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Proceedings Paper

Postprocessing cylindrical surface data of a subject's head
Author(s): Joseph H. Nurre
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Paper Abstract

Full field surface data of cylindrically shaped objects, such as a human's head, can be quickly achieved by rotating a laser scanner and imaging system about the subject. The measurements are, however, subject to random noise. The noise can be due to stray external light sources or unexpected surface reflection and refraction characteristics. The noise presents itself as high frequency surface roughness and surface spikes. To smooth the data, a regularization technique is employed. First, spikes in the data were identified with a medium filter. The cylindrical format of the data required special consideration when implementing the medium filter. Surface patches further away from the cylindrical axis had fewer sampling points for determining a medium. With the spikes identified, regularization could be used to reduce the discontinuities of the surface data by interpolating these points to an appropriate location.

Paper Details

Date Published: 29 July 1993
PDF: 7 pages
Proc. SPIE 1905, Biomedical Image Processing and Biomedical Visualization, (29 July 1993); doi: 10.1117/12.148699
Show Author Affiliations
Joseph H. Nurre, Ohio Univ. (United States)

Published in SPIE Proceedings Vol. 1905:
Biomedical Image Processing and Biomedical Visualization
Raj S. Acharya; Dmitry B. Goldgof, Editor(s)

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