Title: Enhanced Visual Depth Cues for Collocated Visuo-Haptic Augmented Reality
Authors: Knörlein, B.
Székely, G.
Harders, M.
Citation: WSCG 2010: Full Papers Proceedings: 18th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision in co-operation with EUROGRAPHICS, p. 197-204.
Issue Date: 2010
Publisher: Václav Skala - UNION Agency
Document type: konferenční příspěvek
URI: http://wscg.zcu.cz/WSCG2010/Papers_2010/!_2010_FULL-proceedings.pdf
ISBN: 978-80-86943-88-6
Keywords: rozšířená realita;manipulace s okluzí;odlévání stínu
Keywords in different language: augmented reality;occlusion handling;shadow casting
Abstract: Our current research focuses on the application of visuo-haptic augmented reality in medical training. The setup developed in this context enables collocated haptic interaction with scene objects. In order to allow natural manipulations, provision of appropriate depth cues becomes a crucial factor. Therefore, we have included fast occlusion handling and shadow synthesis in our augmented environment. The occlusion map is initialized using a plane sweep approach, followed by an edge-based optimization via a Mumford-Shah functional. For obtaining the depth map three head mounted cameras are used and a leftright consistency check is performed to provide robustness against half occlusions. Shadowing is implemented via shadow mapping, considering both real and virtual objects. All steps have been implemented on GPU shaders and are performed in real-time.
Rights: © Václav Skala - UNION Agency
Appears in Collections:WSCG 2010: Full Papers Proceedings

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Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/10862

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