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Using a Mobile Phone for 6DOF Mesh Editing
Linköping University, Department of Science and Technology, Visual Information Technology and Applications (VITA). Linköping University, The Institute of Technology.
University of Canterbury, Christchurch, New Zealand.
2007 (English)In: Proceedings of the 7th ACM SIGCHI New Zealand Chapter's international Conference on Computer-Human interaction: Design Centered HCI., 2007, 9-16 p.Chapter in book (Other academic)
Abstract [en]

This paper describes how a mobile phone can be used as a six degree of freedom interaction device for 3D mesh editing. Using a video see-through Augmented Reality approach, the mobile phone meets several design guidelines for a natural, easy to learn, 3D human computer interaction device. We have developed a system that allows a user to select one or more vertices in an arbitrary sized polygon mesh and freely translate and rotate them by translating and rotating the device itself. The mesh is registered in 3D and viewed through the device and hence the system provides a unified perception-action space. We present the implementation details and discuss the possible advantages and disadvantages of this approach.

Place, publisher, year, edition, pages
2007. 9-16 p.
Keyword [en]
3D interfaces, content creation, mobile computer graphics, mobile phone augmented reality
National Category
Computer Vision and Robotics (Autonomous Systems)
URN: urn:nbn:se:liu:diva-12747DOI: 10.1145/1278960.1278962ISBN: 1-59593-473-1OAI: diva2:16963
Available from: 2007-11-20 Created: 2007-11-20 Last updated: 2013-07-11Bibliographically approved
In thesis
1. Bringing Augmented Reality to Mobile Phones
Open this publication in new window or tab >>Bringing Augmented Reality to Mobile Phones
2007 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

With its mixing of real and virtual, Augmented Reality (AR) is a technology that has attracted lots of attention from the science community and is seen as a perfect way to visualize context-related information. Computer generated graphics is presented to the user overlaid and registered with the real world and hence augmenting it. Promising intelligence amplification and higher productivity, AR has been intensively researched over several decades but has yet to reach a broad audience.

This thesis presents efforts in bringing Augmented Reality to mobile phones and thus to the general public. Implementing technologies on limited devices, such as mobile phones, poses a number of challenges that differ from traditional research directions. These include: limited computational resources with little or no possibility to upgrade or add hardware, limited input and output capabilities for interactive 3D graphics. The research presented in this thesis addresses these challenges and makes contributions in the following areas:

Mobile Phone Computer Vision-Based Tracking

The first contribution of thesis has been to migrate computer vision algorithms for tracking the mobile phone camera in a real world reference frame - a key enabling technology for AR. To tackle performance issues, low-level optimized code, using fixed-point algorithms, has been developed.

Mobile Phone 3D Interaction Techniques

Another contribution of this thesis has been to research interaction techniques for manipulating virtual content. This is in part realized by exploiting camera tracking for position-controlled interaction where motion of the device is used as input. Gesture input, made possible by a separate front camera, is another approach that is investigated. The obtained results are not unique to AR and could also be applicable to general mobile 3D graphics.

Novel Single User AR Applications

With short range communication technologies, mobile phones can exchange data not only with other phones but also with an intelligent environment. Data can be obtained for tracking or visualization; displays can be used to render graphics with the tracked mobile phone acting as an interaction device. Work is presented where a mobile phone harvests a sensor-network to use AR to visualize live data in context.

Novel Collaboration AR Applications

One of the most promising areas for mobile phone based AR is enhancing face-to-face computer supported cooperative work. This is because the AR display permits non-verbal cues to be used to a larger extent. In this thesis, face-to-face collaboration has been researched to examine whether AR increases awareness of collaboration partners even on small devices such as mobile phones. User feedback indicates that this is the case, confirming the hypothesis that mobile phones are increasingly able to deliver an AR experience to a large audience.

Place, publisher, year, edition, pages
New York, USA: ACM, 2007
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1145
Mobile Phone, Augmented Reality, HCI, Ubiquitous Computing, 3D Interaction, Computer Vision
National Category
Computer Vision and Robotics (Autonomous Systems)
urn:nbn:se:liu:diva-10204 (URN)978-91-85895-43-4 (ISBN)
Public defence
2007-12-14, K2, Kåkenhus, Campus Norrköping, Linköpings universitet, Norrköping, 13:15 (English)
On the day of the defence date the status on articles III and VIII was: Accepted.Available from: 2007-11-20 Created: 2007-11-20 Last updated: 2015-09-22

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