Search results for "scene"
showing 10 items of 95 documents
Two View Line-Based Motion and Structure Estimation for Planar Scenes
2012
We present an algorithm for reconstruction of piece-wise planar scenes from only two views and based on minimum line correspondences. We first recover camera rotation by matching vanishing points based on the methods already exist in the literature and then recover the camera translation by searching among a family of hypothesized planes passing through one line. Unlike algorithms based on line segments, the presented algorithm does not require an overlap between two line segments or more that one line correspon- dence across more than two views to recover the translation and achieves the goal by exploiting photometric constraints of the surface around the line. Experimental results on real…
Scenekunstens (for)handlingsrom etter 22. juli
2019
In this article I discuss theatre’s scope of action after the 2011 terror attacks in Norway (“22. July”), with an emphasis on independent theatre, aesthetic heteronomy and the public sphere. A theatre manager’s (Jon Refsdal Moe) retrospect account of and reflections upon a case of self-censoring is the starting point for my (re-)examination of the arguments and dynamics concerning some of the most prominent contentious 22. July performances. I discuss how the controversies can be understood and dealt with, and how they are connected to theatre’s scope of action and place in society today. In my argument, I differentiate between the public sphere as an arena for discussion and debate (which …
L’innovazione tecnologica e il Faculty Development.
2023
La crisi pandemica ha accelerato la diffusione di ambienti di apprendimento caratterizzati dall'uso intensivo della tecnologia. Questa novità rappresenta un obiettivo trasversale della professionalizzazione del docente universitario, con una particolare declinazione sul versante pedagogico-didattico-valutativo quale questione strategica per lo sviluppo dell’alta formazione. Il contributo illustra i risultati di una ricerca condotta con 119 docenti universitari neoassunti e 20 Direttori di dipartimento. La finalità della ricerca è stata, da una parte, rilevare la percezione dei docenti neoassunti relativa alle proprie competenze didattiche, metacognitive e valutative, con riferimento alla di…
More about the developing of invisible lipstick-contaminated lipmarks on human skin: The usefulness of fluorescent dyes
2006
At the present time fingerprints are one of the simplest, and most reliable means of identification. Increasingly, crime scene investigators look for palm, foot, ear or lip prints. With regard to lip prints, the use, very common today, of protective or permanent lipsticks allow the production an invisible lipmark (or invisible lipstick-contaminated lipmark) which is possible to develop. Some results have already been published about developers useful for different kinds of surfaces (both porous and non-porous) as well as those which are more efficient in case of old or recent prints. The latest studies are about the developing on human skin, and they prove the usefulness of lysochromes (spe…
Analysis of Low-Altitude Aerial Sequences for Road Traffic Diagnosis using Graph Partitioning and Markov Hierarchical Models
2016
International audience; This article focuses on an original approach aiming the processing of low-altitude aerial sequences taken from an helicopter (or drone) and presenting a road traffic. Proposed system attempts to extract vehicles from acquired sequences. Our approach begins with detecting the primitives of sequence images. At the time of this step of segmentation, the system computes dominant motion for each pair of images. This motion is computed using wavelets analysis on optical flow equation and robust techniques. Interesting areas (areas not affected by the dominant motion) are detected thanks to a Markov hierarchical model. Primitives stemming from segmentation and interesting a…
Automatic Timeline Construction and Analysis For Computer Forensics Purposes
2014
International audience; To determine the circumstances of an incident, investigators need to reconstruct events that occurred in the past. The large amount of data spread across the crime scene makes this task very tedious and complex. In particular, the analysis of the reconstructed timeline, due to the huge quantity of events that occurred on a digital system, is almost impossible and leads to cognitive overload. Therefore, it becomes more and more necessary to develop automatic tools to help or even replace investigators in some parts of the investigation. This paper introduces a multi-layered architecture designed to assist the investigative team in the extraction of information left in…
Mise en correspondance de lignes à partir de deux vues, estimation du mouvement et reconstruction pour les systèmes centraux
2011
The primary goal of this thesis is to develop generic motion and structure algorithms for images taken from constructed scenes by various types of central imaging systems including perspective, fish-eye and catadioptric systems. As-suming that the mapping between the image pixels and their 3D rays in space is known, instead of image planes, we work on image spheres (projection of the images on a unit sphere) which enable us to present points over the entire viewsphere suitable for presenting omnidirectional images. In the first part of this thesis, we develop a generic and simple line matching approach for images taken from constructed scenes under a short baseline motion as well as a fast …
3D ACQUISITION SYSTEM APPLIED TO AGRONOMIC SCENES
2012
International audience; To improve results in automatic wheat ear counting by proxy-detection for early yield prediction, we need depth information of the scene. In this paper, we describe our 3D acquisition system dedicated to reconstruction of agronomic scenes. This system is composed of a camera mounted on a linear displacement driven by a microcontroller. The linear displacement allows acquiring a set of images in different distances to the scene. This image stack is used to apply shape from focus technique which is a passive and monocular 3D reconstruction method. This technique consists in the application of a focus measure for every pixel in the stack. An approximation method is used…
Mezenhimālo cilmes šūnu diferenciācijas noteikšana ar beziezīmes metodēm
2019
Maģistra darba mērķis bija veikt ādas mezenhimālo cilmes šūnu (MCŠ) diferenciāciju un noteikt ar to saistītās morfoloģiskās izmaiņas izmantojot attēlveidojošo plūsmas citometriju. Izmantojām šo metodi, lai raksturotu un atšķirtu šūnas bez iezīmēm, kas kultivētas dažādos apstākļos (audzētas sferoīdos, diferencētas par adipocītiem, kultivētas doksorubicīna klātbūtnē). Morfoloģiskie dati tika analizēti, izmantojot programmatūru “IDEAS”. Rezultāti parādīja, ka adipodiferencētās šūnas var atšķirties ne tikai pēc lieluma, bet arī pēc spilgtā lauka signāla intensitātes un tekstūras parametriem. 2D un 3D MCŠ ir atdalāmas ar dažādiem tumšā lauka kanāla parametriem. Senescentās šūnas var atšķirt no k…
Tres artistas en el exilio: Max Aub, Félix Candela y Josep Renau
2020
Three artists in exile focuses on the historical diaspora provoked by the Spanish civil war (1936- 1939), and how it influenced three prominent figures of the cultural scene of that period: the writer and typographer Max Aub Mohrenwitz (Paris, 1903-Ciudad de Mexico, 1972); the architect Félix Candela Outeriño (Madrid, 1910-Raleigh, US, 1977); and the artist Josep Renau Berenguer (Valencia, 1907-Berlín, 1982). They are the three protagonists of this article, who were simultaneously living in Mexico during the exile and who made notable contributions in the fields of arts and humanities (Max Aub), architecture (Félix Candela), and graphic design and photomontage (Josep Renau). While they were…