Drag'n Go: Simple and Fast Navigation in Virtual Environment

4 pages.International audienceIn this paper we introduce the Drag'n Go technique to navigate in multi-scale virtual 3d environment. This new technique takes its root from the point of interest (POI) approach where the user selects a target to reach. The biggest difference between the two is that with Drag'n Go the user keeps full control of its position relative to the target as well as its traveling speed. The technique requires only a 2d input and consequently, can be used with a large amount of devices like mouse, touch or pen screen. We conducted preliminary experiment that highlights that Drag'n Go is an efficient and appreciated method for touch-based device and a competitive approach for mouse-based device

Generalized Trackball and 3D Touch Interaction

This thesis faces the problem of 3D interaction by means of touch and mouse input. We propose a multitouch enabled adaptation of the classical mouse based trackball interaction scheme. In addition we introduce a new interaction metaphor based on visiting the space around a virtual object remaining at a given distance. This approach allows an intuitive navigation of topologically complex shapes enabling unexperienced users to visit hard to be reached parts

Drag'n Go: Simple and Fast Navigation in Virtual Environment

4 pages.International audienceIn this paper we introduce the Drag'n Go technique to navigate in multi-scale virtual 3d environment. This new technique takes its root from the point of interest (POI) approach where the user selects a target to reach. The biggest difference between the two is that with Drag'n Go the user keeps full control of its position relative to the target as well as its traveling speed. The technique requires only a 2d input and consequently, can be used with a large amount of devices like mouse, touch or pen screen. We conducted preliminary experiment that highlights that Drag'n Go is an efficient and appreciated method for touch-based device and a competitive approach for mouse-based device

Viewpoint manipulations for 3D visualizations of smart buildings

Abstract. This thesis covers the design and implementation of a new single-input viewpoint manipulation technique aimed for a specific use case. The design of the technique is made based on previous literature. The objective of the research is to assess whether a single-input viewpoint manipulation technique can be as efficient as a multi-input viewpoint manipulation technique when used for observing a three dimensional (3D) model of a smart building. After checking the existing literature about basics of viewpoint manipulation, it was decided to design a single-input viewpoint manipulation technique that can be used on a wide range of hardware including touch screen devices not capable of multi-touch input and personal computers with a regular mouse. A 3D visualization of a nursing home was implemented to be viewed with the new technique. The nursing home in question is a smart house with sensors deployed in it, and sensor data is visualized in the 3D model. Aside from the new single-touch technique, a commonly used multi-touch technique was also implemented in order to compare the single-touch technique against it. Participants were recruited and user tests were made to find issues with the system. The yielded results indicate some clear points in the new technique that can be improved for future research.Tiivistelmä. Tämä työ kuvaa suunnittelu- ja implementaatioprosessin kuvakulmien manipulointiin tarkoitetulle uudenlaiselle yhden sormen (single-touch) syöttöjärjestelmälle. Suunnittelu pohjautuu aiempaan tutkimukseen. Tutkimuksen tarkoituksena on arvioida, onko yhden sormen järjestelmä yhtä tehokas monen sormen (multi-touch) järjestelmään verrattuna, kun kohteena on kolmiulotteinen (3D) malli älykkäästä rakennuksesta. Aiempiin tutkimuksiin nojaten yhden sormen järjestelmään päädyttiin, koska se tukisi suurempaa laitekantaa monen sormen järjestelmiin verrattuna. Työssä kehitettiin hoitokotia esittävä älyrakennuksen 3D-malli, jota käytettiin järjestelmän tarkastelemiseen. Kyseinen hoitokoti on anturointia sisältävä älykäs rakennus; 3D-mallia käytettiin anturidatan visualisoimiseen. Koejärjestelyissä käytettiin tavanomaista monen sormen järjestelmää vertailukohtana kehitettyyn järjestelmään. Vertailu tehtiin koehenkilöiden ja käyttäjätestien avulla. Tuloksista paljastui ominaisuuksia, joita tulisi parantaa järjestelmän tulevissa versioissa

A Survey of Interaction Techniques for Interactive 3D Environments

International audienceVarious interaction techniques have been developed for interactive 3D environments. This paper presents an up-to-date and comprehensive review of the state of the art of non-immersive interaction techniques for Navigation, Selection & Manipulation, and System Control, including a basic introduction to the topic, the challenges, and an examination of a number of popular approaches. We hope that this survey can aid both researchers and developers of interactive 3D applications in having a clearer overview of the topic and in particular can be useful for practitioners and researchers that are new to the field of interactive 3D graphics

Analysis of Visualisation and Interaction Tools Authors

This document provides an in-depth analysis of visualization and interaction tools employed in the context of Virtual Museum. This analysis is required to identify and design the tools and the different components that will be part of the Common Implementation Framework (CIF). The CIF will be the base of the web-based services and tools to support the development of Virtual Museums with particular attention to online Virtual Museum.The main goal is to provide to the stakeholders and developers an useful platform to support and help them in the development of their projects, despite the nature of the project itself. The design of the Common Implementation Framework (CIF) is based on an analysis of the typical workflow ofthe V-MUST partners and their perceived limitations of current technologies. This document is based also on the results of the V-MUST technical questionnaire (presented in the Deliverable 4.1). Based on these two source of information, we have selected some important tools (mainly visualization tools) and services and we elaborate some first guidelines and ideas for the design and development of the CIF, that shall provide a technological foundation for the V-MUST Platform, together with the V-MUST repository/repositories and the additional services defined in the WP4. Two state of the art reports, one about user interface design and another one about visualization technologies have been also provided in this document

Dual-finger 3D interaction techniques for mobile devices

Ankara : The Department of Computer Engineering and the Graduate School of Engineering and Science of Bilkent University, 2012.Thesis (Master's) -- Bilkent University, 2012.Includes bibliographical references leaves 61-67.Three-dimensional capabilities on mobile devices are increasing, and interactivity is becoming a key feature of these tools. It is expected that users will actively engage with the 3D content, instead of being passive consumers. Because touchscreens provide a direct means of interaction with 3D content by directly touching and manipulating 3D graphical elements, touch-based interaction is a natural and appealing style of input for 3D applications. However, developing 3D interaction techniques for handheld devices using touch-screens is not a straightforward task. One issue is that when interacting with 3D objects, users occlude the object with their fingers. Furthermore, because the user’s finger covers a large area of the screen, the smallest size of the object users can touch is limited. In this thesis, we first inspect existing 3D interaction techniques based on their performance with handheld devices. Then, we present a set of precise Dual-Finger 3D Interaction Techniques for a small display. Then, we present the results of an experimental study, where we evaluate the usability, performance, and error rate of the proposed and existing 3D interaction techniques. Finally, we integrate the proposed methods of different user modes.Telkenaroğlu, CanM.S

First-person locomotion in 3D virtual environments: a usability analysis

3D Virtual Environments (VE) are becoming popular as a tool for cognitive, functional and psychological assessment. Navigation in these environments is recognized as one of the most difficult activities in 3D Virtual Environments (VE). Users unfamiliar to 3D games, specially elder persons, get puzzled when they try to virtually move an avatar through these environments. Their inability to navigate prevents them from concentrating in the task and even to finish it. In this paper, we analyze the influence of different factors in locomotion control. We investigate the impact of having the cursor fixed at the camera center or leaving it free inside the current view. We also analyze the influence of the pitch angle on the camera control. In addition, we have designed an automatic locomotion system that we compare to user-controlled locomotion. We describe a virtual scenario and a test task that we have implemented to evaluate these different methods with users of diverse profiles.Postprint (published version