Extracting key frames from a video sequence

Details Extracting key frames from a video sequence Extracting key frames from a video sequence

2006-01-26

2008-12-23

Lee, Young (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C348S701000

Reexamination Certificate

active

07469010

ABSTRACT:
A method of extracting key frames from a video sequence, which video sequence includes MPEG compressed video data having block motion vectors. The method initially partially decompresses (202) the MPEG compressed video data to obtain block motion vectors and converts (204) the block motion vectors to forward block motion vectors. The method then generates (206) global motion signals and generates (306) dominant global direction clusters. The method then selects (402,404,406) potential key frames of the video sequence using the generated dominant global direction clusters. The method lastly decompresses (408) the selected key frames to obtain the extracted key frames.

REFERENCES:
patent: 5995095 (1999-11-01), Ratakonda
patent: 2003/0046581 (2003-03-01), Call et al.
patent: 98/52356 (1998-11-01), None
patent: 889 652 (1999-01-01), None
patent: 2308774 (1997-07-01), None
Y. T. Tse, et al., “Global Zoom/Pan Estimation and Compensation for Video Compression”, Proc. ICASS-91, vol. 4, Multidimensional Signal Processing, IEEE, Ontario, Canada (1991), pp. 2725-2728.
A. K. Jain, “Fundamentals of Digital Image processing”, Prentice Hall, Inc., Englewood Cliffs, N.J. (1989), Contents and pp. 381-390.

Affiliated with

Also associated with

Rating

Extracting key frames from a video sequence does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Extracting key frames from a video sequence, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extracting key frames from a video sequence will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4047046