Process for precisely identifying a desired location on a video

Details Process for precisely identifying a desired location on a video Process for precisely identifying a desired location on a video

1998-04-22

1999-06-29

Nguyen, Huy T.

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

386111, H04N 576

Patent

active

059179902

ABSTRACT:
A process that allows precise control of the tape position in consumer videotape devices, such as camcorders, for the purpose of video editing. The process involves the use of a software algorithm within the central processing unit of a computer to locate a specific video frame with digitized video. The process first involves storing an initial set of calculated scene detection data, including luminance and change of luminance values for each video frame. Then, at the time of the video editing, a second set of scene detection data from the videotape is taken at a reference point, near the location of the desired frame. The second set of scene detection data is compared to the first set of scene detection data to determine whether there is any offset between the expected location of the frame, as shown in the first set of scene detection data, and the actual location of the desired frame, as shown in the second set of scene detection data. If there is any offset, the videotape can then be adjusted by the determined amount of offset to locate the desired frame.

REFERENCES:
patent: 5365384 (1994-11-01), Choi
patent: 5532773 (1996-07-01), Shaw et al.
patent: 5546191 (1996-08-01), Hibi et al.
patent: 5587789 (1996-12-01), Lee et al.
patent: 5642285 (1997-06-01), Woo et al.
patent: 5659367 (1997-08-01), Yuen

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