Patents by Inventor Antonette M. Roppo

Antonette M. Roppo 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 effecting background suppression of image data
    Patent number: 5093871
    Abstract: Apparatus for processing digitized images which contain useful image formation data and background features a background supression scheme used to convert each pixel value to preselected values in a smaller range in order to facilitate data processing such as compression and scaling. Provision is made for generating an adaptive or dynamic threshold value, as well as a much more stable background reference threshold value.
    Type: Grant
    Filed: October 10, 1989
    Date of Patent: March 3, 1992
    Assignee: Unisys Corporation
    Inventors: Robert Klein, Antonette M. Roppo, David C. Williams