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http://dx.doi.org/10.9728/dcs.2014.15.4.449

Codebook-Based Foreground Extraction Algorithm with Continuous Learning of Background  

Jung, Jae-Young (동양대학교 컴퓨터정보전학과)
Publication Information
Journal of Digital Contents Society / v.15, no.4, 2014 , pp. 449-455 More about this Journal
Abstract
Detection of moving objects is a fundamental task in most of the computer vision applications, such as video surveillance, activity recognition and human motion analysis. This is a difficult task due to many challenges in realistic scenarios which include irregular motion in background, illumination changes, objects cast shadows, changes in scene geometry and noise, etc. In this paper, we propose an foreground extraction algorithm based on codebook, a database of information about background pixel obtained from input image sequence. Initially, we suppose a first frame as a background image and calculate difference between next input image and it to detect moving objects. The resulting difference image may contain noises as well as pure moving objects. Second, we investigate a codebook with color and brightness of a foreground pixel in the difference image. If it is matched, it is decided as a fault detected pixel and deleted from foreground. Finally, a background image is updated to process next input frame iteratively. Some pixels are estimated by input image if they are detected as background pixels. The others are duplicated from the previous background image. We apply out algorithm to PETS2009 data and compare the results with those of GMM and standard codebook algorithms.
Keywords
Background model Learning; Background elimination; Foreground extraction; Codebook;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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