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TRANSLATION-INVARIANT WAVELET IMAGE CODER

IP.com Disclosure Number: IPCOM000009700D
Original Publication Date: 2000-Jan-01
Included in the Prior Art Database: 2002-Sep-11

Publishing Venue

Motorola

Related People

Authors:
Glen P. Abousleman

Abstract

We propose an image coder that uses a fast algo- rithm for calculating the two-dimensional wavelet transforms for all circular translates of a N X N input image. The optimal translate for the decom- position is selected by using a quadtree search algo- rithm and a scale-separable cost criterion. Once the optimum translate has been identified, a modified wavelet tree is formed. The resulting wavelet coef- ficients are encoded using trellis-coded quantization.