Harnessing Object and Scene Semantics for Large-Scale Video Understanding

Zuxuan Wu, Yanwei Fu, Yu-Gang Jiang, Leonid Sigal; Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2016, pp. 3112-3121

Abstract


Large-scale action recognition and video categorization are important problems in computer vision. To address these problems, we propose a novel object- and scene-based semantic fusion network and representation. Our semantic fusion network combines three streams of information using a three-layer neural network: (i) frame-based low-level CNN features, (ii) object features from a state-of-the-art large-scale CNN object-detector trained to recognize 20K classes, and (iii) scene features from a state-of-the-art CNN scene-detector trained to recognize 205 scenes. The trained network achieves improvements in supervised activity and video categorization in two complex large-scale datasets - ActivityNet and FCVID, respectively. Further, by examining and back propagating information through the fusion network, semantic relationships (correlations) between video classes and objects/scenes can be discovered. These video class-object/video class-scene relationships can in turn be used as semantic representation for the video classes themselves. We illustrate effectiveness of this semantic representation through experiments on zero-shot action/video classification and clustering.

Related Material


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[bibtex]
@InProceedings{Wu_2016_CVPR,
author = {Wu, Zuxuan and Fu, Yanwei and Jiang, Yu-Gang and Sigal, Leonid},
title = {Harnessing Object and Scene Semantics for Large-Scale Video Understanding},
booktitle = {Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition (CVPR)},
month = {June},
year = {2016}
}