Patents by Inventor Jiangchuan Fan

Jiangchuan Fan 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).

  • Publication number: 20250209655
    Abstract: The present application relates to a method and apparatus for calculating a plant height uniformity of a crop population, a device, and a medium. According to the present application, a target crop population is segmented into plots, and the plot is segmented into grids. Since a number of target crop grids is the same as a number of target crop plants in each target crop plot, a plant height uniformity of each target crop plot can be determined according to three-dimensional (3D) point cloud data of the grid, thereby determining a uniformity of the target crop population. The present application realizes automatic and high-spatial-resolution uniformity calculation based on the point cloud data, improves the calculation efficiency, reduces the labor cost, and can expand the calculation area. Meanwhile, the present application can realize non-contact calculation, thereby further improving the availability of the uniformity calculated result.
    Type: Application
    Filed: December 24, 2024
    Publication date: June 26, 2025
    Inventors: Xinyu GUO, Wushuai CHANG, Weiliang WEN, Jiangchuan FAN, Shenghao GU
  • Patent number: 12002242
    Abstract: The present invention discloses a CIELAB color space-based quantitative testing and analysis method for rice seed viability, and the method comprises removing husks on surfaces of rice seeds, soaking and imbibing the rice seeds without the husks removed, staining the rice seeds by using a TTC staining solution, and longitudinally cutting the rice seeds along embryos; converting the longitudinal section image of the rice seed from an RGB color space to a CIELAB color space, and calculating L value, a value and b value per unit area of the rice embryo as a staining intensity per unit area, and converting the staining intensity into a rice seed viability score according to a pre-established conversion model of the staining intensity and the rice seed viability score. According to the present invention, a reference result can be provided for the rapid, accurate and objective evaluation of the seed viability.
    Type: Grant
    Filed: January 25, 2024
    Date of Patent: June 4, 2024
    Assignee: Quality Standard and Testing Technology Research Institute, Yunnan Academy of Agricultural Science
    Inventors: Yanfang Liu, Ruixi Han, Juxiang Qiao, Jiangchuan Fan, Changsheng Yin, Xiaohong Yang