Patents by Inventor Shohei Nakagata

Shohei Nakagata 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).

  • Block noise detecting method and apparatus, and block noise reducing method and apparatus
    Publication number: 20070223835
    Abstract: A pixel boundary difference detector detects a pixel boundary difference across a pixel boundary on the basis of a difference value between pixel values of adjacent pixels across the pixel boundary on a picture plane of an input image frame, and a predicted pixel value on the pixel boundary predicted from at least a plurality of pixels on one side of the pixel boundary, an accumulator accumulates the pixel boundary differences for one image frame, and a block noise detector detects a block noise on the basis of a result of the accumulation. The accuracy of block noise detection is improved, the effect of block noise reduction is improved, and the picture quality is improved.
    Type: Application
    Filed: August 1, 2006
    Publication date: September 27, 2007
    Applicant: Fujitsu Limited
    Inventors: Kohji Yamada, Shohei Nakagata