2026-04-14T07:16:45Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/4085562026-04-08T03:11:23Zcom_2072_98col_2072_378192

Toward a perceptual object recognition system Awad, Dounia Computer vision Advisor/s: Vincent Courboulay and Arnaud Revel. Date and location of PhD thesis defense: 5 September 2014, University of La Rochelle The main objective of this thesis is to propose a pipeline for an object recognition algorithm based on human perception which addresses the object recognition system complexity: query run time and memory allocation. In this context, we propose a filter based on a visual attention system to address the problems of extracting a large number of points of interest using existing region selection techniques. We chose to use bottom-up visual attention systems that encode attentional fixations in a topographic map, known as a saliency map. This map serves as basis for generating a mask to select salient points according to human interest, from the points extracted by a region selection technique. Furthermore, we addressed the problem of high dimensionality of descriptors in region appearance phase. We proposed a new hybrid descriptor representing the spatial frequency of some perceptual features, extracted by a visual attention system (color, texture, intensity. This descriptor consist of a concatenation of energy measures computed at the output of a filter bank, at each level of the multi-resolution pyramid of perceptual features. This descriptor has the advantage of being lower dimensional than traditional descriptors. 2015 Altres https://ddd.uab.cat/record/144986 urn:oai:ddd.uab.cat:144986 urn:10.5565/rev/elcvia.714 urn:oai:elcvia.revistes.uab.cat:article/714 urn:articleid:15775097v14n3p11 urn:oai:raco.cat:article/305468 urn:scopus_id:84958172813 eng ELCVIA ; Vol. 14, Num. 3 (2015), p. 11-12 open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades. https://creativecommons.org/licenses/by-nc-nd/3.0/ application/pdf