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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/6535

Title: Colour based rigid body tracking using three-dimensional graphics models
Authors: Trewartha, Grant
Yeadon, Maurice R.
Knight, Jon
Keywords: Video
Rigid body
Issue Date: 2003
Publisher: Springer / © ISEA
Citation: TREWARTHA, G., YEADON, M.R. and KNIGHT, J.P. 2003. Colour based rigid body tracking using three-dimensional graphics models. Sports Engineering, 6 (3), pp.139-148.
Abstract: This paper introduces the first stage of a new model-based approach to three-dimensional (3D) human movement tracking. A ‘generate-and-test’ matching procedure was adopted by matching rendered images of a 3D computer graphics model of the human body to target images of rigid body motion. The set of pixels to be compared were just those corresponding to the model of the body in the rendered images. The matching criterion to optimise model position and orientation was based on the minimisation of the RGB colour difference between generated model images and associated target images. The method was able to track synthetic image sequences of a half twisting somersault accurately with root mean square errors of less than 5 mm and 0.3° for position and orientation estimates respectively. The suitability of the proposed approach for rigid body motion tracking was supported by additional tracking experiments on video image sequences of ‘wooden cross’ trajectories. Comparisons of tracked estimates against manual digitising estimates returned relatively small rms difference values on both side somersault and twisting somersault movements. The proposed approach has the potential to track video images of a human torso using a rigid body model and hence to track articulated movements by successively adding segments to the model in a hierarchical manner.
Description: This article was published in the journal, Sports Engineering [Springer /© ISEA]. The original publication is available at www.springerlink.com or http://dx.doi.org/10.1007/BF02859891
Version: Accepted for publication
DOI: 10.1007/BF02859891
URI: https://dspace.lboro.ac.uk/2134/6535
ISSN: 1369-7072
Appears in Collections:Published Articles (Sport, Exercise and Health Sciences)

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