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What is Covariance Measure

Encyclopedia of Information Science and Technology, Fourth Edition
Covariance measures the degree to which two variables change or vary together (i.e. co-vary).
Published in Chapter:
Moving Object Detection and Tracking Based on the Contour Extraction and Centroid Representation
Naveenkumar M (National Institute of Technology Trichy, India), Sriharsha K. V. (National Institute of Technology Trichy, India), and Vadivel A (National Institute of Technology Trichy, India)
DOI: 10.4018/978-1-5225-2255-3.ch019
Abstract
This chapter presents a novel approach for moving object detection and tracking based on the Contour Extraction and Centroid Representation (CECR). Firstly, two consecutive frames are read from the video and they are converted into gray scale. Next, the absolute difference is calculated between them and the result frame is converted into binary by applying gray threshold technique. The binary frame is segmented using contour extraction algorithm. The centroid representation is used for motion tracking. In the second stage of experiment, initially object is detected by using CECR and motion of each track is estimated by kalman filter. Experimental results show that the proposed method can robustly detect and track the moving object.
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