Patents by Inventor Yuh Nakajima

Yuh Nakajima 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 describing a character image based on its contours, and for classifying the character image for character recognition based on a resulting contour-based description of the character image
    Patent number: 5426712
    Abstract: A code set includes a first type of code for indicating a maximal point of a contour of an image, and a second type of code for indicating a minimal point of the contour of the image. The code set may include a third type of code for indicating a state of a switching pair which is a pair of a maximal point and a minimal point on the contours. Each of contours of are described by arrangement of the first type code and the second type of code or a combination of the third code and the arrangement of the first type of code and the second type of code. Each of the first and second types of codes may comprises a convex type of code and a concave type of code, the convex type of code indicating the maximal point on the contour of a convex part of the image, and the concave type of code indicating the maximal point on the contour of a concave part of the image.
    Type: Grant
    Filed: April 19, 1993
    Date of Patent: June 20, 1995
    Assignee: Ricoh Company, Ltd.
    Inventor: Yuh Nakajima