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Sensors 2017, 17(7), 1546;

Moving Object Detection in Heterogeneous Conditions in Embedded Systems

Dipartimento di Automatica ed Informatica, Politecnico di Torino, 10129 Torino, Italy
Author to whom correspondence should be addressed.
Received: 25 May 2017 / Revised: 23 June 2017 / Accepted: 27 June 2017 / Published: 1 July 2017
(This article belongs to the Special Issue Sensors for Transportation)
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This paper presents a system for moving object exposure, focusing on pedestrian detection, in external, unfriendly, and heterogeneous environments. The system manipulates and accurately merges information coming from subsequent video frames, making small computational efforts in each single frame. Its main characterizing feature is to combine several well-known movement detection and tracking techniques, and to orchestrate them in a smart way to obtain good results in diversified scenarios. It uses dynamically adjusted thresholds to characterize different regions of interest, and it also adopts techniques to efficiently track movements, and detect and correct false positives. Accuracy and reliability mainly depend on the overall receipt, i.e., on how the software system is designed and implemented, on how the different algorithmic phases communicate information and collaborate with each other, and on how concurrency is organized. The application is specifically designed to work with inexpensive hardware devices, such as off-the-shelf video cameras and small embedded computational units, eventually forming an intelligent urban grid. As a matter of fact, the major contribution of the paper is the presentation of a tool for real-time applications in embedded devices with finite computational (time and memory) resources. We run experimental results on several video sequences (both home-made and publicly available), showing the robustness and accuracy of the overall detection strategy. Comparisons with state-of-the-art strategies show that our application has similar tracking accuracy but much higher frame-per-second rates. View Full-Text
Keywords: motion estimation; human detection; tracking; embedded systems; automatic surveillance motion estimation; human detection; tracking; embedded systems; automatic surveillance

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Garbo, A.; Quer, S. Moving Object Detection in Heterogeneous Conditions in Embedded Systems. Sensors 2017, 17, 1546.

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