Patents by Inventor Du Jiyun

Du Jiyun 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 apparatus, image processing method and computer readable medium
    Patent number: 9153013
    Abstract: An image processing method comprising, dividing an input image into a plurality of divided images, calculating a difference image between a divided image before noise removal and a divided image after noise removal for each of the plurality of divided images, calculating a relative value between a pixel intensity in the divided image before noise removal and a pixel intensity in the difference image for each of the plurality of divided images, detecting a frequency distribution of relative values in a background area of the input image, contained in frequency distribution of relative values calculated with respect to the plurality of divided images, and estimating an intensity of noise in accordance with the frequency distribution of the relative values in the background area.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: October 6, 2015
    Assignee: PFU LIMITED
    Inventor: Du Jiyun
  • IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD AND COMPUTER READABLE MEDIUM
    Publication number: 20140140620
    Abstract: An image processing method comprising, dividing an input image into a plurality of divided images, calculating a difference image between a divided image before noise removal and a divided image after noise removal for each of the plurality of divided images, calculating a relative value between a pixel intensity in the divided image before noise removal and a pixel intensity in the difference image for each of the plurality of divided images, detecting a frequency distribution of relative values in a background area of the input image, contained in frequency distribution of relative values calculated with respect to the plurality of divided images, and estimating an intensity of noise in accordance with the frequency distribution of the relative values in the background area.
    Type: Application
    Filed: June 17, 2013
    Publication date: May 22, 2014
    Inventor: Du Jiyun