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:
May. 27, 2014
Filed:
Jul. 21, 2011
Huipin Zhang, Santa Clara, CA (US);
Jing Wu, Zhejiang, CN;
Sijia Chen, Zhejiang, CN;
Dunbi Huang, Zhejiang, CN;
Yi Guo, Zhejiang, CN;
Huipin Zhang, Santa Clara, CA (US);
Jing Wu, Zhejiang, CN;
Sijia Chen, Zhejiang, CN;
Dunbi Huang, Zhejiang, CN;
Yi Guo, Zhejiang, CN;
Cisco Technology, Inc., San Jose, CA (US);
Abstract
In one embodiment, a perceptual video coder obtains local video content, and calculates a feature index for each of one or more features of a video unit of the local video content. Each feature index is then directly mapped to a delta quantization parameter (QP) using a linear fractional model that explicitly establishes a relation between the delta QP and a Human Visual System (HVS) insensitivity index, e.g., where the delta QP is set based on a comparison between a local strength of the HVS insensitivity index and an overall strength of a particular frame of the local video content. Accordingly, a QP of an adaptive quantization may be refined by adding to it each delta QP, such that adaptive quantization may be performed on the video unit based on the refined QP.