Method and apparatus for encoding a motion vector based on the n

Details Method and apparatus for encoding a motion vector based on the n Method and apparatus for encoding a motion vector based on the n

1997-09-25

1999-11-02

Britton, Howard

Television

Image signal processing circuitry specific to television

Motion vector generation

348402, 348413, 348416, H04N 732

Patent

active

059780487

ABSTRACT:
A current motion vector is encoded based on reference motion vectors. First, the number of valid reference motion vectors is counted. According to the number of the valid reference motion vectors, a predictor for the current motion vector is determined. That is, the predictor is determined with a horizontal and a vertical components representing medians of the horizontal and the vertical components of the valid reference motion vectors, or most precedent components of the horizontal and vertical components of the valid reference motion vectors, or 0's. The current motion vector is encoded based on the predictor by using the differential pulse coding technique and the variable length coding scheme.

REFERENCES:
patent: 5767911 (1998-06-01), Boon
patent: 5805221 (1998-09-01), Lee
patent: 5812787 (1998-09-01), Astle
patent: 5818531 (1998-10-01), Yamaguchi

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