Patents by Inventor YUNJIN ZHANG

YUNJIN ZHANG 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: 11854172
    Abstract: The present invention discloses a color contrast enhanced rendering method, device and system suitable for an optical see-through head-mounted display. The method includes: (1) acquiring a background environment in real time to obtain a background video and performing Gaussian blur and visual field correction on the video; (2) converting an original rendering color and a processed video color from an RGB color space to a CIELAB color space scaled to a unit sphere range; (3) finding an optimal rendering color based on the original rendering color and the processed video color in the scaled CIELAB space according to a set color difference constraint, a chromaticity saturation constraint, a brightness constraint and a just noticeable difference constraint; and (4) after converting the optimal rendering color back to the RGB space, performing real-time rendering by using the optimal rendering color of the RGB space.
    Type: Grant
    Filed: January 6, 2021
    Date of Patent: December 26, 2023
    Assignee: ZHEJIANG UNIVERSITY
    Inventors: Rui Wang, Hujun Bao, Yunjin Zhang
  • Publication number: 20220261969
    Abstract: The present invention discloses a color contrast enhanced rendering method, device and system suitable for an optical see-through head-mounted display. The method includes: (1) acquiring a background environment in real time to obtain a background video and performing Gaussian blur and visual field correction on the video; (2) converting an original rendering color and a processed video color from an RGB color space to a CIELAB color space scaled to a unit sphere range; (3) finding an optimal rendering color based on the original rendering color and the processed video color in the scaled CIELAB space according to a set color difference constraint, a chromaticity saturation constraint, a brightness constraint and a just noticeable difference constraint; and (4) after converting the optimal rendering color back to the RGB space, performing real-time rendering by using the optimal rendering color of the RGB space.
    Type: Application
    Filed: January 6, 2021
    Publication date: August 18, 2022
    Inventors: RUI WANG, HUJUN BAO, YUNJIN ZHANG