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A perspective geometry approach to user-perspective rendering in hand-held video see-through augmented reality
Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
2014 (English)In: VRST '14 Proceedings of the 20th ACM Symposium on Virtual Reality Software and Technology, SPRINGER-VERLAG BERLIN , 2014, p. 207-208Conference paper, Published paper (Refereed)
Abstract [en]

Video see-through Augmented Reality (V-AR) displays a video feed overlaid with information, co-registered with the displayed objects. In this paper we consider the type of V-AR that is based on a hand-held device with a fixed camera. In most of the VA-R applications the view displayed on the screen is completely determined by the orientation of the camera, i.e., the device-perspective rendering; the screen displays what the camera sees. The alternative method is to use the relative pose of the user's view and the camera, i.e., the user-perspective rendering. In this paper we present an approach to the user perspective V-AR using 3D projective geometry. The view is adjusted to the user's perspective and rendered on the screen, making it an augmented window. We created and tested a running prototype based on our method.

Place, publisher, year, edition, pages
SPRINGER-VERLAG BERLIN , 2014. p. 207-208
Keywords [en]
Augmented Reality; Video see-through; Dynamic frustum; User-perspective
National Category
Media Engineering
Identifiers
URN: urn:nbn:se:liu:diva-123167DOI: 10.1145/2671015.2671127ISI: 000364709300012ISBN: 978-1-4503-3253-8 (print)OAI: oai:DiVA.org:liu-123167DiVA, id: diva2:1052142
Conference
The ACM Symposium on Virtual Reality Software and Technology (VRST) 2014
Available from: 2015-12-07 Created: 2015-12-04 Last updated: 2018-05-23Bibliographically approved
In thesis
1. Perspective Correct Hand-held Augmented Reality for Improved Graphics and Interaction
Open this publication in new window or tab >>Perspective Correct Hand-held Augmented Reality for Improved Graphics and Interaction
2018 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

With Augmented Reality, also termed AR, a view of the real world is augmented by superimposing computer-generated graphics, thereby enriching or enhancing the perception of the reality. Today, lots of applications benefit from AR in different areas, such as education, medicine, navigation, construction, gaming, and multiple other areas, using primarily head-mounted AR displays and AR on hand-held smart devices. Tablets and phones are highly suitable for AR, as they are equipped with high resolution screens, good cameras and powerful processing units, while being readily available to both industry and home use. They are used with video see-through AR, were the live view of the world is captured by a camera in real time and subsequently presented together with the computer graphics on the display.

In this thesis I put forth our recent work on improving video see-through Augmented Reality graphics and interaction for hand-held devices by applying and utilizing user perspective. On the rendering side, we introduce a geometry-based user perspective rending method aiming to align the on screen content with the real view of the world visible around the screen. Furthermore, we introduce a device calibration system to compensate for misalignment between system parts. On the interaction side we introduce two wand-like direct 3D pose manipulation techniques based on this user perspective. We also modified a selection technique and introduced a new one suitable to be used with our introduced manipulation techniques. Finally, I present several formal user studies, evaluating the introduced techniques and comparing them with concurrent state-of-the-art alternatives.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2018. p. 69
Series
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1931
National Category
Media Engineering Human Computer Interaction Media and Communication Technology Interaction Technologies Computer Sciences
Identifiers
urn:nbn:se:liu:diva-148005 (URN)10.3384/diss.diva-148005 (DOI)9789176853177 (ISBN)
Public defence
2018-05-29, Norrköpings visualiseringscenter C, Kungsgatan 54, Norrköping, 13:15 (English)
Opponent
Supervisors
Funder
Swedish Foundation for Strategic Research
Available from: 2018-05-23 Created: 2018-05-23 Last updated: 2018-05-23Bibliographically approved

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Samini, AliLundin Palmerius, Karljohan

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