Detecting video format information in a sequence of video...

Details Detecting video format information in a sequence of video... Detecting video format information in a sequence of video...

2011-07-19

2011-07-19

Harold, Jefferey (Department: 2422)

Television

Basic receiver with additional function

Multimode

C348S700000, C348S571000, C348S441000

Reexamination Certificate

active

07982805

ABSTRACT:
Gradient analysis may be utilized to determine frame and field repeat patterns in input video data. Those frame and field repeat patterns may then be analyzed to match them with characteristic patterns associated with telecine 3:2 and 2:2 pulldown video data, for example. In addition, a progressive detector may use combing analysis to determine whether or not a particular field is progressive or interlaced data. Then, this information, together with a field flag which indicates whether field or frame analysis is appropriate, may be utilized to distinguish telecine 2:2 or 3:2 pulldowns and interlaced and progressive data in some embodiments.

REFERENCES:
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patent: 0 720 367 (1996-07-01), None
patent: WO 2006/071835 (2006-07-01), None
Jorge E. Caviedes, U.S. Appl. No. 11/021,779, filed Dec. 23, 2004, entitled “Method and Algorithm for Detection of Scene Cuts or Similar Images in Video Images”.
A. Bovyrin et al.,Fast Extraction of Scene Structure Based on Gradient Runs Analysis, Proceedings 2002 Intl. Conference on Image Processing, ICIP 2002, Rochester, NY, Sep. 22-25, 2002, IEEE, US, vol. 2 of 3, Sep. 22, 2002, pp. 757-760.

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