Patents by Inventor Leslie G. McWethy

Leslie G. McWethy 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 and apparatus for deriving stream network vectors from digital elevation map data
    Patent number: 9117305
    Abstract: A processor-based apparatus for computing stream vectors for an area of interest divides the area of interest into a number of hydrologic unit code (HUC) areas. The processor calculates stream vectors from lower resolution digital elevation map (DEM) data. For those HUC areas where higher resolution DEM data is available, the processor merges the lower resolution and higher resolution DEM data. Stream vectors are calculated from the merged DEM data and used to replace those stream vectors calculated from the lower resolution DEM data. Attributes of stream vectors that receive upstream flow from an adjacent HUC area are corrected.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: August 25, 2015
    Assignee: Weyerhaeuser NR Company
    Inventors: Leslie G. McWethy, Zhenkui Ma
  • METHOD AND APPARATUS FOR DERIVING STREAM NETWORK VECTORS FROM DIGITAL ELECATION MAP DATA
    Publication number: 20140003672
    Abstract: A processor-based apparatus for computing stream vectors for an area of interest divides the area of interest into a number of hydrologic unit code (HUC) areas. The processor calculates stream vectors from lower resolution digital elevation map (DEM) data. For those HUC areas where higher resolution DEM data is available, the processor merges the lower resolution and higher resolution DEM data. Stream vectors are calculated from the merged DEM data and used to replace those stream vectors calculated from the lower resolution DEM data. Attributes of stream vectors that receive upstream flow from an adjacent HUC area are corrected.
    Type: Application
    Filed: June 29, 2012
    Publication date: January 2, 2014
    Applicant: WEYERHAEUSER NR COMPANY
    Inventors: Leslie G. McWethy, Zhenkui Ma