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. |
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dc.publisher |
ResearchSpace@Auckland |
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dc.relation.ispartof |
Masters Thesis - University of Auckland |
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dc.relation.isreferencedby |
UoA99229515714002091 |
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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 |
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dc.type |
Thesis |
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thesis.degree.discipline |
Computer Science |
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thesis.degree.grantor |
The University of Auckland |
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thesis.degree.level |
Masters |
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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 |
dc.identifier.wikidata |
Q112888788 |
|