Patents by Inventor Ka Shun Li

Ka Shun Li 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).

  • Embedding visual information in a two-dimensional bar code
    Patent number: 8948445
    Abstract: A two dimensional barcode containing encoded information can be embedded with an image with a high visual quality. The encoded information within the barcode is meaningful to machines, while the image is meaningful to humans. The two dimensional barcode embedded with the image is designed such that machines can decode the information encoded within the two dimensional barcode even with the distortion from the image. The subject application describes various systems, methods and devices that can facilitate embedding the image within the two dimensional barcode, detecting the two dimensional barcode embedded with the image within a practical environment, and decoding the encoded information from the two dimensional barcode even with the distortion from the image.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: February 3, 2015
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Wai Ho Mow, Chi Yeung Au, Cheuk Yin Chiu, Ka Shun Li, Wenjian Huang
  • EMBEDDING VISUAL INFORMATION IN A TWO-DIMENSIONAL BAR CODE
    Publication number: 20130301870
    Abstract: A two dimensional barcode containing encoded information can be embedded with an image with a high visual quality. The encoded information within the barcode is meaningful to machines, while the image is meaningful to humans. The two dimensional barcode embedded with the image is designed such that machines can decode the information encoded within the two dimensional barcode even with the distortion from the image. The subject application describes various systems, methods and devices that can facilitate embedding the image within the two dimensional barcode, detecting the two dimensional barcode embedded with the image within a practical environment, and decoding the encoded information from the two dimensional barcode even with the distortion from the image.
    Type: Application
    Filed: May 2, 2013
    Publication date: November 14, 2013
    Inventors: Wai Ho Mow, Chi Yeung Au, Cheuk Yin Chiu, Ka Shun Li, Wenjian Huang