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Applied Computational Intelligence and Soft Computing
Volume 2017, Article ID 9830641, 13 pages
https://doi.org/10.1155/2017/9830641
Research Article

Multiscale Convolutional Neural Networks for Hand Detection

1Department of Computer Science and Software Engineering, Xi’an Jiaotong-Liverpool University, Suzhou 215123, China
2Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, UK

Correspondence should be addressed to Shiyang Yan; nc.ude.ultjx@nay.gnayihs

Received 10 November 2016; Revised 19 January 2017; Accepted 2 April 2017; Published 22 May 2017

Academic Editor: Xinzheng Xu

Copyright © 2017 Shiyang Yan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Unconstrained hand detection in still images plays an important role in many hand-related vision problems, for example, hand tracking, gesture analysis, human action recognition and human-machine interaction, and sign language recognition. Although hand detection has been extensively studied for decades, it is still a challenging task with many problems to be tackled. The contributing factors for this complexity include heavy occlusion, low resolution, varying illumination conditions, different hand gestures, and the complex interactions between hands and objects or other hands. In this paper, we propose a multiscale deep learning model for unconstrained hand detection in still images. Deep learning models, and deep convolutional neural networks (CNNs) in particular, have achieved state-of-the-art performances in many vision benchmarks. Developed from the region-based CNN (R-CNN) model, we propose a hand detection scheme based on candidate regions generated by a generic region proposal algorithm, followed by multiscale information fusion from the popular VGG16 model. Two benchmark datasets were applied to validate the proposed method, namely, the Oxford Hand Detection Dataset and the VIVA Hand Detection Challenge. We achieved state-of-the-art results on the Oxford Hand Detection Dataset and had satisfactory performance in the VIVA Hand Detection Challenge.