Patent Document ID: 6141453
Application ID: 09022264
Patent Status: 1

Claim One:
1. A method of error control of a wavelet-based image codec, wherein wavelet coefficients are encoded using entropy coding, comprising the steps of: A) utilizing, in a decoder, control information and a plurality of resynchronization markers inserted at arbitrary positions in a wavelet-based image bitstream wherein the control information provides decoding information for decoding at least a forward sequence of wavelet coefficients; B) detecting errors in an image bitstream and limiting propagation of errors in a decoded image utilizing the control information and the plurality of resynchronization markers, wherein the control information includes an absolute restart address in a predetermined wavelet-based image decomposition scheme, and wherein the absolute restart address includes at least one of: C) an absolute subband address in a predetermined wavelet decomposition scheme; D) an absolute spatial position address in a predetermined wavelet subband coefficient-scanning scheme; E) an absolute class address in a predetermined wavelet coefficient classification scheme; and F) an absolute coefficient accuracy value in a predetermined variable coefficient accuracy wavelet-coding scheme.