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Proceedings Paper

Model-based prediction of phalanx radiograph boundaries
Author(s): Tod S. Levitt; Marcus W. Hedgcock; D. N. Vosky; Vera Michele Shadle
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Paper Abstract

In this study we use a strong model of the center of the phalanx in hand radiographs to predict continuation of the phalanx boundary. The center phalanx is robustly segmented using conventional approaches. Estimating tangents allows us to find the minimum width of the phalanx by parallel tangent lines. This in turn predicts the phalanx 'center'. The phalanx boundaries are modeled as cubic splines, and the coronal cross-section is modeled as a hemi- ellipse. Using initial localization from the phalanx center and the above parametric models, the model of radiographic imaging is used to predict the continuation of the boundary. Results are shown for least squared error of model spline fits to continuation of the phalanx boundary anchored by initial match on the center of the projected phalanx.

Paper Details

Date Published: 14 September 1993
PDF: 9 pages
Proc. SPIE 1898, Medical Imaging 1993: Image Processing, (14 September 1993); doi: 10.1117/12.154555
Show Author Affiliations
Tod S. Levitt, San Francisco VA Medical Ctr. and Univ. of California/San Francisco (United States)
Marcus W. Hedgcock, San Francisco VA Medical Ctr. and Univ. of California/San Francisco (United States)
D. N. Vosky, San Francisco VA Medical Ctr. and Univ. of California/San Francisco (United States)
Vera Michele Shadle, San Francisco VA Medical Ctr. and Univ. of California/San Francisco (United States)


Published in SPIE Proceedings Vol. 1898:
Medical Imaging 1993: Image Processing
Murray H. Loew, Editor(s)

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