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Wavelet compression and MrSID / Jin Zhang (2001)  

Public contenu dans Mapping the 21st century: the 20th International Cartographic Conference, ICC 2001, Beijing, China, August 6 - 10, 2001, vol 3. Proceedings / L. Li (2001)   Titre : Wavelet compression and MrSID Type de document : Article/Communication Auteurs : Jin Zhang, Auteur Editeur : International Cartographic Association ICA - Association cartographique internationale ACI Année de publication : 2001 Conférence : ICC 2001, 20th International Cartographic Conference ICA, Mapping the 21th century 06/08/2001 10/08/2001 Pékin Chine OA Proceedings Importance : pp 1671 - 1677 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] compression par ondelettes [Termes IGN] corrélation [Termes IGN] format d'image [Termes IGN] résolution multiple [Termes IGN] système d'information géographique [Termes IGN] transformation en ondelettes Résumé : (Auteur) There are two basic kinds of compression schemes : lossless and lossy. A lossy compression scheme has advantage that one can achieve much higher compression ratios than with lossless compression. The underlying idea of any compression scheme is to remove the correlation present in the data. The main idea of image compression and multiresolution analysis is to decompose the given function into a simpler low and high resolution detail part so that the original function can be recovered from the combination of the two parts. This process filtering the function into subbands continues recursevely on the low-resolution part until the most basic (crude) representation is reached. In wavelet analysis, named also discrete wavelet algorithm process data at different scales resolutions. MrSID, short for Multi-Resolution Seamless Image Database, utilizes a patented wavelet-based compression technology for compressing and viewing digital raster imagery. Numéro de notice : C2001-024 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : sans En ligne : https://icaci.org/files/documents/ICC_proceedings/ICC2001/icc2001/file/f11073.rt [...] Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=64932