3D registration of surfaces for change detection in medical images

Elizabeth Fisher; Paul F. van der Stelt; Stanley M. Dunn

doi:10.1117/12.274146

25 April 1997 3D registration of surfaces for change detection in medical images

Elizabeth Fisher, Paul F. van der Stelt, Stanley M. Dunn

Author Affiliations +

Proceedings Volume 3034, Medical Imaging 1997: Image Processing; (1997) https://doi.org/10.1117/12.274146
Event: Medical Imaging 1997, 1997, Newport Beach, CA, United States

Abstract

Spatial registration of data sets is essential for quantifying changes that take place over time in cases where the position of a patient with respect to the sensor has been altered. Changes within the region of interest can be problematic for automatic methods of registration. This research addresses the problem of automatic 3D registration of surfaces derived from serial, single-modality images for the purpose of quantifying changes over time. The registration algorithm utilizes motion-invariant, curvature- based geometric properties to derive an approximation to an initial rigid transformation to align two image sets. Following the initial registration, changed portions of the surface are detected and excluded before refining the transformation parameters. The performance of the algorithm was tested using simulation experiments. To quantitatively assess the registration, random noise at various levels, known rigid motion transformations, and analytically-defined volume changes were applied to the initial surface data acquired from models of teeth. These simulation experiments demonstrated that the calculated transformation parameters were accurate to within 1.2 percent of the total applied rotation and 2.9 percent of the total applied translation, even at the highest applied noise levels and simulated wear values.

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Elizabeth Fisher, Paul F. van der Stelt, and Stanley M. Dunn "3D registration of surfaces for change detection in medical images", Proc. SPIE 3034, Medical Imaging 1997: Image Processing, (25 April 1997); https://doi.org/10.1117/12.274146

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