Patents by Inventor Tetsumi Kawamoto

Tetsumi Kawamoto 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).

  • Dilation/erosion conversion circuit
    Patent number: 4980923
    Abstract: A circuit for processing a dilation conversion and erosion conversion of a digital image data to extract the feature of the image. A range N.times.N of the image data is processed by a simple circuit construction which a horizontal row extraction circuit holding N data and a conversion stage for converting N data are disposed in a crisscross arrangement.
    Type: Grant
    Filed: February 2, 1989
    Date of Patent: December 25, 1990
    Assignee: Seiko Instruments Inc.
    Inventors: Tetsumi Kawamoto, Shuichi Wakabayashi, Toshiyuki Yamada, Yuko Murayama
  • Maximum/minimum value conversion circuit for image processing
    Patent number: 4809343
    Abstract: A circuit for processing a maximum value conversion and a minimum value conversion of a digital image data to extract the feature of the image. A range N.times.N of the image data is processed by a simple circuit construction which comprises a horizontal row maximum value selection circuit for selecting the maximum value along N data and N numbers of maximum value selection circuits for comparing N vertical column data with the output data of the horizontal row maximum value selection circuit.
    Type: Grant
    Filed: September 21, 1987
    Date of Patent: February 28, 1989
    Assignee: Seiko Instruments Inc.
    Inventors: Shuichi Wakabayashi, Tetsumi Kawamoto, Toshiyuki Yamada, Yuko Murayama