Patents Assigned to Minerva Systems
  • Structure and method for film grain noise reduction
    Patent number: 6067125
    Abstract: A video signal is both spatially and temporally filtered. The output video signal is temporally noise reduced in portions of the image which exhibits little or no motion, and is spatially noise reduced in portions where motion exists. This approach is particularly applicable to reducing film grain noise in video material that originates from images on photographic films, since film grain noise is more correlated spatially than temporally.
    Type: Grant
    Filed: May 15, 1997
    Date of Patent: May 23, 2000
    Assignee: Minerva Systems
    Inventor: William D. May