Estimating 3D hand pose using hierarchical multi-label classification

Authors:
B. Stenger;A. Thayananthan;P. H. S. Torr;R. Cipolla
Affiliations:
Toshiba Cambridge Research Laboratory, 1 Guildhall Street, Cambridge CB2 3NH, UK;University of Cambridge, Department of Engineering, Cambridge CB2 1PZ, UK;Oxford Brookes University, Department of Computing, Oxford OX33 1HX, UK;University of Cambridge, Department of Engineering, Cambridge CB2 1PZ, UK
Venue:
Image and Vision Computing
Year:
2007

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Abstract

This paper presents an analysis of the design of classifiers for use in a hierarchical object recognition approach. In this approach, a cascade of classifiers is arranged in a tree in order to recognize multiple object classes. We are interested in the problem of recognizing multiple patterns as it is closely related to the problem of locating an articulated object. Each different pattern class corresponds to the hand in a different pose, or set of poses. For this problem obtaining labelled training data of the hand in a given pose can be problematic. Given a parametric 3D model, generating training data in the form of example images is cheap, and we demonstrate that it can be used to design classifiers almost as good as those trained using non-synthetic data. We compare a variety of different template-based classifiers and discuss their merits.