Patents by Inventor Masatoshi Tuneda

Masatoshi Tuneda 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 compression device and image compression method for compressing images by smoothing them, reversibly compressing the residual images and compressing the smoothed images based on fractal theory
    Patent number: 5862264
    Abstract: An image compression device comprises an image smoothing device which produces a smooth image by performing a smoothing process on an original image, an edge detection device which produces an edge image by subtracting said smoothed image from said original image, a fractal encoding device which encodes said smoothed image by fractal image compression, a reversible encoding device which encodes said edge image by reversible image compression, and an output device which combines the output of said fractal encoding means and the output of said reversible encoding means, and outputs said data as compressed data of the original image.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: January 19, 1999
    Assignee: Minolta Co., Ltd.
    Inventors: Atsushi Ishikawa, Masatoshi Tuneda, Shinji Yamamoto