Patents by Inventor Yu Xiaowei

Yu Xiaowei 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).

  • Method, apparatus and program for determining growth of trees
    Patent number: 7013235
    Abstract: The present invention relates to a method of determining the growth of trees based on first and second measurement data obtained at different moments of time by utilizing a laser scanner located above the measured trees. In order to determine the growth of a large number of trees as fast and as easy as possible, said method comprises: processing said first measurement data in order to determine the location of tree locations (A), processing said second measurement data in order to determine the location of tree locations (B), determining the locations which are tree locations according to the results of both said first and second processing (C), and calculating the growth of trees at said determined locations by determining the difference in the size indicated by the second measurement data as compared to the size indicated by said first measurement data (D).
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: March 14, 2006
    Assignee: Geodeettinen Laitos
    Inventors: Juha Hyyppä, Yu Xiaowei
  • Method, apparatus and program for determining growth of trees
    Publication number: 20040236535
    Abstract: The present invention relates to a method of determining the growth of trees based on first and second measurement data obtained at different moments of time by utilizing a laser scanner located above the measured trees. In order to determine the growth of a large number of trees as fast and as easy as possible, said method comprises: processing said first measurement data in order to determine the location of tree locations (A), processing said second measurement data in order to determine the location of tree locations (B), determining the locations which are tree locations according to the results of both said first and second processing (C), and calculating the growth of trees at said determined locations by determining the difference in the size indicated by the second measurement data as compared to the size indicated by said first measurement data (D).
    Type: Application
    Filed: March 19, 2004
    Publication date: November 25, 2004
    Applicant: Geodeettinen Laitos
    Inventors: Juha Hyyppa, Yu Xiaowei