Action recognition using canonical correlation kernels

Authors:
G. Nagendar;Sai Ganesh Bandiatmakuri;Mahesh Goud Tandarpally;C. V. Jawahar
Affiliations:
Centre for Visual Information Technology, IIIT Hyderabad, India;Centre for Visual Information Technology, IIIT Hyderabad, India;Centre for Visual Information Technology, IIIT Hyderabad, India;Centre for Visual Information Technology, IIIT Hyderabad, India
Venue:
ACCV'12 Proceedings of the 11th Asian conference on Computer Vision - Volume Part III
Year:
2012

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Abstract

In this paper, we propose the canonical correlation kernel (CCK), that seamlessly integrates the advantages of lower dimensional representation of videos with a discriminative classifier like SVM. In the process of defining the kernel, we learn a low-dimensional (linear as well as nonlinear) representation of the video data, which is originally represented as a tensor. We densely compute features at single (or two) frame level, and avoid any explicit tracking. Tensor representation provides the holistic view of the video data, which is the starting point of computing the CCK. Our kernel is defined in terms of the principal angles between the lower dimensional representations of the tensor, and captures the similarity of two videos in an efficient manner. We test our approach on four public data sets and demonstrate consistent superior results over the state of the art methods, including those that use canonical correlations.