Method of video content complexity estimation, scene change...

Details Method of video content complexity estimation, scene change... Method of video content complexity estimation, scene change...

2011-06-14

2011-06-14

Tieu, Benny Q (Department: 2625)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240130, C375S240000, C382S173000, C382S239000, C382S232000, C382S238000

Reexamination Certificate

active

07961787

ABSTRACT:
Methods of video content complexity estimation, scene change detection and video encoding are provided. The video content complexity estimation and the scene change detecting are performed before a video encoding loop is processed. The method of video content complexity estimation includes calculating an absolute difference value diffiof the ithpixel between a current frame and a reference frame, a mean value mean(R) of pixel region R, a deviation value deviation(R) of pixel region R, a complexity value X of a target frame and an adjusted complexity Ĉtargetof the target frame by using equationsmean⁢⁢(R)=1NM⁢∑i∈R⁢diffi,⁢deviation⁢⁢(R)=∑i∈R⁢abs(diffi-mean(R)),⁢X=∑R∈frame⁢mean⁢⁢(R)·deviation⁢⁢(R)and Ĉtarget=a·X/b, respectively. Wherein, R represents N*M pixel region, a=b·SADtarget/X, b is power of 2 and SADtargetrepresents a true motion compensation sum of absolute difference for the target frame.

REFERENCES:
patent: 2002/0159521 (2002-10-01), Yan et al.
patent: 2003/0039308 (2003-02-01), Wu et al.
patent: 2004/0091045 (2004-05-01), Chang et al.
patent: 2007/0147512 (2007-06-01), Eckart

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