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17th International Conference on Pattern Recognition (ICPR'04) - Volume 4
Simplest Representation Yet for Gait Recognition: Averaged Silhouette
Cambridge UK
August 23-August 26
ISBN: 0-7695-2128-2
Zongyi Liu, University of South Florida, Tampa, FL
Sudeep Sarkar, University of South Florida, Tampa, FL
We present a robust representation for gait recognition that is compact, easy to construct, and affords efficient matching. Instead of a time series based representation comprising of a sequence of raw silhouette frames or of features extracted therein, as has been the practice, we simply align and average the silhouettes over one gait cycle. We then base recognition on the Euclidean distance between these averaged silhouette representations. We show, using the recently formulated gait challenge problem (www.gaitchallenge.org), that the improvement in execution time is 30 times while possessing recognition power that is comparable to the gait baseline algorithm, which is becoming the comparison standard in gait recognition. Experiments with portions of the average silhouette representation show that recognition power is not entirely derived from upper body shape, rather the dynamics of the legs also contribute equally to recognition. However, this study does raise intriguing doubts about the need for accurate shape and dynamics representations for gait recognition.
Citation:
Zongyi Liu, Sudeep Sarkar, "Simplest Representation Yet for Gait Recognition: Averaged Silhouette," icpr, vol. 4, pp.211-214, 17th International Conference on Pattern Recognition (ICPR'04) - Volume 4, 2004
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