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Spatio-Temporal Triangular-Chain CRF for Activity Recognition

Congqi Cao, Yifan Zhang, Hanqing Lu
2015 Proceedings of the 23rd ACM international conference on Multimedia - MM '15  
This paper addresses the problem of complex activity recognition with a unified hierarchical model. We expand triangularchain CRFs (TriCRFs) to the spatial dimension.  ...  Understanding such complex activities requires recognizing not only each individual action, but more importantly, capturing their spatio-temporal relationships.  ...  ACKNOWLEDGEMENTS We thank the anonymous reviews for their valuable comments.  ... 
doi:10.1145/2733373.2806304 dblp:conf/mm/CaoZL15 fatcat:47oporwe5fc47ousn5ispxjzba

Automatic Analysis of Facial Actions: A Survey

Brais Martinez, Michel F. Valstar, Bihan Jiang, Maja Pantic
2017 IEEE Transactions on Affective Computing  
, AU temporal segment detection, AU intensity estimation 1949-3045 (c)  ...  Such an automated process can also potentially increase the reliability, precision and temporal resolution of coding.  ...  CRF is an undirected graph, and the associated potentials are discriminatively trained. A chain CRF is its simplest topology. Each label node indicates the perframe output label.  ... 
doi:10.1109/taffc.2017.2731763 fatcat:6qp6zg5rrrgwrladsnwmyeqbq4

Skeleton-based Hand-Gesture Recognition with Lightweight Graph Convolutional Networks [article]

Hichem Sahbi
2021 arXiv   pre-print
Experiments conducted on the challenging task of skeleton-based hand-gesture recognition show the high effectiveness of the learned GCNs w.r.t. the related work.  ...  Mid-level Features and Spatio-Temporal Context for Activity Recognition. Pattern Recognition. volume 45, number 12, 4182-4191, 2012 [31] Z. Chenyi and Q. Ma.  ...  HON4D: Histogram of Oriented 4D Normals for Activity Recognition from Depth Sequences. In CVPR, pages 716–723, 2013. [95] H. Rahmani and A. Mian. 3D Action Recognition from Novel Viewpoints.  ... 
arXiv:2104.04255v2 fatcat:pu7elcvjgjfznfgnpsjauzimtm

Hydrogeology [chapter]

2017 Encyclopedia of GIS  
Biometrika 86(4):815-829 Wikle CK, Hooten MB (2006) Hierarchical Bayesian spatio-temporal models for population spread.  ...  Oxford University Press, Oxford, pp 145-169 Wikle CK, Hooten MB (2010) A general science-based framework for dynamical spatio-temporal models.  ...  Cross-References Autocorrelation, Spatial Data Analysis, Spatial Hierarchical Spatial Models Semivariogram Modeling Uncertainty, Modeling with Spatial and Temporal  ... 
doi:10.1007/978-3-319-17885-1_100563 fatcat:pc6ao5iuwjeh3mopiapeokmkq4

Hand gesture spotting and recognition using HMMs and CRFs in color image sequences [article]

Mahmoud Othman Selim Mahmoud Elmezain, Universitäts- Und Landesbibliothek Sachsen-Anhalt, Martin-Luther Universität, Ayoub Hamadi, Bernd Michaelis
2018
Upon the detection of the start and the end points, in between points trajectory is sent to the recognizer for recognition.  ...  So, a time delay is observed between the meaningful gesture spotting and recognition. This time delay is unacceptable for online applications.  ...  The experiments demonstrate that the proposed systems with HMMs and CRFs are accurate and efficient for spatio-temporal variabilities.  ... 
doi:10.25673/5091 fatcat:5nxuxsugmjdupmxclcmn3nay5a

2020 Index IEEE Transactions on Systems, Man, and Cybernetics: Systems Vol. 50

2020 IEEE Transactions on Systems, Man & Cybernetics. Systems  
The Author Index contains the primary entry for each item, listed under the first author's name.  ...  ., +, TSMC Jan. 2020 318-335 Efficient Sensor Deployments for Spatio-Temporal Environmental Monitor-ing.  ...  ., +, TSMC Nov. 2020 4836-4849 Efficient Sensor Deployments for Spatio-Temporal Environmental Monitor-ing.  ... 
doi:10.1109/tsmc.2021.3054492 fatcat:zartzom6xvdpbbnkcw7xnsbeqy

Computer Vision for Autonomous Vehicles: Problems, Datasets and State of the Art [article]

Joel Janai, Fatma Güney, Aseem Behl, Andreas Geiger
2021 arXiv   pre-print
, scene understanding, and end-to-end learning for autonomous driving.  ...  Our survey includes both the historically most relevant literature as well as the current state of the art on several specific topics, including recognition, reconstruction, motion estimation, tracking  ...  [371] propose a method for optimizing the feature space of a dense CRF for spatio-temporal regularization.  ... 
arXiv:1704.05519v3 fatcat:xiintiarqjbfldheeg2hsydyra

