Patents by Inventor He Lyu

He Lyu 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).

  • Sigma Delta quantization for images
    Patent number: 11818479
    Abstract: A technique is presented for quantizing pixels of an image using Sigma Delta quantization. In one aspect, pixel values for an image are segmented into columns of pixel values; and for each column in the matrix, pixel values of a given column are quantized using sigma delta modulation. The pixel values in a given column are preferably quantized as a whole, thereby minimizing accumulated quantization error from a starting pixel value in the given column to a current pixel value in the given column. In another aspect, the pixels of an image are quantized using a 2D generalization of Sigma Delta modulation.
    Type: Grant
    Filed: May 14, 2021
    Date of Patent: November 14, 2023
    Assignee: Board of Trustees of Michigan State University
    Inventors: Rongrong Wang, He Lyu
  • SIGMA DELTA QUANTIZATION FOR IMAGES
    Publication number: 20210368115
    Abstract: A technique is presented for quantizing pixels of an image using Sigma Delta quantization. In one aspect, pixel values for an image are segmented into columns of pixel values; and for each column in the matrix, pixel values of a given column are quantized using sigma delta modulation. The pixel values in a given column are preferably quantized as a whole, thereby minimizing accumulated quantization error from a starting pixel value in the given column to a current pixel value in the given column. In another aspect, the pixels of an image are quantized using a 2D generalization of Sigma Delta modulation.
    Type: Application
    Filed: May 14, 2021
    Publication date: November 25, 2021
    Applicant: Board of Trustees of Michigan State University
    Inventors: Rongrong Wang, He Lyu