Video encoding using rearrangement of transform coefficients and

Details Video encoding using rearrangement of transform coefficients and Video encoding using rearrangement of transform coefficients and

1996-12-20

1998-10-13

Tung, Bryan

Television

Bandwidth reduction system

Data rate reduction

348420, H04N 730

Patent

active

058220003

ABSTRACT:
A frame of a video signal, wherein the frame is divided into non-overlapping blocks of M.times.N pixels, M and N being positive integers, respectively, is encoded by: arranging the blocks into groups of P.times.Q blocks, P and Q being positive integers, respectively; transforming each of the P.times.Q blocks in a group into a set of M.times.N transform coefficients by using a predetermined transform method, to thereby provide P.times.Q sets of M.times.N transform coefficients for the group, the transform coefficients in a set representing different frequency components; rearranging the P.times.Q sets of M.times.N transform coefficients to generate M.times.N sets of P.times.Q rearranged coefficients, the rearranged coefficients in a set being of an identical frequency component; and setting M.times.N sets of P.times.Q rearranged coefficients as encoded data for the group of P.times.Q block.

REFERENCES:
patent: 5045938 (1991-09-01), Sugiyama
patent: 5329318 (1994-07-01), Keith
patent: 5369439 (1994-11-01), Matsuda et al.

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