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Titolo:
Categorisation and retrieval of scene photographs from a JPEG compressed database
Autore:
Ladret, P; Guerin-Dugue, A;
Indirizzi:
Inst Natl Polytech Grenoble, LIS, F-38031 Grenoble, France Inst Natl Polytech Grenoble Grenoble France F-38031 031 Grenoble, France
Titolo Testata:
PATTERN ANALYSIS AND APPLICATIONS
fascicolo: 2-3, volume: 4, anno: 2001,
pagine: 185 - 199
SICI:
1433-7541(2001)4:2-3<185:CAROSP>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
IMAGE;
Keywords:
categorisation; compression; DCT; indexation; JPEG; orientations features;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Ladret, P Inst Natl Polytech Grenoble, LIS, 46 Ave Felix Viallet, F-38031 Grenoble, France Inst Natl Polytech Grenoble 46 Ave Felix Viallet GrenobleFrance F-38031
Citazione:
P. Ladret e A. Guerin-Dugue, "Categorisation and retrieval of scene photographs from a JPEG compressed database", PATTERN A A, 4(2-3), 2001, pp. 185-199

Abstract

Natural image categorisation and retrieval is the main challenge for imageindexing. With the increase of available images and video databases, thereis a real need to, first, organise the database automatically according todifferent semantic groups, and secondly, to take into account these large databases where most: of the data is stored in a compressed form. The global distribution of orientation features is a very powerful tool to semantically organise the database into groups, such as outdoor urban scenes, indoorscenes,'closed' landscapes (valleys, mountains. forests, etc.) and 'open' Landscapes (deserts, fields, beaches, etc.). The constraint of a JPEG compressed database is completely integrated with an efficient implementation ofan orientation estimator in the DCT (Discrete Cosinus Transform) domain. The proposed estimator is analysed from different points of view (accuracy and discrimination power). The images are then globally characterised by a set of a few parameters (two or three), allowing a fast scenes categorisation and organisation which, is very robust to the quantisation effect, up to a quality factor of 10 in the JPEG format.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 06:58:27