Gait identification using invisible shadows: Robustness to appearance changes

Yumi Iwashita, Ryo Kurazume, Adrian Stoica

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

This paper presents a person identification technique that uses information from person's shadow, and is robust to appearance changes caused by variations of clothes and carried objects. The technique uses invisible lights and resulting shadows and has advantages from undetected sensing. The shadows on the ground obtained through illumination by multiple lights can be considered as silhouettes captured by multiple virtual cameras placed at light positions. Thus, a single camera, e.g. in the ceiling, is able to obtain multiple silhouettes, equivalent to a multi-camera system. If the person's appearance changes compared to the training cases in the database, e.g. by wearing different clothes or carrying a/another bag, then the identification performance gets worse. To deal with this problem, we introduce a new shadow-based identification technique robust to appearance changes. Firstly, we divide each shadow area into several parts, and estimate the discrimination capability for each part based on gait features between gallery datasets and probe dataset. Next, according to the estimated capability, we adaptively control the priorities of these parts in the person identification method. We constructed a new shadow database with a variety of clothes and bags, and carried out successful experiments to verify the effectiveness of the proposed technique.

Original languageEnglish
Title of host publicationProceedings - 2014 International Conference on Emerging Security Technologies, EST 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages34-39
Number of pages6
ISBN (Electronic)9781479970070
DOIs
Publication statusPublished - Dec 11 2014
Event5th International Conference on Emerging Security Technologies, EST 2014 - Alcala de Henares, Spain
Duration: Sep 10 2014Sep 12 2014

Publication series

NameProceedings - 2014 International Conference on Emerging Security Technologies, EST 2014

Other

Other5th International Conference on Emerging Security Technologies, EST 2014
CountrySpain
CityAlcala de Henares
Period9/10/149/12/14

All Science Journal Classification (ASJC) codes

  • Human-Computer Interaction
  • Control and Systems Engineering
  • Artificial Intelligence
  • Safety, Risk, Reliability and Quality

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