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The influence of the spatial distribution of 2D features on pose estimation for a visual pipe mapping sensor

Summan, Rahul and Dobie, Gordon and West, Graeme and Marshall, Stephen and Macleod, Charles and Pierce, Gareth (2017) The influence of the spatial distribution of 2D features on pose estimation for a visual pipe mapping sensor. IEEE Sensors Journal. ISSN 1530-437X

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    Abstract

    This paper considers factors which influence the visual motion estimation of a sensor system designed for visually mapping the internal surface of pipework using omnidirectional lenses. In particular, a systematic investigation of the error caused by a non-uniform 2D spatial distribution of features on the resultant estimate of camera pose is presented. The effect of non-uniformity is known to cause issue and is commonly mitigated using techniques such as bucketing, however, a rigorous analysis of this problem has not been carried out in the literature. The pipe’s inner surface tend to be uniform and texture poor driving the need to understand and quantify the feature matching process. A simulation environment is described in which the investigation was conducted in a controlled manner. Pose error and uncertainty is considered as a function of the number of correspondences and feature coverage pattern in the form of contiguous and equiangular coverage around a circular image acquired by a fisheye lens. It is established that beyond 16 feature matches between the images, that coverage is the most influential variable, with the equiangular coverage pattern leading to a greater rate of reduction in pose error with increasing coverage. The application of the results of the simulation to a real world dataset are also provided.

    Author(s):Summan, Rahul ORCID: https://orcid.org/0000-0002-4090-4528, Dobie, Gordon ORCID: https://orcid.org/0000-0003-3972-5917, West, Graeme ORCID: https://orcid.org/0000-0003-0884-6070, Marshall, Stephen ORCID: https://orcid.org/0000-0001-7079-5628, Macleod, Charles ORCID: https://orcid.org/0000-0003-4364-9769 and Pierce, Gareth ORCID: https://orcid.org/0000-0003-0312-8766
    Item type:Article
    ID code:61360
    Notes:(c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
    Keywords:bucketing, cameras, distribution functions, graphical models, inspection, lenses, pipe scanning, structure from motion, three-dimensional displays, visualization, Electrical engineering. Electronics Nuclear engineering, Instrumentation, Electrical and Electronic Engineering
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Technology and Innovation Centre > Sensors and Asset Management
    Strategic Research Themes > Energy
    Strategic Research Themes > Advanced Manufacturing and Materials
    Strategic Research Themes > Measurement Science and Enabling Technologies
    Depositing user: Pure Administrator
    Date deposited:25 Jul 2017 14:31
    Last modified:21 Jun 2019 03:15
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/61360
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