Patents by Inventor Xuetao Hao

Xuetao Hao 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).

  • Rapid and high precision centroiding method and system for spots image
    Patent number: 8068673
    Abstract: The disclosure relates to a rapid and high precision centroiding method for spots image comprising the following steps. First, the method requires convoluting the gray value of a pixel with a Gaussian filter and judging whether the result thereof exceeds a predetermined threshold. If the value exceeds the predetermined threshold, the method requires marking the current pixel with a flag to identify which spot it belongs to, and then accumulating the product of the gray value and a coordinate value of the same spot; and at the same time, accumulating the gray value of the same spot; and saving the results of the accumulation respectively. If the gray value of the pixel does not exceed the predetermined threshold, the method requires marking the current pixel as a background flag.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: November 29, 2011
    Assignee: Beihang University
    Inventors: Guangjun Zhang, Jie Jiang, Qiaoyun Fan, Xuetao Hao
  • RAPID AND HIGH PRECISION CENTROIDING METHOD AND SYSTEM FOR SPOTS IMAGE
    Publication number: 20080131002
    Abstract: The disclosure relates to a rapid and high precision centroiding method for spots image comprising the following steps. First, the method requires convoluting the gray value of a pixel with a Gaussian filter and judging whether the result thereof exceeds a predetermined threshold. If the value exceeds the predetermined threshold, the method requires marking the current pixel with a flag to identify which spot it belongs to, and then accumulating the product of the gray value and a coordinate value of the same spot; and at the same time, accumulating the gray value of the same spot; and saving the results of the accumulation respectively. If the gray value of the pixel does not exceed the predetermined threshold, the method requires marking the current pixel as a background flag.
    Type: Application
    Filed: March 16, 2007
    Publication date: June 5, 2008
    Inventors: Guangjun Zhang, Jie Jiang, Qiaoyun Fan, Xuetao Hao