System for interactive visualization and analysis of imaging...

H - Electricity – 04 – N

Patent

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H04N 7/50 (2006.01) G01J 3/02 (2006.01) G06T 9/00 (2006.01)

Patent

CA 2219809

A method of compressing hyper-spectral data for processing thereof and a method of processing the data so compressed is disclosed. The method comprises selecting a set a spectra as a codebook and determining for each spectrum in the hyper-spectral data a spectrum within the codebook that is a closest match thereto and replacing the spectrum in the hyper-spectral data with an index associated with the spectrum within the codebook. The resulting compressed data may be displayed, filtered, transformed, analysed for spectral peaks or spectral contents, and transmitted all without a need to expand the data.

L'invention est constituée par une méthode de compression de données hyperspectrales en vue de les soumettre à un traitement, et par une méthode de traitement des données ainsi comprimées. La méthode de compression de l'invention consiste à sélectionner un spectre comme élément de codage dans un ensemble et à déterminer, pour chaque spectre des données hyperspectrales, le spectre qui s'en rapproche le plus dans l'élément de codage et à remplacer le spectre faisant partie des données hyperspectrales par un indice associé au spectre qui se trouve dans l'élément de codage. Les données comprimées résultantes peuvent être affichées, filtrées, transformées et analysées en rapport avec leurs crêtes spectrales ou leur contenu spectral, et être transmises intégralement sans expansion.

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