Efficient motion vector coding for video compression

Details Efficient motion vector coding for video compression Efficient motion vector coding for video compression

2004-06-30

2008-08-05

Rao, Andy S (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240170, C375S240230

Reexamination Certificate

active

07408990

ABSTRACT:
Video coding efficiency is improved by jointly coding the x and y components of motion vectors with a single variable length code. The motion vector components for a block of pixels are predicted based on motion vectors of neighboring blocks of pixels. The predicted x and y components are then jointly coded by assigning a single variable length code corresponding to the pair of components, rather than a separate code for each component. If the x and y components do not have a corresponding entry in the coding table, they are coded with an escape code followed by fixed length codes.

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