Search results for "Data association"

showing 3 items of 3 documents

A Data Association Algorithm for People Re-Identification in Photo Sequences

2010

In this paper, a new system is presented to support the user in the face annotation task. Every time a photo sequence becomes available, the system analyses it to detect and cluster faces in set corresponding to the same person. We propose to model the problem of people re-identification in photos as a data association problem. In this way, the system takes advantage from the assumption that each person can appear at most once in each photo. We propose a fully automated method for grouping facial images, the method does not require any initialization neither a priori knowledge of the number of persons that are in the photo sequence. We compare the results obtained with our method and with s…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniComputer sciencebusiness.industryFeature extractionInitializationPattern recognitionSensor fusionFacial recognition systemSet (abstract data type)Face (geometry)Photo Album Management Data Association Re- Identification Image databasesA priori and a posterioriArtificial intelligenceCluster analysisbusiness
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An on-line learning method for face association in personal photo collection

2012

Due to the widespread use of cameras, it is very common to collect thousands of personal photos. A proper organization is needed to make the collection usable and to enable an easy photo retrieval. In this paper, we present a method to organize personal photo collections based on ''who'' is in the picture. Our method consists in detecting the faces in the photo sequence and arranging them in groups corresponding to the probable identities. This problem can be conveniently modeled as a multi-target visual tracking where a set of on-line trained classifiers is used to represent the identity models. In contrast to other works where clustering methods are used, our method relies on a probabilis…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniInformation retrievalComputer sciencebusiness.industrySemi-supervised learningUSableDigital libraryMachine learningcomputer.software_genreSet (abstract data type)Face descriptor Data association On-line learning Semi-supervised learning Digital librariesFace (geometry)Signal ProcessingIdentity (object-oriented programming)Eye trackingComputer Vision and Pattern RecognitionArtificial intelligencebusinessCluster analysiscomputer
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A data association approach to detect and organize people in personal photo collections

2011

In this paper we present a method to automatically segment a photo sequence in groups containing the same persons. Many methods in literature accom- plish to this task by adopting clustering techniques. We model the problem as the search for probable associations between faces detected in subsequent photos con- sidering the mutual exclusivity constraint: a person can not be in a photo two times, nor two faces in the same photo can be assigned to the same group. Associations have been found considering face and clothing descriptions. In particular, a two level architecture has been adopted: at the first level, associations are computed within meaningful temporal windows (situations); at the …

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniSequenceDigital library Personal photo album Data association Re-identificationInformation retrievalComputer Networks and CommunicationsComputer scienceDigital librarycomputer.software_genreTask (project management)Constraint (information theory)Hardware and ArchitectureData associationFace (geometry)Media TechnologyData miningCluster analysiscomputerSoftware
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