The Mathematical Institute, University of Oxford, Eprints Archive

Simplified multitarget tracking using the PHD filter for microscopic video data

Wood, T and Yates, C A and Wilkinson, D and Rosser, G (2012) Simplified multitarget tracking using the PHD filter for microscopic video data. IEE Transactions on Circuits and Systems for Video Technology, 22 (5). pp. 702-713.



The probability hypothesis density (PHD) filter from the theory of random finite sets is a well-known method for multitarget tracking. We present the Gaussian mixture (GM) and improved sequential Monte Carlo implementations of the PHD filter for visual tracking. These implementations are shown to provide advantages over previous PHD filter implementations on visual data by removing complications such as clustering and data association and also having beneficial computational characteristics. The GM-PHD filter is deployed on microscopic visual data to extract trajectories of free-swimming bacteria in order to analyze their motion. Using this method, a significantly larger number of tracks are obtained than was previously possible. This permits calculation of reliable distributions for parameters of bacterial motion. The PHD filter output was tested by checking agreement with a careful manual analysis. A comparison between the PHD filter and alternative tracking methods was carried out using simulated data, demonstrating superior performance by the PHD filter in a range of realistic scenarios.

Item Type:Article
Subjects:A - C > Biology and other natural sciences
Research Groups:Centre for Mathematical Biology
ID Code:1773
Deposited By: Sara Jolliffe
Deposited On:12 Feb 2014 08:49
Last Modified:29 May 2015 19:28

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