Title: | Modeling trajectories of free moving objects with smooth flow fields |
Authors: | Nykolaychuk, Mykhaylo Rössl, Christian Theisel, Holger Richter, Klaus |
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. 173-180. |
Issue Date: | 2010 |
Publisher: | Václav Skala - UNION Agency |
Document type: | konferenční příspěvek conferenceObject |
URI: | http://wscg.zcu.cz/WSCG2010/Papers_2010/!_2010_FULL-proceedings.pdf http://hdl.handle.net/11025/10859 |
ISBN: | 978-80-86943-88-6 |
Keywords: | analýza pohybu;typologie průtokového pole |
Keywords in different language: | motion analysis;flow field topology |
Abstract: | We present a new method for smooth global analysis and representation of image-based motion data with topological methods for flow fields, useful for further activity analysis. A video sensor captures motion of subjects and yields discrete samples of velocity vectors in the image domain. We show how to construct a smooth, continuous, globally defined bidirectional flow field which approximates the directional part of given samples. We then apply a topological analysis of this continuous flow field which yields a segmentation into regions of similar flow behavior, i.e., regions of similar motion. This segmentation (topology) can be seen as global model of typical motions and used for further analysis like detecting atypical motions. We tested our method empirically and provide results for two different scenarios with human motion and traffic motion, respectively. |
Rights: | © Václav Skala - UNION Agency |
Appears in Collections: | WSCG 2010: Full Papers Proceedings |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Nykolaychuk.pdf | Plný text | 2,69 MB | Adobe PDF | View/Open |
Please use this identifier to cite or link to this item:
http://hdl.handle.net/11025/10859
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