Patents by Inventor David J. S. Michael

David J. S. Michael 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).

  • Golden template comparison using efficient image registration
    Patent number: 5640200
    Abstract: Golden Template Comparison (GTC) is a method that can be applied to flaw and defect detection in images of 2-dimensional scenes. When a test image is compared to a golden template image, the images must be registered, and then subtracted. The resulting difference image is then analyzed for features that indicate flaws or defects. The registration step is a major determinant of the performance of GTC, and the invention performs the registration step of GTC using a highly efficient and accurate registration method.
    Type: Grant
    Filed: December 28, 1994
    Date of Patent: June 17, 1997
    Assignee: Cognex Corporation
    Inventor: David J. S. Michael