Method of synthesizing interframe predicted image, and image...

Details Method of synthesizing interframe predicted image, and image... Method of synthesizing interframe predicted image, and image...

2006-02-28

2006-02-28

Lee, Richard (Department: 2613)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

Reexamination Certificate

active

07006571

ABSTRACT:
A method is provided to simplify the computation involved in global motion compensation and warping prediction in coding and decoding of motion compensated image signals. In the synthesis of a global motion compensated predicted image1203which predicts a current frame image from an immediately preceding frame image1202using motion vectors1205of plural representative points having a particular spatial interval in an image frame, a first interpolation/extrapolation1207is performed to calculate motion vectors of provisional representative points from motion vectors1206of representative points, and a second interpolation/extrapolation1209is then performed to calculate motion vectors1210for each pixel from motion vectors1208of the provisional representative points. A division performed when the predicted image is synthesized can be replaced by a shift computation involving a smaller number of bits, so the processing carried out by a computer or special hardware can be simplified.

REFERENCES:
patent: 632657 (1995-01-01), None
patent: 797357 (1997-09-01), None
patent: 797357 (1997-09-01), None
patent: 08065675 (1994-08-01), None

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