3 March 2016 4D light-field sensing system for people counting
Author Affiliations +
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.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Guangqi Hou, Guangqi Hou, Chi Zhang, Chi Zhang, Yunlong Wang, Yunlong Wang, Zhenan Sun, Zhenan Sun, } "4D light-field sensing system for people counting", Proc. SPIE 9751, Smart Photonic and Optoelectronic Integrated Circuits XVIII, 975114 (3 March 2016); doi: 10.1117/12.2212974; https://doi.org/10.1117/12.2212974


Mobile platform optical design
Proceedings of SPIE (December 17 2014)
The feasibility test of state of the art face detection...
Proceedings of SPIE (February 08 2010)
Automatic Covert Vehicle Recorder
Proceedings of SPIE (September 20 1977)

Back to Top