Method to stabilize digital video motion

Details Method to stabilize digital video motion Method to stabilize digital video motion

2005-01-18

2009-02-10

Tran, Sinh N (Department: 2622)

Television

Camera, system and detail

Camera image stabilization

C348S208400, C348S208600

Reexamination Certificate

active

07489341

ABSTRACT:
A digital video image stabilization method features scene change detection, adaptive stabilization in two dimensions, prevention of accumulated-compensation saturation, multi-resolution motion estimation, and compatibility with MPEG video encoding standards. The method uses block-based motion estimation on a selected set of macroblocks, which generates and validates a set of motion vectors, to determine how a digital camcorder or other video recording device is moving; accumulates motion data to estimate and preserve overall motion due to panning while eliminating small variations due to shaking; and resets its accumulated motion data when it detects a scene change. The method uses this information to select a sub-image from a larger image for the selected video frame. When one or more edges of the sub-image approach the edges of the larger image, the method reduces its correction factor to transition smoothly to a faster pan and prevent saturation.

REFERENCES:
patent: 5629988 (1997-05-01), Burt et al.
patent: 6130709 (2000-10-01), Sekine et al.
patent: 6809758 (2004-10-01), Jones
patent: 2005/0179784 (2005-08-01), Qi
patent: 2006/0066728 (2006-03-01), Batur

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