Patents by Inventor James S. Houchin

James S. Houchin 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 pixel non-uniformity correction
    Patent number: 5047861
    Abstract: An apparatus for reading and correcting an image including: a sensor which receives light and converts it to electrical signals; a digitizing unit to convert the analog image signal to a digital signal; a calibration unit to capture calibration data for each pixel under known illumination conditions and to produce individual correction values for each pixel and a correction unit comprised of a look-up table addressed by both the digital image signal and the correction values which corrects the digital image data.
    Type: Grant
    Filed: July 31, 1990
    Date of Patent: September 10, 1991
    Assignee: Eastman Kodak Company
    Inventors: James S. Houchin, Kenneth A. Parulski