Search results for "visuel"
showing 10 items of 62 documents
Localisation visuelle basée sur la reconnaissance du lieu dans les environnements changeants
2017
In many applications, it is crucial that a robot or vehicle localizes itself within the world especially for autonomous navigation and driving. The goal of this thesis is to improve place recognition performance for visual localization in changing environment. The approach is as follows: in off-line phase, geo-referenced images of each location are acquired, features are extracted and saved. While in the on-line phase, the vehicle localizes itself by identifying a previously-visited location through image or sequence retrieving. However, visual localization is challenging due to drastic appearance and illumination changes caused by weather conditions or seasonal changing. This thesis addres…
« La Peinture de paysage selon Asher B. Durand »
2014
International audience
A major shift in Late Bronze Age metalwork production around 900 BC
2023
Our traditional chronology systems hardly ever reflect cultural changes accurately and may even mask real moments of discontinuity. This is particularly true for the second part of the Late Bronze Age Urnfield Period where a radical change in iconography can actually be noticed around 900 BC. Within a very short period, the famous solar bird-boat iconography, which had widely developed over centuries and given rise to the elaborate and sophisticated ornamentation known on solid hilted swords from the 11th/10th century, takes a back seat and we can see a single new symbol coming to the fore, concentrating figurative representation in form of a singular vase-shaped build (Wirth S. 2021, 652-6…
Drawing and the non-verbal mind: A Life-Span Perspective
2008
1. Contemporary enquiries into a long-standing domain: drawing research Chris Lange-Kuttner and Annie Vinter Part I. Self, Symbols and Intention: 2. Understanding reflections of self and other objects Kim Bard 3. Drawing production, drawing re-experience and drawing re-cognition Josephine Ross 4. Style and other factors affecting children's recognition of their own drawings Robin N. Campbell, Pauline A. Duncan, Anita L. Harrison and Lynne C. Mathewson 5. Children's understanding of the dual nature of pictures Richard Jolley 6. Pictorial intention, action and interpretation Norman H. Freeman and Esther Adi-Japha Part II. Syntax, Space Systems and Projection: 7. The interaction of biomechanic…
Spatio-temporal saliency detection in dynamic scenes using color and texture features
2014
Visual saliency is an important research topic in the field of computer vision due to its numerouspossible applications. It helps to focus on regions of interest instead of processingthe whole image or video data. Detecting visual saliency in still images has been widelyaddressed in literature with several formulations. However, visual saliency detection invideos has attracted little attention, and is a more challenging task due to additional temporalinformation. Indeed, a video contains strong spatio-temporal correlation betweenthe regions of consecutive frames, and, furthermore, motion of foreground objects dramaticallychanges the importance of the objects in a scene. The main objective o…
Forme versus texture de stimuli tactiles élémentaires : quelle dimension est privilégiée par l’enfant aveugle ou voyant ?
2019
International audience
Semantic Analysis of the Driving Environment in Urban Scenarios
2021
Understanding urban scenes require recognizing the semantic constituents of a scene and the complex interactions between them. In this work, we explore and provide effective representations for understanding urban scenes based on in situ perception, which can be helpful for planning and decision-making in various complex urban environments and under a variety of environmental conditions. We first present a taxonomy of deep learning methods in the area of semantic segmentation, the most studied topic in the literature for understanding urban driving scenes. The methods are categorized based on their architectural structure and further elaborated with a discussion of their advantages, possibl…
Vers une aide à la mobilité basée sur la connaissance de l'espace pour les personnes ayant une déficience visuelle
2018
International audience; Cette communication présente un nouveau concept de dispositif d'assistance à la mobilité pour les personnes présentant une incapacité visuelle (PPIV), son implantation dans un simulateur, et son évaluation préliminaire. Ce système, ACCESSPACE, permet de représenter l'essentiel (gist) de l'agencement spatial des alentours immédiats de l'utilisateur, sur une tablette à stimulation tactile. En combinant des données cartographiques, GPS et visuelles, ce système effectue un bi-partitionnement de l'espace (en zones accessibles ou non) et transmet cette information sous forme d'une carte égocentrée augmentée, évoluant en temps réel avec les mouvements de l'utilisateur. L'év…
Understanding of tactile pictures in visual impaired children
2015
The present PhD aims at understanding how Visual Impaired (VI) children process the tactile pictures that illustrate the tactile books specially designed for them. Our work is organized around two main axes of analysis. The first axis concentrates on the child who explores the tactile images, while the second axis focuses on the impact that the properties of these images can have on children’s haptic processing. Our researches included children presenting various degrees of visual impairment but without any associated disorders (in particular, without any cognitive delay), distinguishing early blind children from children with low vision. We also compared their performance with those of sig…
Drôle(s) de nation(s) : les constructions identitaires à l’épreuve de l’humour dans la fiction audiovisuelle espagnole au début du XXIe siècle
2020
International audience; La crise catalane actuelle, après des décennies de terrorisme basque, témoigne des fragilités d’un état soumis aux forces centrifuges des nationalismes périphériques. Le pacte constitutionnel de 1978, fondé sur l’équilibre délicat entre « l’unité indissoluble de la nation espagnole » et « le droit à l’autonomie des nationalités et régions qui la composent » montre aujourd’hui des signes évidents d’essoufflement, alors que le pays se relève difficilement d’une grave crise économique. Au même moment, le cinéma – Ocho apellidos vascos (Emilio Martínez-Lázaro, 2014), Ocho apellidos catalanes (Emilio Martínez-Lázaro, 2015), Cuerpo de élite (Joaquín Mazón, 2016), Fe de eta…