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414 results on '"Sankur, Bülent"'

1. Activity recognition from videos with parallel hypergraph matching on GPUs

Author

Lombardi, Eric, Wolf, Christian, Celiktutan, Oya, and Sankur, Bülent

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

In this paper, we propose a method for activity recognition from videos based on sparse local features and hypergraph matching. We benefit from special properties of the temporal domain in the data to derive a sequential and fast graph matching algorithm for GPUs. Traditionally, graphs and hypergraphs are frequently used to recognize complex and often non-rigid patterns in computer vision, either through graph matching or point-set matching with graphs. Most formulations resort to the minimization of a difficult discrete energy function mixing geometric or structural terms with data attached terms involving appearance features. Traditional methods solve this minimization problem approximately, for instance with spectral techniques. In this work, instead of solving the problem approximatively, the exact solution for the optimal assignment is calculated in parallel on GPUs. The graphical structure is simplified and regularized, which allows to derive an efficient recursive minimization algorithm. The algorithm distributes subproblems over the calculation units of a GPU, which solves them in parallel, allowing the system to run faster than real-time on medium-end GPUs.

Published
2015

6. Hand Recognition

Author

Dutağacı, Helin, primary, Fouquier, Geoffroy, additional, Yörük, Erdem, additional, Sankur, Bülent, additional, Likforman-Sulem, Laurence, additional, and Darbon, Jérôme, additional

Published
2009
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8. Bosphorus Database for 3D Face Analysis

Author

Savran, Arman, primary, Alyüz, Neşe, additional, Dibeklioğlu, Hamdi, additional, Çeliktutan, Oya, additional, Gökberk, Berk, additional, Sankur, Bülent, additional, and Akarun, Lale, additional

Published
2008
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27. Density-Based Shape Descriptors for 3D Object Retrieval

Author

Akgül, Ceyhun Burak, Sankur, Bülent, Schmitt, Francis, Yemez, Yücel, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Gunsel, Bilge, editor, Jain, Anil K., editor, Tekalp, A. Murat, editor, and Sankur, Bülent, editor

Published
2006
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30. Spatiotemporal Features for Effective Facial Expression Recognition

Author

Akakın, Hatice Çınar, Sankur, Bülent, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, and Kutulakos, Kiriakos N., editor

Published
2012
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31. Real-Time Exact Graph Matching with Application in Human Action Recognition

Author

Çeliktutan, Oya, Wolf, Christian, Sankur, Bülent, Lombardi, Eric, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Salah, Albert Ali, editor, Ruiz-del-Solar, Javier, editor, Meriçli, Çetin, editor, and Oudeyer, Pierre-Yves, editor

Published
2012
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32. Spatiotemporal-Boosted DCT Features for Head and Face Gesture Analysis

Author

Çınar Akakın, Hatice, Sankur, Bülent, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Salah, Albert Ali, editor, Gevers, Theo, editor, Sebe, Nicu, editor, and Vinciarelli, Alessandro, editor

Published
2010
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33. Improving Efficiency of Density-Based Shape Descriptors for 3D Object Retrieval

Author

Akgül, Ceyhun Burak, Sankur, Bülent, Yemez, Yücel, Schmitt, Francis, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Rangan, C. Pandu, editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Gagalowicz, André, editor, and Philips, Wilfried, editor

Published
2007
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