Timezone: »
We propose a discriminative model for recognizing group activities. Our model jointly captures the group activity, the individual person actions, and the interactions among them. Two new types of contextual information, group-person interaction and person-person interaction, are explored in a latent variable framework. Different from most of the previous latent structured models which assume a predefined structure for the hidden layer, e.g. a tree structure, we treat the structure of the hidden layer as a latent variable and implicitly infer it during learning and inference. Our experimental results demonstrate that by inferring this contextual information together with adaptive structures, the proposed model can significantly improve activity recognition performance.
Author Information
Tian Lan (Simon Fraser University)
Yang Wang (University of Manitoba)
Weilong Yang (Google Inc.)
Greg Mori (Borealis AI)
More from the Same Authors
-
2021 : [O2] Not too close and not too far: enforcing monotonicity requires penalizing the right points »
Joao Monteiro · · Hossein Hajimirsadeghi · Greg Mori -
2021 Poster: Continuous Latent Process Flows »
Ruizhi Deng · Marcus Brubaker · Greg Mori · Andreas Lehrmann -
2020 Poster: Modeling Continuous Stochastic Processes with Dynamic Normalizing Flows »
Ruizhi Deng · Bo Chang · Marcus Brubaker · Greg Mori · Andreas Lehrmann -
2018 Poster: Probabilistic Neural Programmed Networks for Scene Generation »
Zhiwei Deng · Jiacheng Chen · YIFANG FU · Greg Mori -
2018 Spotlight: Probabilistic Neural Programmed Networks for Scene Generation »
Zhiwei Deng · Jiacheng Chen · YIFANG FU · Greg Mori -
2016 Poster: Infinite Hidden Semi-Markov Modulated Interaction Point Process »
matt zhang · Peng Lin · Peng Lin · Ting Guo · Yang Wang · Yang Wang · Fang Chen -
2013 Poster: Action is in the Eye of the Beholder: Eye-gaze Driven Model for Spatio-Temporal Action Localization »
Nataliya Shapovalova · Michalis Raptis · Leonid Sigal · Greg Mori -
2013 Poster: Latent Maximum Margin Clustering »
Guang-Tong Zhou · Tian Lan · Arash Vahdat · Greg Mori -
2012 Poster: Kernel Latent SVM for Visual Recognition »
Weilong Yang · Yang Wang · Arash Vahdat · Greg Mori -
2010 Poster: A Discriminative Latent Model of Image Region and Object Tag Correspondence »
Yang Wang · Greg Mori -
2009 Poster: A Rate Distortion Approach for Semi-Supervised Conditional Random Fields »
Yang Wang · Gholamreza Haffari · Shaojun Wang · Greg Mori -
2008 Poster: Learning a discriminative hidden part model for human action recognition »
Yang Wang · Greg Mori -
2008 Spotlight: Learning a discriminative hidden part model for human action recognition »
Yang Wang · Greg Mori