Patents by Inventor William K. Pratt

William K. Pratt 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).

  • Patent number: 4330833
    Abstract: An improved method and apparatus for digital image processing is disclosed which permits greater efficiency in implementation of digital filtering techniques. In one implementation specially selected small generating kernels, or masks, are sequentially convolved with a data array of pixels representative of a particular image for more efficient restoration, enhancement or other conventional digital image processing techniques. The small generating kernels may be varied for each sequential convolution. In some implementations the output of each sequential convolution may be weighted in accordance with the filtering desired. Means for implementing the method are also disclosed.
    Type: Grant
    Filed: May 26, 1978
    Date of Patent: May 18, 1982
    Assignee: Vicom Systems, Inc.
    Inventors: William K. Pratt, Jean-Francois Abramatic, Olivier Faugeras