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Detail of Publication

Text Language English
Authors Masakazu Iwamura, Shunsuke Mori, Koichiro Nakamura, Takuya Tanoue, Yuzuko Utsumi, Yasushi Makihara, Daigo Muramatsu, Koichi Kise, and Yasushi Yagi
Title Individuality-preserving Silhouette Extraction for Gait Recognition and Its Speedup
Journal IEICE Transactions on Information and Systems
Vol. E104-D
No. 7
Pages pp.992-1001
Reviewed or not Reviewed
Month & Year July 2021
Abstract Most gait recognition approaches rely on silhouette-based representations due to high recognition accuracy and computational efficiency. A fundamental problem for those approaches is how to extract individuality-preserved silhouettes from real scenes accurately. Foreground colors may be similar to background colors, and the background is cluttered. Therefore, we propose a method of individuality-preserving silhouette extraction for gait recognition using standard gait models (SGMs) composed of clean silhouette sequences of various training subjects as shape priors. The SGMs are smoothly introduced into a well-established graph-cut segmentation framework. Experiments showed that the proposed method achieved better silhouette extraction accuracy by more than 2.3% than representative methods and better identification rate of gait recognition (improved by more than 11.0% at rank 20). Besides, to reduce the computation cost, we introduced approximation in the calculation of dynamic programming. As a result, without reducing the segmentation accuracy, we reduced 85.0% of the computational cost.
DOI 10.1587/transinf.2020ZDP7500
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