Patents by Inventor Tsutomu Shohdohji

Tsutomu Shohdohji 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 reduction mosquito noise in decoded images
    Patent number: 7426313
    Abstract: A method and an apparatus of reducing the mosquito noise in a decoded image by using a noise reduction algorism that does not depend on the compression coding algorism applied to the image to be improved. The decoded compression-coded digital image is divided into blocks. The standard deviation or the “variance coefficient” of luminance values is calculated for each block of the decoded compression-coded digital image. An ? matrix for the compression-coded digital image is composed so that all components of each block of the ? matrix is filled with the standard deviations or the variance coefficients for each block. An ? filter is composed so that its ? values are expressed by the ? matrix. The decoded compression-coded digital image is applied to the ? filter to reduce the mosquito noise that arises during decoding process.
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: September 16, 2008
    Assignee: School Foundation of Nippon Institute of Technology
    Inventor: Tsutomu Shohdohji
  • Method and apparatus for reduction mosquito noise in decoded images
    Publication number: 20050117807
    Abstract: A method and an apparatus of reducing the mosquito noise in a decoded image by using a noise reduction algorism that does not depend on the compression coding algorism applied to the image to be improved. The decoded compression-coded digital image is divided into blocks. The standard deviation or the “variance coefficient” of luminance values is calculated for each block of the decoded compression-coded digital image. An ? matrix for the compression-coded digital image is composed so that all components of each block of the ? matrix is filled with the standard deviations or the variance coefficients for each block. An ? filter is composed so that its ? values are expressed by the ? matrix. The decoded compression-coded digital image is applied to the ? filter to reduce the mosquito noise that arises during decoding process.
    Type: Application
    Filed: June 7, 2004
    Publication date: June 2, 2005
    Applicant: SCHOOL FOUNDATION OF NIPPON INSTITUTE OF TECHNOLOGY
    Inventor: Tsutomu Shohdohji