Patents by Inventor Renqi Zhang

Renqi Zhang 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).

  • High performance loop filters in video compression
    Patent number: 8630356
    Abstract: Disclosed are a filter and a method to improve the objective and subjective video coding performance The filter comprises: a parameter estimation unit configured to determine means and variances from a pilot frame; a filter unit configured to receive quantized residual coefficients in video coding process and restore coefficients from the quantized residual coefficients and the determined means and variances; an inverse ICT unit configured to apply an inverse ICT to the restored coefficients to obtain a filtered frame; a rate-distortion optimization unit configured to determine a quadtree block partition index; and an adaptive block selection unit configured to select final blocks according to quadtree block partition index, the final blocks being utilized to form the filtered frame.
    Type: Grant
    Filed: January 4, 2011
    Date of Patent: January 14, 2014
    Assignee: The Chinese University of Hong Kong
    Inventors: Renqi Zhang, Wai Kuen Cham
  • HIGH PERFORMANCE LOOP FILTERS IN VIDEO COMPRESSION
    Publication number: 20120170668
    Abstract: Disclosed are a filter and a method to improve the objective and subjective video coding performance The filter comprises: a parameter estimation unit configured to determine means and variances from a pilot frame; a filter unit configured to receive quantized residual coefficients in video coding process and restore coefficients from the quantized residual coefficients and the determined means and variances; an inverse ICT unit configured to apply an inverse ICT to the restored coefficients to obtain a filtered frame; a rate-distortion optimization unit configured to determine a quadtree block partition index; and an adaptive block selection unit configured to select final blocks according to quadtree block partition index, the final blocks being utilized to form the filtered frame.
    Type: Application
    Filed: January 4, 2011
    Publication date: July 5, 2012
    Applicant: THE CHINESE UNIVERSITY OF HONG KONG
    Inventors: Renqi Zhang, Wai Kuen Cham