Using Time-of-Flight Range Data for Occlusion Handling in Augmented Reality

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dc.contributor.authorFischer, Janen_US
dc.contributor.authorHuhle, Benjaminen_US
dc.contributor.authorSchilling, Andreasen_US
dc.contributor.editorBernd Froehlich and Roland Blach and Robert van Liereen_US
dc.date.accessioned2014-01-27T10:56:05Z
dc.date.available2014-01-27T10:56:05Z
dc.date.issued2007en_US
dc.description.abstractOne of the main problems of monoscopic video see-through augmented reality (AR) is the lack of reliable depth information. This makes it difficult to correctly represent complex spatial interactions between real and virtual objects, e.g., when rendering shadows. The most obvious graphical artifact is the incorrect display of the occlusion of virtual models by real objects. Since the graphical models are rendered opaquely over the camera image, they always appear to occlude all objects in the real environment, regardless of the actual spatial relationship. In this paper, we propose to utilize a new type of hardware in order to solve some of the basic challenges of AR rendering. We introduce a depth-of-flight range sensor into AR, which produces a 2D map of the distances to real objects in the environment. The distance map is registered with high resolution color images delivered by a digital video camera. When displaying the virtual models in AR, the distance map is used in order to decide whether the camera image or the virtual object is visible at any position. This way, the occlusion of virtual models by real objects can be correctly represented. Preliminary results obtained with our approach show that a useful occlusion handling based on time-of-flight range data is possible.en_US
dc.description.seriesinformationEurographics Symposium on Virtual Environmentsen_US
dc.identifier.isbn978-3-905674-02-6en_US
dc.identifier.issn1727-530Xen_US
dc.identifier.urihttps://doi.org/10.2312/EGVE/IPT_EGVE2007/109-116en_US
dc.publisherThe Eurographics Associationen_US
dc.subjectCategories and Subject Descriptors (according to ACM CCS): H.5.1 [Information Interfaces and Presentation]: Artificial, augmented, and virtual realities I.3.3 [Computer Graphics]: Display algorithmsen_US
dc.titleUsing Time-of-Flight Range Data for Occlusion Handling in Augmented Realityen_US
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IPT/EGVE 2007: 11th International Workshop on Immersive Projection Technology, 13th Eurographics Workshop on Virtual Enviroments