3D point tracking in stereoscopy using a phase based cross-correlation method

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dc.contributor.advisor Nielsen, P en
dc.contributor.advisor Nash, M en
dc.contributor.advisor Taberner, A en
dc.contributor.author Azhar, Mihailo en
dc.date.accessioned 2012-03-11T23:02:12Z en
dc.date.issued 2012 en
dc.identifier.uri http://hdl.handle.net/2292/13750 en
dc.description Full text is available to authenticated members of The University of Auckland only. en
dc.description.abstract The human skin is the largest organ of the human body. It is a complex structure with anisotropic, heterogenous and viscoelastic properties lending itself to numerous aspects of the human body. It is because of this that there has been a major focus to characterise the behaviour of skin. Available instrumentation are able to apply a rich a set of deformations to regions of skin allowing for the anisotropic and non-homogenous properties to be studied. However to acquire a full understanding of how the skin is deforming, surface strains need to be analysed. This can be done by using a non-contact stereosustem. Surface deformation and therefore can be measure using stereoscopy. This investigation looked to implement a novel phase-based cross-correlation method developed at the Auckland Bioengineering Institute. It was implemented for a 3-camera stereoscopic system to track material points individually through 3D space. The phase-based cross-correlation was method characterised for a series of in-plane and out-of-plane tracking and compared against a normal cross-correlation based method. A series of unconstrained and constrained matching, with sampling from neighbouring material points, was used. In addition to this, a deformation function was incorporated into the matching algorithm to compensate for perspective distortions and shearing. Linear displacements were tracked to subpixel accuracy and measurements of in-plane angular rotation location estimates were accurate to under a micron. en
dc.publisher ResearchSpace@Auckland en
dc.relation.ispartof Masters Thesis - University of Auckland en
dc.relation.isreferencedby UoA99229515714002091 en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights Restricted Item. Available to authenticated members of The University of Auckland. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.rights.uri http://creativecommons.org/licenses/by-nc-sa/3.0/nz/ en
dc.title 3D point tracking in stereoscopy using a phase based cross-correlation method en
dc.type Thesis en
thesis.degree.discipline Computer Science en
thesis.degree.grantor The University of Auckland en
thesis.degree.level Masters en
dc.rights.holder Copyright: The author en
pubs.elements-id 317756 en
pubs.org-id Academic Services en
pubs.org-id Examinations en
pubs.record-created-at-source-date 2012-03-12 en

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