal. What is provided is an unified constant-frequency integration (UCI) APF control method based on one-cycle control. This method employs an integrator to control the pulse width of an ac-dc converter so that its current draw is precisely opposite to the reactive and harmonic current draw of the nonlinear loads. In contrast to previously proposed methods, there is no need to generate a current reference for the control of the converter current, thus no need for a multiplier, and no need to sense the ac line voltage, the APF current, or the nonlinear load current. Only one current sensor and one voltage sensor are used to sense the ac source current and the dc capacitor voltage.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: June 19, 2001
    Assignee: The Regents of the University of California
    Inventors: Keyue M. Smedley, Luowei Zhou