Patents by Inventor Lixian Li

Lixian 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).

  • Color gamut mapping method and apparatus
    Patent number: 11212422
    Abstract: A color gamut mapping method and apparatus, includes obtaining a to-be-processed image, obtaining lightness and chroma information of a target color gamut, and mapping a lightness value and a chroma value of a pixel in the to-be-processed image to obtain a processed image corresponding to the target color gamut, where a pixel in the processed image has a mapped lightness value and a mapped chroma value, and the mapped lightness value and the mapped chroma value are obtained by mapping the lightness value and the chroma value of the pixel in a color gamut of the to-be-processed image to the target color gamut using a point with a minimum lightness value in the target color gamut as a mapping end point.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: December 28, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Ming Ronnier Luo, Lihao Xu, Lixian Li
  • Color Gamut Mapping Method and Apparatus
    Publication number: 20210006686
    Abstract: A color gamut mapping method and apparatus, includes obtaining a to-be-processed image, obtaining lightness and chroma information of a target color gamut, and mapping a lightness value and a chroma value of a pixel in the to-be-processed image to obtain a processed image corresponding to the target color gamut, where a pixel in the processed image has a mapped lightness value and a mapped chroma value, and the mapped lightness value and the mapped chroma value are obtained by mapping the lightness value and the chroma value of the pixel in a color gamut of the to-be-processed image to the target color gamut using a point with a minimum lightness value in the target color gamut as a mapping end point.
    Type: Application
    Filed: September 24, 2020
    Publication date: January 7, 2021
    Inventors: Ming Ronnier Luo, Lihao Xu, Lixian Li