06795584 is referenced by 170 patents.

A method and system for coding an image using context-based adaptive VLC where transform coefficients are partitioned into blocks having a block dimension of 4n×4m (with n, m being positive integer equal to or greater than 1). Each block is scanned in a zigzag manner to produce an ordered vector of coefficients having a length of 16n×m. The ordered vector is sub-sampled in an interleaved manner to produce n×m sub-sampled sequences of transform coefficients prior to encoding the transform coefficients using an entropy encoder.

Title
Context-based adaptive variable length coding for adaptive block transforms
Application Number
10/264279
Publication Number
6795584 (B2)
Application Date
October 3, 2002
Publication Date
September 21, 2004
Inventor
Justin Ridge
Sachse
TX, US
Marta Karczewicz
Irving
TX, US
Agent
Ware Fressola Van Der Sluys & Adolphson
US
Assignee
Nokia Corporation
US
IPC
G06K 9/36
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