The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 20, 2011
Filed:
Oct. 06, 2005
Sumankar Shankar, Chennai, IN;
Prasanna Ganesan, Menlo Park, CA (US);
Sumankar Shankar, Chennai, IN;
Prasanna Ganesan, Menlo Park, CA (US);
Vudu, Inc., Santa Clara, CA (US);
Abstract
Techniques for minimizing blocking artifacts in video images or frames are disclosed. In general, these blocking artifacts are the result of block-based compression standards, such as MPEG-1, MPEG-2, MPEG-4, H.261, H.263, and H.264. According to one aspect of the present invention, a blurring process is configured to replace pixels on the blocking boundaries with randomly selected pixels within respective regions, each of the regions is predefined with respect to a pixel being replaced. In a certain perspective, a blocking boundary is diffused without introducing blurring to other than the blocking artifacts. According to another aspect to the present invention, pixels in an image or frame are sequentially processed by a moving average process that is configured to smooth only those pixels that may cause subjective perception of the blocking artifacts.