Extraction of spatio-temporal primitives of emotional body expressions

Lars Omlor, Martin A. Giese
2007 Neurocomputing  
suggest that complex motor behavior is based on simpler spatio-temporal primitives.  ...  Transient spiking activity was elicited at one end of the chain by a brief current pulse; this activity then propagated along the chain.  ... 
doi:10.1016/j.neucom.2006.10.100 fatcat:esivhljzsbcihdl5qbp756josu

39th Annual European Brain and Behaviour Society Abstracts

2007 Neural Plasticity  
Studies, and ICTP, the Abdus Salam International Centre for Theoretical Physics.  ...  The EUROPEAN BRAIN AND BEHAVIOUR SOCIETY has held its 39th Annual General Meeting in Trieste, in the campus next to the Miramare castle and its park, co-hosted by SISSA, the International School for Advanced  ...  ACKNOWLEDGMENT This work was supported by State Committee for Scientific Research Grant N40114631/3239.  ... 
doi:10.1155/2007/23250 fatcat:7xnzbdkh5bgqxfe5vemcbmoie4

Sensors and Actuators in Smart Cities

Mohammad Hammoudeh, Mounir Arioua
2018 Journal of Sensor and Actuator Networks  
The authors are grateful to the Middle East University, Amman, Jordan for the financial support granted to cover the publication fee of this research article. Author Contributions: Abdelhamied A.  ...  Author Contributions: Alex Adim Obinikpo and Burak Kantarci conceived and pursued the literature survey on deep learning techniques on big sensed data for smart health applications, reviewed the state  ...  Two probabilistic models, HMM and CRF, were investigated for activity recognition. Kasteren et al.  ... 
doi:10.3390/jsan7010008 fatcat:pt7nkf4oaraijkmsndohahqtnq

Abstracts for the 29th Annual Meeting of the Japan Neuroscience Society (Neuroscience2006)

2006 Neuroscience research  
To measure "value", we have developed a probability matching paradigm for monkeys in which the animal's valuation is revealed through the proportion of choices allocated to alternative behaviors.  ...  Acknowledgments We wish to thank Professor Miyashita for valuable advice.  ...  Research funds: A Grant-in-Aid for Scientific Research (C) (16500195) PS2P-H147 Mechanisms for processing of intellectual excitement Ai Fukushima 1 , Naoki Miura 2,3 , Shinya Uchida 2,4 , Motoaki Sugiura  ... 
doi:10.1016/j.neures.2006.04.004 fatcat:mja5yvu2tbcjrmfx3a7abvvicm

Video-based facial expression analysis

Zhiguo Li
2010
Particularly, my work focus on robust face tracking, facial feature representation and selection under different face alignment conditions, sequential modeling for facial expression recognition.  ...  differences between different subjects for the same facial expression etc.  ...  Just as in HMM, the parameters of CRF are tied at different time steps. The number of parameters for a linear chain CRF is c * d+c 2 , where c is the number of classes.  ... 
doi:10.7282/t3bc3z9r fatcat:p7pwkdgaqffm3gukswfhv5vfhy

List of Abstracts from the XVIIIth Congress of European Chemoreception Research Organization, ECRO-2008

2008 Chemical Senses  
olfactory system, odor representations in the behaving animal can be transformed at low levels -as early as the primary sensory neurons themselves -via a variety of different mechanisms related to the active  ...  Recently a new test for psychophysical assessment of taste function was introduced 1 .  ...  Friedrich) Huc-Yc exhibited more distinct OB spatio-temporal activity patterns for L-Phe and L-Tyr than wild type zebrafish.  ... 
doi:10.1093/chemse/bjn083 fatcat:bna7hg4zsbebfabzwjw7o7yspy

List of Abstracts of the Seventeenth Annual Meeting of the European Chemoreception Research Organisation

2006 Chemical Senses  
The results obtained from this GC-MS study will allow us to build a noninvasive mobile system for noninvasive wound monitoring using an array of gas and odour sensors to be used for point of care monitoring  ...  Standard techniques for microbiological detection are surface swabbing and wound biopsy culture.  ...  for online recognition.  ... 
doi:10.1093/chemse/bjl029 fatcat:bhjdee37fjbqtgolwpshbpes5y

Crawler [chapter]

Kenneth A. Ross, Christian S. Jensen, Richard Snodgrass, Curtis E. Dyreson, Christian S. Jensen, Richard Snodgrass, Spiros Skiadopoulos, Cristina Sirangelo, Mary Lynette Larsgaard, Gösta Grahne, Daniel Kifer, Hans-Arno Jacobsen (+106 others)
2009 Encyclopedia of Database Systems  
This knowledge can be used to ensure that the algorithms have good temporal and/or spatial locality on the target platform.  ...  As a result, it is common (at the time of writing) for data accesses to RAM to require several hundred CPU cycles to resolve.  ...  As one can see, there is no single distance function that is sound for all the possible spatio-temporal queries.  ... 
doi:10.1007/978-0-387-39940-9_2315 fatcat:x4qspjdytvhvroc7h753dihp7u
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