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:
Feb. 18, 2014
Filed:
Jul. 08, 2010
Tao-sheng Ou, Taipei, TW;
Yi-hsin Huang, Taipei, TW;
Po-yen Su, Taipei, TW;
Homer H. Chen, Taipei, TW;
Tao-Sheng Ou, Taipei, TW;
Yi-Hsin Huang, Taipei, TW;
Po-Yen Su, Taipei, TW;
Homer H. Chen, Taipei, TW;
National Taiwan University, Taipei, TW;
Abstract
A rate control method of perceptual-based rate-distortion (R-D) optimized bit allocation is disclosed. An input frame is firstly determined as a key frame or non-key frame. A key frame is additionally encoded to generate rate-distortion (R-D) points. The R-D model of each basic unit (BU) is updated, followed by perceptual-based bit allocation, thereby generating a target bit rate. A quantization parameter (QP) is computed according to the target bit rate, and the current BU is encoded according to the QP. A rate-quantization (R-Q) model is updated if not all BUs have been encoded.