Patents by Inventor Jang-Daw Yang

Jang-Daw Yang 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 for determining background or object pixel for digitizing image data
    Patent number: 5982943
    Abstract: A method for determining whether a pixel of a digitized image is a background or object pixel includes the steps of determining whether the pixel is in a static state or a transient state according to the variation in its gray-level compared with the gray-level of an adjacent pixel located in a first direction, setting a static threshold if the pixel is in the static state or a dynamic threshold if the pixel is in the transient state, comparing the gray-level of the pixel and the applicable threshold to determine whether the pixel is a background or object pixel, and repeating the determination with respect to static or dynamic thresholds, as applicable, in a second direction.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: November 9, 1999
    Assignee: Startek Eng. Inc.
    Inventors: Wen-Hsing Hsu, Jang-Daw Yang