Patents by Inventor Paik Joon-Ki

Paik Joon-Ki 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).

  • Apparatus and method for image interpolation based on low pass filtering
    Patent number: 8208748
    Abstract: An apparatus and method for image interpolation based on low pass filtering are provided. The apparatus includes an edge direction detector detecting an edge direction for a pixel nearest to a to-be-interpolated pixel among pixels and determining the edge direction of the to-be-interpolated pixel as the detected edge direction, a pixel value calculator calculating pixel values of interpolation points located in a lattice filtering window having a predetermined size by using pixel values of pixels located adjacent to the interpolation points, and a filtering unit performing low pass filtering on the to-be-located pixel according to a low pass filter corresponding to the determined edge direction of the to-be-interpolated pixel, the low pass filter being one of low pass filters corresponding to predetermined vertical, horizontal, left diagonal and right diagonal directions respectively.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: June 26, 2012
    Assignee: Chung-Ang University Industry Academy Cooperation Foundation
    Inventors: Paik Joon-Ki, Yoon-Jong Yoo, Jin-Young Youn, Dong-Gyun Kim, Jeong-Ho Shin
  • APPARATUS AND METHOD FOR IMAGE INTERPOLATION BASED ON LOW PASS FILTERING
    Publication number: 20090238488
    Abstract: An apparatus and method for image interpolation based on low pass filtering are provided. The apparatus includes an edge direction detector detecting an edge direction for a pixel nearest to a to-be-interpolated pixel among pixels and determining the edge direction of the to-be-interpolated pixel as the detected edge direction, a pixel value calculator calculating pixel values of interpolation points located in a lattice filtering window having a predetermined size by using pixel values of pixels located adjacent to the interpolation points, and a filtering unit performing low pass filtering on the to-be-located pixel according to a low pass filter corresponding to the determined edge direction of the to-be-interpolated pixel, the low pass filter being one of low pass filters corresponding to predetermined vertical, horizontal, left diagonal and right diagonal directions respectively.
    Type: Application
    Filed: March 20, 2009
    Publication date: September 24, 2009
    Applicant: Chung-Ang University Industry-Academy Cooperation Foundation
    Inventors: Paik Joon-Ki, Yoon-Jong Yoo, Jin-Young Youn, Dong-Gyun Kim, Jeong-Ho Shin