Activity Representation Using 3D Shape Models
We present a method for characterizing human activities using 3D deformable shape models. The motion trajectories of points extracted from objects involved in the activity are used to build models for each activity, and these models are used for classification and detection of unusual activities. Th...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2008-04-01
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| Series: | EURASIP Journal on Image and Video Processing |
| Online Access: | http://dx.doi.org/10.1155/2008/347050 |
| _version_ | 1818298104898650112 |
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| author | Umut Akdemir Rama Chellappa Amit K. Roy-Chowdhury Mohamed F. Abdelkader |
| author_facet | Umut Akdemir Rama Chellappa Amit K. Roy-Chowdhury Mohamed F. Abdelkader |
| author_sort | Umut Akdemir |
| collection | DOAJ |
| description | We present a method for characterizing human activities using 3D deformable shape models. The motion trajectories of points extracted from objects involved in the activity are used to build models for each activity, and these models are used for classification and detection of unusual activities. The deformable models are learnt using the factorization theorem for nonrigid 3D models. We present a theory for characterizing the degree of deformation in the 3D models from a sequence of tracked observations. This degree, termed as deformation index (DI), is used as an input to the 3D model estimation process. We study the special case of ground plane activities in detail because of its importance in video surveillance applications. We present results of our activity modeling approach using videos of both high-resolution single individual activities and ground plane surveillance activities. |
| first_indexed | 2024-12-13T04:30:02Z |
| format | Article |
| id | doaj.art-ec54f05372a24450872a32928e8a2b30 |
| institution | Directory Open Access Journal |
| issn | 1687-5176 1687-5281 |
| language | English |
| last_indexed | 2024-12-13T04:30:02Z |
| publishDate | 2008-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Image and Video Processing |
| spelling | doaj.art-ec54f05372a24450872a32928e8a2b302022-12-21T23:59:35ZengSpringerOpenEURASIP Journal on Image and Video Processing1687-51761687-52812008-04-01200810.1155/2008/347050Activity Representation Using 3D Shape ModelsUmut AkdemirRama ChellappaAmit K. Roy-ChowdhuryMohamed F. AbdelkaderWe present a method for characterizing human activities using 3D deformable shape models. The motion trajectories of points extracted from objects involved in the activity are used to build models for each activity, and these models are used for classification and detection of unusual activities. The deformable models are learnt using the factorization theorem for nonrigid 3D models. We present a theory for characterizing the degree of deformation in the 3D models from a sequence of tracked observations. This degree, termed as deformation index (DI), is used as an input to the 3D model estimation process. We study the special case of ground plane activities in detail because of its importance in video surveillance applications. We present results of our activity modeling approach using videos of both high-resolution single individual activities and ground plane surveillance activities.http://dx.doi.org/10.1155/2008/347050 |
| spellingShingle | Umut Akdemir Rama Chellappa Amit K. Roy-Chowdhury Mohamed F. Abdelkader Activity Representation Using 3D Shape Models EURASIP Journal on Image and Video Processing |
| title | Activity Representation Using 3D Shape Models |
| title_full | Activity Representation Using 3D Shape Models |
| title_fullStr | Activity Representation Using 3D Shape Models |
| title_full_unstemmed | Activity Representation Using 3D Shape Models |
| title_short | Activity Representation Using 3D Shape Models |
| title_sort | activity representation using 3d shape models |
| url | http://dx.doi.org/10.1155/2008/347050 |
| work_keys_str_mv | AT umutakdemir activityrepresentationusing3dshapemodels AT ramachellappa activityrepresentationusing3dshapemodels AT amitkroychowdhury activityrepresentationusing3dshapemodels AT mohamedfabdelkader activityrepresentationusing3dshapemodels |