Search results for "Realitat virtual"
showing 10 items of 12 documents
Advanced teleoperation and control system for industrial robots based on augmented virtuality and haptic feedback
2021
[EN] There are some industrial tasks that are still mainly performed manually by human workers due to their complexity, which is the case of surface treatment operations (such as sanding, deburring, finishing, grinding, polishing, etc.) used to repair defects. This work develops an advanced teleoperation and control system for industrial robots in order to assist the human operator to perform the mentioned tasks. On the one hand, the controlled robotic system provides strength and accuracy, holding the tool, keeping the right tool orientation and guaranteeing a smooth approach to the workpiece. On the other hand, the advanced teleoperation provides security and comfort to the user when perf…
Teleoperation of industrial robot manipulators based on augmented reality
2020
[EN] This research develops a novel teleoperation for robot manipulators based on augmented reality. The proposed interface is equipped with full capabilities in order to replace the classical teach pendant of the robot for carrying out teleoperation tasks. The proposed interface is based on an augmented reality headset for projecting computer-generated graphics onto the real environment and a gamepad to interact with the computer-generated graphics and provide robot commands. In order to demonstrate the benefits of the proposed method, several usability tests were conducted using a 6R industrial robot manipulator in order to compare the proposed interface and the conventional teach pendant…
Emotional eating and food intake after sadness and joy
2013
Do people with a high score on a scale for eating in response to negative emotions also show high food intake in response to positive emotions?. We studied these effects in 60 female students that were preselected on the basis of extreme high or low scores on an emotional eating questionnaire. Using a between subject design we experimentally tested the difference in food intake following a mood induction designed to induce joy or sadness (the joy vs. sad mood condition). The high and low emotional eaters did not differ in their food intake, but emotional eating significantly moderated the relationship between mood condition and food intake. Whereas low emotional eaters ate similar amounts a…
A grid representation for distributed virtual environments
2004
Fast Internet connections and the widespread use of high performance graphic cards are making Distributed Virtual Environments (DVE) very common nowadays. The architecture and behavior of these systems are very similar to new grid computing applications where concepts such as sharing and high scalability are extremely exploited. However, there are several key issues in these systems that should still be improved in order to design a scalable and cost-effective DVE system. One of these key issues is the partitioning problem. This problem consists of efficiently assigning clients (3-D avatars) to the arbiters (servers) in the system. As an alternative to the ad-hoc heuristic proposed in the l…
New developments in simulation-based harbour crane training
2011
This paper presents the efforts that have been made during the development of a set of harbour training simulators to improve their quality. The paper focuses on two main research lines: the improvement of complex physical systems involved in the simulation and the analysis of hardware architecture solutions. Cable-based hoist systems and bulk materials are systems present in different harbour equipment and are usually simulated with poor quality due to their complexity. In this paper physics-based models for the interactive simulation of these systems are proposed and applied to real cases. Also, different hardware simulator architectures are analysed and different approaches are proposed …
La Sociedad de las turbas, la sociedad de la incomunicación
2023
En los últimos 20 años, a medida que se ha desarrollado la sociedad de la información, también ha sido tendencia olvidar a los referentes que ayudaron a comprender la mass communication society. Se ha producido un vaciamiento conceptual que debemos enmendar para problematizar los discursos del odio, la polarización y la fractura de la ex- periencia entre lo real y lo virtual. Para ello, en este ensayo partimos de una recopilación bibliográfica constructivis- ta que conecta las industrias culturales, como entidades productoras de consensos; los medios de comunicación, como instituciones de socialización colectiva; el proceso de virtualización digital, como ruptura con la experiencia no media…
When Augmented Reality Met Art: Lessons Learned from Researcher-Artist Interdisciplinary Work
2018
Over the last few years, Augmented Reality (AR) technology has quickly evolved and today there is commercial software and hardware that allow the creation of AR experiences. However, it might still be cumbersome to create rich AR experiences without a deep knowledge of the technology. Artists have collaborated with IT experts during the last few years in order to enhance artistic pieces embedding AR technology, leading to the emergence of interesting collaborations between artists and engineers, computer scientists, architects, etc. The resulting works can be referred as AR Art. However, the interdisciplinary work behind these collaborations is usually not addressed. The aim of this paper i…
Live LEGO House: a Mixed Reality Game for the Edutainment
2007
Gaming is a natural way of learning and multimedia technologies bring new possibilities in the field of edutainment. Live LEGO House in an interactive space to explore coexistence and multicultural factors through gaming based on the Mixed Reality(MXR)technology. The system consists basically on a physical/real house built with the LEGO blocks, which is enriched with different non-physical/virtual multimedia files, including sounds, videos and 3D animations with multicultural content. Children in teract with the house via two dolls, each of them having different characteristics and needs. They (children) will need to agree in some aspects in order to play the game properly, to coexist. Tact…
Virtual Prototyping of a Domestic Mobile Robot for Design and Navigation Optimisation
2004
This paper describes the application developed as part of the"PROSIGRAT" research project carried out by IKERLAN and Valencia University"s ARTEC group dealing with the use of Real Time simulation for services and products evaluation. The application consists of the development of a Real Time graphic simulation of a domestic mobile robot moving in a virtual environment and guided by a real physical navigation and control system, based on the HIL methodology concept. This is a clear example in which the Real Time simulation of a mechatronic system interacting with the environment leads to a reduction in the time-to-market of a new product that has been well tested and operates in a safe, reli…
Sound and Movement Visualization in the AR-Jazz Scenario
2009
Abstract. This paper describes AR-Jazz, an augmented reality application designed to visualize sound and movements in live jazz performances. The augmented scenario is achieved within the program Max MSP Jitter, with an integrated inertial sensor and a microphone. As a display, a cinema screen is used. The application was first shown at the SedaJazz Festival 2007 in Valencia (Spain). In first place, a workshop was made in order the musicians to become familiar with the application. Secondly, a live performance was shown. The experience is described in this paper.