Patents by Inventor Tatsuo Ushiki

Tatsuo Ushiki 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).

  • Image processing method, image processing device and recording medium on which image processing program is recorded
    Patent number: 7760963
    Abstract: A method employing a statistic means to test whether or not luminance signals around a point of interest are distributed according to the same probability distribution with respect to luminance signals of respective pixels constituting the image; determining a range where the same probability distribution can be regarded as being satisfied, estimating the true luminance value of the point of interest by using the luminance data of the range. Especially when the image signals are faint to such an extent that the intensity of the luminance signal is based on the Poisson distribution, it is effective to perform a smoothing processing for each of the probability distributions of the signals and the noises by a test of a uniformity of the Poisson distribution, enabling a clear and denoised image to be obtained.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: July 20, 2010
    Assignee: Niigata University
    Inventors: Takayuki Matsuto, Kohei Akazawa, Shin-ichi Toyabe, Tatsuo Ushiki
  • Image Processing Method, Image Processing Device and Recording Medium on Which Image Processing Program is Recorded
    Publication number: 20080292208
    Abstract: A method employing a statistic means to test whether or not luminance signals around a point of interest are distributed according to the same probability distribution with respect to luminance signals of respective pixels constituting the image; determining a range where the same probability distribution can be regarded as being satisfied, estimating the true luminance value of the point of interest by using the luminance data of the range. Especially when the image signals are faint to such an extent that the intensity of the luminance signal is based on the Poisson distribution, it is effective to perform a smoothing processing for each of the probability distributions of the signals and the noises by a test of a uniformity of the Poisson distribution, enabling a clear and denoised image to be obtained.
    Type: Application
    Filed: December 7, 2005
    Publication date: November 27, 2008
    Applicant: Niigata University
    Inventors: Takayuki Matsuto, Kohei Akazawa, Shin-ichi Toyabe, Tatsuo Ushiki