Patents Assigned to Minerya System, Inc.
  • Structure and method for reducing spatial noise
    Patent number: 5844627
    Abstract: A digital filter for noise reduction selects between local variances obtained from adjacent pixels in the same frame and adjacent pixels in the same field. In one embodiment, the digital filter includes a filter modified from an adaptive Wiener filter which preserves edges and smoothes smooth areas of the image. A high compression ratio can be achieved in very smooth regions of the image without introducing artifacts.
    Type: Grant
    Filed: September 11, 1995
    Date of Patent: December 1, 1998
    Assignee: Minerya System, Inc.
    Inventors: William May, Jean-Georges Fritsch