Patents by Inventor Reika Ishijima

Reika Ishijima 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).

  • Displacement detection method, displacement detection device, displacement detection program, phase singularity matching method and phase singularity matching program
    Patent number: 7813900
    Abstract: A displacement detection method detects a displacement from phase singularities before and after the displacement, by specifying the phase singularities based on predetermined elements by acquiring the elements from a phase structure of the phase singularities, and detecting positions of the phase singularities after the displacement based on the elements acquired by specifying of the phase singularity.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: October 12, 2010
    Assignee: National University Corporation the University of Electro-Communications
    Inventors: Mitsuo Takeda, Wei Wang, Tomoaki Yokozeki, Reika Ishijima, Yu Qiao
  • Displacement Detection Method, Displacement Detection Device, Displacement Detection Program, Phase Singularity Matching Method and Phase Singularity Matching Program
    Publication number: 20090037137
    Abstract: The present invention relates to a displacement detection method for detecting a displacement from phase singularities before and after the displacement, a displacement detection device, a displacement detection program, a feature point matching method and a feature point matching program. The displacement detection method for detecting the displacement from the phase singularities before and after the displacement acquires predetermined specifies the phase singularities based on predetermined elements by acquiring the elements from a phase structure of the phase singularities, and detects positions of the phase singularities. Hence, it is possible to reliably specify the phase singularities before and after the displacement, and easily and reliably detect the displacement. Various displacements, including rotary displacement, are detectable.
    Type: Application
    Filed: January 24, 2007
    Publication date: February 5, 2009
    Inventors: Mitsuo Takeda, Wei Wang, Tomoaki Yokozeki, Reika Ishijima, Yu Qiao