Synchronized Tracking in Multiple Omnidirectional Cameras with Overlapping View

Houari SABIRIN  Hitoshi NISHIMURA  Sei NAITO  

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E102-D   No.11   pp.2221-2229
Publication Date: 2019/11/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.2018EDP7305
Type of Manuscript: PAPER
Category: Image Recognition, Computer Vision
Keyword: 
weighted undirected graph,  multiple objects detection and tracking,  multiple overlapping cameras,  surveillance,  

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Summary: 
A multi-camera setup for a surveillance system enables a larger coverage area, especially when a single camera has limited monitoring capability due to certain obstacles. Therefore, for large-scale coverage, multiple cameras are the best option. In this paper, we present a method for detecting multiple objects using several cameras with large overlapping views as this allows synchronization of object identification from a number of views. The proposed method uses a graph structure that is robust enough to represent any detected moving objects by defining their vertices and edges to determine their relationships. By evaluating these object features, represented as a set of attributes in a graph, we can perform lightweight multiple object detection using several cameras, as well as performing object tracking within each camera's field of view and between two cameras. By evaluating each vertex hierarchically as a subgraph, we can further observe the features of the detected object and perform automatic separation of occluding objects. Experimental results show that the proposed method would improve the accuracy of object tracking by reducing the occurrences of incorrect identification compared to individual camera-based tracking.