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Description
Title: | A foreground detection system for automatic surveillance |
Author(s): | Dikmen, Mert |
Advisor(s): | Huang, Thomas S. |
Contributor(s): | Huang, Thomas S. |
Department / Program: | Electrical & Computer Eng |
Discipline: | Electrical & Computer Engr |
Degree Granting Institution: | University of Illinois at Urbana-Champaign |
Degree: | M.S. |
Genre: | Thesis |
Subject(s): | computer vision
background subtraction sparse representation linear decoding automatic surveillance |
Abstract: | Automated surveillance has long been an application goal of computer vision. An integral part of such surveillance systems is concerned with accurately segmenting foreground objects from the static background in the videos. In this thesis we introduce a novel system for background subtraction, which takes a di erent approach than the conventional background subtraction systems. We make the assumption that the video background is stationary and the foreground objects take up only a small portion of the entire frame at any given time. This speci c assumption allows us to formulate the foreground signal as a sparse additive error introduced to otherwise clean background signal. We outline the algorithm for performing background subtraction using linear programming, and demonstrate accurate segmentations of foreground objects under realistic surveillance scenarios. The proposed method is on par with the state of the art approaches for accurately segmenting the foreground under challenging conditions. Furthermore we propose several methods for building a set of bases to represent the background and provide empirical justi cation of their e ectiveness. |
Issue Date: | 2010-01-06 |
URI: | http://hdl.handle.net/2142/14760 |
Rights Information: | Copyright 2009 Mert Dikmen |
Date Available in IDEALS: | 2010-01-06 2012-01-07 |
Date Deposited: | December 2 |
This item appears in the following Collection(s)
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Dissertations and Theses - Electrical and Computer Engineering
Dissertations and Theses in Electrical and Computer Engineering -
Graduate Dissertations and Theses at Illinois
Graduate Theses and Dissertations at Illinois