Television – Image signal processing circuitry specific to television – Motion vector generation
Patent
1995-12-27
1998-06-02
Chin, Tommy P.
Television
Image signal processing circuitry specific to television
Motion vector generation
348416, H04N 7133, H04N 712, H04N 732
Patent
active
057608466
ABSTRACT:
An apparatus for determining a set of motion vectors for a set of feature points located on a contour of a moving object of a video signal comprises a contour displacement detection circuit for detecting a contour displacement range between a previous contour of the moving object contained in the previous frame and a current contour of the moving object contained in the current frame; and a feature point motion estimation circuit for comparing one of feature point blocks, having one of the feature points, with each of candidate blocks derived from a corresponding feature point search region adaptively regulated by the contour displacement range and for assigning a spatial displacements between one of the feature point block and a most similar candidate block thereto as a motion vector for a feature point corresponding to the one to thereby generating the set of motion vectors for the set of feature points.
REFERENCES:
patent: 5537155 (1996-07-01), O'Connell et al.
patent: 5546129 (1996-08-01), Lee
patent: 5581308 (1996-12-01), Lee
patent: 5598216 (1997-01-01), Lee
patent: 5650828 (1997-07-01), Lee
Huang, C-L, A New Motion Compensation Method for Image Sequence Coding Using Hierarchical Grid Interpolation, IEEE TC&S, vol. 4. No. 1, pp. :42-51, Feb. 1994.
Chin Tommy P.
Daewoo Electronics Co. Ltd.
Vincent David R.
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