Image analysis – Applications – Motion or velocity measuring
Reexamination Certificate
2004-12-17
2008-10-14
Johns, Andrew W. (Department: 2624)
Image analysis
Applications
Motion or velocity measuring
C348S208600, C348S208100, C348S208990, C348S402100, C382S236000, C382S199000
Reexamination Certificate
active
07436984
ABSTRACT:
The invention relates to a method for stabilizing a video recording of a scene made by a video camera and represented by video data, said method comprising the steps of subdividing said video data into a plurality of successive frames themselves divided into a plurality of blocks, determining for each block of each frame a motion vector representing the direction and magnitude of the motion in said block, said vector at an instant t being called global motion vector GMV(t) and representing said motion at the instant t with respect to the previous frame, defining a modified vector called integrated motion vector IMV(t) at the instant t and designating the final motion vector correction to be applied to the current frame in view of its motion correction, said integrated motion vector being given by the expression:IMV(t) = GMV(t)+a(E). WIV(t−1) where a(E) is a variable adaptive factor depending on an expression E and IMV(t−1) is the integrated motion vector corresponding to the previous current frame, and modifying the video data according to the modified integrated motion vectors defined for each successive current frame.
REFERENCES:
patent: 5748231 (1998-05-01), Park et al.
patent: 5926212 (1999-07-01), Kondo
patent: 6049354 (2000-04-01), Sekine et al.
patent: 6058212 (2000-05-01), Yokoyama
patent: 2006/0274156 (2006-12-01), Rabbani et al.
Bitar Nancy
Johns Andrew W.
NXP B.V.
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