Search results for "visualisation"
showing 10 items of 50 documents
Introducing a new method for efficient visualization of complex shape 3D ultrasonic phased-array C-scans
2017
Automated robotic inspection systems allow the collection of large data volumes, compared to existing inspection systems. To maximize the throughput associated with the non-destructive evaluation phase, it is crucial that the reconstructed inspection data sets are generated and examined rapidly without a loss of detail. Data analysis often becomes the bottleneck of automated inspections. Therefore, new data visualization tools, suitable to screen the NDT information obtained through robotic systems, are urgently required. This paper presents a new approach, for the generation of three-dimensional ultrasonic C-scans of large and complex parts, suitable for application to high data throughput…
Representation of thermal building simulation in virtual reality for sustainable building
2014
The importance of energy efficiency as well as integration of advances in sustainable buildingdesign and VR technology have lead this research to focus on thermal simulation results visualized in avirtual environment (VE). The emphasis is on the representation of thermal building simulation (TBS)results and on the perception of thermal data simulated in a VE. The current application of the designprocess through energy efficiency in VR systems is limited mostly to building performance predictionsand design review, as the issue of the data formats and the workflow used for 3D modeling, thermalcalculation and VR visualization.Different applications and tools involved to represent TBS in VE are…
pcaExplorer
2017
This package provides functionality for interactive visualization of RNA-seq datasets based on Principal Components Analysis. The methods provided allow for quick information extraction and effective data exploration. A Shiny application encapsulates the whole analysis.
Correction of B-scan distortion for optimum ultrasonic imaging of backwalls with complex geometries
2020
Ultrasound undergoes refraction and reflection at interfaces between media of different acoustic refractive indices. The most common ultrasonic method (pulse-echo) monitors the reflected energy to infer the presence of flaws, whereas the lower amplitude of refracted signals is ignored. When the reflector is orientated normally with respect to the ultrasonic beam, the received echo signal shows the maximum amplitude. The pulse-echo method also relies on monitoring the amplitude of the backwall echo to identify or confirm the presence of defects. This works well for parts with constant thickness and with planar backwalls. Unfortunately, parts with complex backwalls are common to many industri…
Lielapjoma datu vizualizācija
2015
Cilvēkam ir grūti aptvert cik daudz nestrukturēta informācija tiek ģenerēta vienā minūtē, kur nu vēl vienas dienas laikā. Vienas minūtes laikā tiek ģenerēti 250 petabaiti, kas ir apmēram 250 000 terabaitu. Darba mērķis ir sniegt ieskatu lielapjoma datu pasaulē, ko ar lielapjoma datiem ir iespējams paveikt un kā to mēģināt saprast. Darbā ir aprakstīta lielapjoma datu aktualitāte, uzturēšana, analītika un vizualizācija. Kā arī tiek pētīti dati par Paula Stradiņa klīniskās universitātes slimnīcas kardioloģijas nodaļas pacientiem pēdējo 10 gadu laikā. Pateicoties vizualizācijām, tiek konstatēts, ka mūsdienu stereotipiskā domāšana ne vienmēr ir pareiza. Vizualizācijas parāda galvenos sirds un as…
Visualisation et analyse spatio-temporelle de trajectoires maritimes
2016
Bedrock of globalization, maritime transport is paradoxically the poor sibling of network analysis and flow mapping. But the unprecedented use of archival data allows us to consider a long-term analysis
Approche adaptative de simplification géométrique temps réel de modèles 3D distribués pour la visualisation et l'interaction à distance
2010
National audience; Deux moyens permettent aujourd'hui d'accéder visuellement à des données 3D volumineuses à distance : le premier consiste à transférer les données entre le serveur et le poste client/utilisateur, le second consiste à générer et à transférer des " photographies" de ces données 3D qui restent alors localisées sur le serveur. Le goulot d'étranglement principal dans les deux cas est la bande passante du réseau qui ne permet pas de transférer des volumes de données importants. Bien plus, la visualisation de plusieurs centaines de giga-octets d'informations nécessite de grandes capacités de stockage (disque dur ou mémoire) et des équipements de visualisation très performants (ca…
A predictive approach for a real-time remote visualization of large meshes
2012
Déjà sur HAL; Remote access to large meshes is the subject of studies since several years. We propose in this paper a contribution to the problem of remote mesh viewing. We work on triangular meshes. After a study of existing methods of remote viewing, we propose a visualization approach based on a client-server architecture, in which almost all operations are performed on the server. Our approach includes three main steps: a first step of partitioning the original mesh, generating several fragments of the original mesh that can be supported by the supposed smaller Transfer Control Protocol (TCP) window size of the network, a second step called pre-simplification of the mesh partitioned, ge…
Modes de visualisation spécifiques de l'analyse de données lexicologiques
1984
International audience
Visualising knowledge from chat debates in argument diagrams
2010
This study investigates whether combining chat discussion and construction of an argument diagram stimulates students to formulate new ideas in practising argumentation. In this study, 16 secondary school students discussed vivisection and gender equality in pairs using both free and structured chat tools. In structured chat, the students selected and completed partial sentences provided by the computer. After the discussion, they jointly constructed either argument diagrams freely based on the previous discussions with an Internet tool or modified a diagram the computer had constructed automatically during the structured chat. The freely constructed diagrams contained more of the students'…