Patent ID: 6724940
Filing Date: 2004-04-20
Classification: H04N

Abstract:
A method for encoding a hyper-spectral image datacube using vector quantisation, wherein the encoded hyper-spectral data is compressed data, the method comprising the steps of:a) determining a codebook having a plurality of codevectors; b) encoding each spectral vector of the hyper-spectral data by determining a codevector within the codebook that approximates the spectral vector within the hyper-spectral data; c) determining a fidelity of a cluster of the spectral vectors encoded with a subset of at least a codevector; and, d) when the fidelity of a cluster of spectral vectors encoded by the subset of at least a codevector is below a predetermined fidelity, determining a further codebook relating to the subset of the at least a codevector, encoding each spectral vector of the cluster of vectors encoded by at least a codevector within the subset using the further codebook, and returning to step (c).