Mode coding method and apparatus for use in an interlaced shape

Details Mode coding method and apparatus for use in an interlaced shape Mode coding method and apparatus for use in an interlaced shape

1997-12-02

1999-10-26

Britton, Howard

Television

Bandwidth reduction system

Data rate reduction

348402, 348413, 348699, 382243, H04N 730, H04N 750

Patent

active

059737433

ABSTRACT:
A method for encoding mode signals of a target block of M.times.N pixels having a binary value `0` or `255` is provided. If the target block is determined as neither "all.sub.-- 0" nor "all.sub.-- 255", the target block is divided into a top field and a bottom field, wherein the top field contains every odd row of the target block to have M/2.times.N pixels and the bottom field contains every even row of the target block to have M/2.times.N pixels. After encoding the top field, the method encodes the bottom field based on the top field to generate modified bottom field-coded data and a modified bottom mode.

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N. Brady et al., "Context-Based Arithmetic Encoding of 2D Shape" Proceedings of The International Conference on Image Processing, Oct. 26-29, 1997, pp. 29-32.
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