On shadow elimination after moving region segmentation based on different threshold selection strategies

Mitra, Bhargav Kumar, Young, Rupert and Chatwin, Chris (2007) On shadow elimination after moving region segmentation based on different threshold selection strategies. Optics and Lasers in Engineering, 45 (11). pp. 1088-1093. ISSN 0143-8166

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Abstract

A popular approach for detecting moving object regions in video sequences is the application of the background subtraction technique. According to this technique the background (reference) image is subtracted from the current image frame and the moving parts are detected by the selection of a suitable threshold. In this paper we present our work to discriminate the moving pixels of the generated difference images from the relatively stationary pixels through the use of three different threshold selection strategies, namely, (i) `3s edit rule¿, (ii) rule utilizing the Hampel identifier, and (iii) rule based on an ad hoc selection of threshold. Further, after segmentation a method of classification, based on a moving shadow search technique, previously developed by the authors, has been applied to segregate the moving shadow region from the actual moving object. The speed-up achieved through the use of the three aforementioned techniques on the core moving shadow search process, compared to that where no such process has been applied, has been documented. The final outcomes of applying the shadow detection technique after segmenting using each of the threshold selection strategies, one at a time, on some indoor video sequences have been demonstrated and comparison of the methods made.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Depositing User: Bhargav Mitra
Date Deposited: 06 Feb 2012 19:53
Last Modified: 30 Mar 2012 11:48
URI: http://sro.sussex.ac.uk/id/eprint/22774
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