Patents by Inventor Nobumichi Munesada

Nobumichi Munesada 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).

  • Patent number: 5805728
    Abstract: A method for accurately obtaining, in a short period of time, the position and slope of a specific edge line, even when there are many extraneous points caused by dust and other such garbage or electrical noise around the edge line to be obtained. A window covering the area containing the desired edge line is set, and the area inside the window is scanned at a specific interval in a direction crossing the edge line so as to obtain specific image data. The coordinates of points indicating a change in brightness in the scanning direction are obtained as edge points. The area inside the window is divided into a group of rectangular subareas parallel to the edge line to be detected and at a predetermined pitch and size capable of containing the edge line. The subarea containing the greatest number of edge points is obtained, and the edge line is then estimated from the coordinates of the edge points in this subarea containing the greatest number of edge points.
    Type: Grant
    Filed: August 21, 1995
    Date of Patent: September 8, 1998
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Nobumichi Munesada, Yoshio Kanata, Michitaro Horiuchi, Hiroki Hoshiyama