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A fast and accurate moving object tracker in active camera model

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Abstract

Detecting and tracking moving objects within a scene is an essential step for high-level machine vision applications such as video content analysis. In this paper, we propose a fast and accurate method for tracking an object of interest in a dynamic environment (active camera model). First, we manually select the region of the object of interest and extract three statistical features, namely the mean, the variance and the range of intensity values of the feature points lying inside the selected region. Then, using the motion information of the background’s feature points and k-means clustering algorithm, we calculate camera motion transformation matrix. Based on this matrix, the previous frame is transformed to the current frame’s coordinate system to compensate the impact of camera motion. Afterwards, we detect the regions of moving objects within the scene using our introduced frame difference algorithm. Subsequently, utilizing DBSCAN clustering algorithm, we cluster the feature points of the extracted regions in order to find the distinct moving objects. Finally, we use the same statistical features (the mean, the variance and the range of intensity values) as a template to identify and track the moving object of interest among the detected moving objects. Our approach is simple and straightforward yet robust, accurate and time efficient. Experimental results on various videos show an acceptable performance of our tracker method compared to complex competitors.

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Notes

  1. http://www.emgu.com/wiki/index.php/Main_Page

  2. The box that surrounds the whole object of interest and is calculated manually in each and every frame of the test videos.

  3. Best rates are bold faced in the tables.

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Correspondence to Nacer Farajzadeh.

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Farajzadeh, N., Karamiani, A. & Hashemzadeh, M. A fast and accurate moving object tracker in active camera model. Multimed Tools Appl 77, 6775–6797 (2018). https://doi.org/10.1007/s11042-017-4597-x

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