Discrimination task of driving is one of the most persistent problems in virtual reality. Indeed, animation avatar or moving driven by human motion objects are elements in this constantly changing field.
The objective of this study is to establish a topological signature to an independent given the topic selected motor task. To this end, we propose to use a topological method introduced by Edelsbrunner et al in 2002 called persistent homology. With this method we are able to characterize topologically a motor task.
interface for interacting with a virtual cockpit of a vehicle with tactile feedback and driving situation was developed.
The design of this interface incorporates the criteria for virtual reality allows a user to not induce cognitive overload resulting complexity of use and the invasive nature of the device, to be precise in the interaction with the elements cockpit, while providing a quality of tactile feedback to the user a good perception of the elements of the cockpit with respect to the real and to minimize the task execution errors and disturbances on the conductor as by reducing possible latency device.
This research mainly focused on the application of VR in the design of riveted joints in aeronautics. This design is multi-objective and depends on a lot of expert knowledge which is very hard to formalize. This research aimed at solving this problem by integrating VR as a user interface into this process.
This work was implemented in the tactile table and the CAVE system. The preliminary experiments showed this method is rather efficient and effective in the improvement of the performance compared with the stochastic optimization algorithm proposed in the doctoral thesis of Arnaud Collignan.
Shipbuilding is an ancient activity, it is always evolving. Today major step in this development is the modeling and numerical simulation. In this project, we sought to apply numerical modeling to restore old boats, after analyzing the working methods of traditional shipbuilding company based in La Ciotat.
This project aims to model two boats, one under construction and one under restoration, to understand the impact this will have on the modeling work of workers.
Navigation in a complex virtual environment gives subjects malaise called cybermalaise is due to several factors including the fact that the user is static while the world moves against him and movements rotation during navigation.
To resolve these conflicts, we have chosen to implement a metaphor based on the redirection of the subject as it moves in order to bring it in front of the front wall of the CAVE thus minimizing rotation of the virtual environment.
The emergence of new technologies and new video-based tools offer users the opportunity to interact with the computer via the movement of the body (hands, feet, face, ...). These new devices have created new expectations among users who demand the development of effective tools to exploit them. Some tools have been designed but cause problems overflow basis of the data dependencies ...
The aim of the work presented in this paper is to circumvent these problems by defining a metric that allows us to assess the similarity versus dissimilarity between poses. It is a way to introduce a notion of isomorphism poses.
Within the research project "simulator mosaic" initiated by the company director Mr. Serge Mosaic dynamic Wrobleski, the Arts et Métiers Paris Tech laboratory was charged with the mission to consider a solution to simulate the actual perception of a dynamic mosaic.
These mosaics have the particularity to react strongly to the relative positioning of the light and the user. Visibility or not will depend on the details of the position thereof.
In this report, a new solution of improving the driving experience of haptic interaction with virtual cars in CAVE virtual reality environment, particularly the interaction with a variety of additional functions on a car dashboard, is proposed.
The connection between the sensor surface and 3D image in a virtual driving simulator in real time is initially realized. Several directions of the next steps of the project and continuous improvement plans are taken into consideration and proposed.
Nowadays many jewelry manufacturing industries (e.g. GravoTech) use the subdivision surface to represent their digital mock-up during the computer aided design (CAD). Their CAD workflow to design a model usually necessitates three stages: 1) profile description via drawing curves, 2) rough boundary representation (B-Rep) through creating quadrilateral meshes and 3) detailed shape obtained by mesh subdivision surface. Since the designer has to create manually each quadrilateral therefore much time has been spent on the second stage.
In order to improve the workflow and enhance the product design efficiency, the current master thesis has proposed a computational approach to automatizing the second stage. This approach has been prototyped in the CAD system 3Design and it consists of four steps: 1) polylines creation from curves control polygons, 2) cycles identification from the polyline network, 3) meshing in each cycle, 4) mesh fairing. The prototyped operator has been experimented on industry and academy examples and the results are very satisfactory.
Part of the construction of buildings, the digital mock-type BIM is gaining. These models provide enhanced additional information from multiple models. For the restoration of heritage buildings, this kind of model is impractical and therefore not used.
We developed a methodology based on digital representation of the old building to make these models available to building professionals in the context of renovation projects. Our approach is to show the advantage of a mobile application containing the digital model and offering many features tailored to professionals in relation to methods of managing current site.
This application is developed with Unity and focused on iOS and Android.
Dynamic driving simulators still unrealistic and often produce simulator sickness. This simulator sickness is caused in part by the visual-vestibular conflict, but also by the lack of realism of simulations. The simulator does not allow to reproduce the vibration produced by the roughness of the road. The contact between the road and the car results in vibration that the driver feels through the legs, seat and hands.
Then ask these questions:
Experiments on the SAAM accompanied by measures of postural stability and questionnaires show that vibrations enhance the realism of the simulations can reproduce situations previously impossible with conventional dynamic driving simulators. The fact enhance the realistic rendering of the simulation also reduces somewhat the simulator sickness.
Nowadays, driving simulation becomes an essential tool for developing safer and more comfortable vehicles. The research aim for the development of future tools for OpenSD2S, Open Source software dedicated to driving simulation.
For this, a new tool has been developed for the generation of routes and creating traffic scenarios. Built-in OpenSD2S software tool complements the functions required and ensures a bright future for traffic this platform module.