Appeal No. 2006-1240
Application No. 10/075,839
one image in a sequence of video images. According to Appellants,
since a movement-vectors field is temporally uniform over a video
sequence and undergoes very little time-domain variation, detecting
instability in the time-domain suggests unreliable movement-vectors
field (specification, paragraph bridging pages 1-2). In order to
detect the reliability of a field of movement vectors, Appellants
provide for a process that includes comparing the number of
occurrences of the majority of vectors over two successive images
and deciding on reliability on the basis of whether this measure
lies within a predetermined bracket (specification, page 2).
Representative independent claim 1 is reproduced below:
1. Method of detecting the reliability of a field of movement
vectors of one image in a sequence of video images, characterized
in that it includes a stage of calculating a stability parameter
Det_Stab(t) for the field, on the basis of a comparison (4), over
two successive images, of the number of occurrences of the majority
vectors of the movement-vectors fields of each of these images, a
field being defined as stable if the variation in the number of
occurrences lies within a predefined bracket, and a stage of
deciding on reliability (7) on the basis of this stability
parameter.
The Examiner relies on the following references in rejecting
the claims:
Avis et al. (Avis) 4,864,398 Sep. 5, 1989
Zhu 6,462,791 Oct. 8, 2002
(filed Jun. 30, 1997)
2
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