Patents by Inventor Stephanie S. Chen

Stephanie S. Chen 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).

  • Correcting for keystone distortion in a digital image displayed by a digital projector
    Patent number: 6491400
    Abstract: A method for correcting for keystone distortion and reducing aliasing defects in a digital image for use by a digital image projector, includes the steps of receiving an original digital image; lowpass filtering the original digital image to provide a lowpass filtered digital image having reduced high frequency spatial components which contribute to aliasing defects introduced by digital keystone correction; processing the lowpass filtered digital image to provide for digital keystone correction; and sharpening the keystone corrected digital image.
    Type: Grant
    Filed: October 24, 2000
    Date of Patent: December 10, 2002
    Assignee: Eastman Kodak Company
    Inventors: Stephanie S. Chen, James E. Adams, Jr.