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Proceedings Paper

4D light-field sensing system for people counting
Author(s): Guangqi Hou; Chi Zhang; Yunlong Wang; Zhenan Sun
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Paper Abstract

Counting the number of people is still an important task in social security applications, and a few methods based on video surveillance have been proposed in recent years. In this paper, we design a novel optical sensing system to directly acquire the depth map of the scene from one light-field camera. The light-field sensing system can count the number of people crossing the passageway, and record the direction and intensity of rays at a snapshot without any assistant light devices. Depth maps are extracted from the raw light-ray sensing data. Our smart sensing system is equipped with a passive imaging sensor, which is able to naturally discern the depth difference between the head and shoulders for each person. Then a human model is built. Through detecting the human model from light-field images, the number of people passing the scene can be counted rapidly. We verify the feasibility of the sensing system as well as the accuracy by capturing real-world scenes passing single and multiple people under natural illumination.

Paper Details

Date Published: 3 March 2016
PDF: 8 pages
Proc. SPIE 9751, Smart Photonic and Optoelectronic Integrated Circuits XVIII, 975114 (3 March 2016); doi: 10.1117/12.2212974
Show Author Affiliations
Guangqi Hou, Institute of Automation (China)
Chi Zhang, Institute of Automation (China)
Yunlong Wang, Institute of Automation (China)
Zhenan Sun, Institute of Automation (China)


Published in SPIE Proceedings Vol. 9751:
Smart Photonic and Optoelectronic Integrated Circuits XVIII
Sailing He; El-Hang Lee; Louay A. Eldada, Editor(s)

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