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Computerized cephalometric analysis currently requires manual identification of landmark locations. This process is time-consuming and limited in accuracy. The purpose of this study was to develop and test a novel method for automatic computer identification of cephalometric landmarks. Spatial spectroscopy (SS) is a computerized method that identifies image(More)
Volume rendering is the generation of images from discrete samples of volume data. The volume data is sampled in at least three dimensions and comes in three basic classes: the rectilinear mesh-for example, a stack of computed tomography scans; the curvilinear mesh-for example, computational fluid dynamic data sets of the flow of air over an airplane wing;(More)
We present an approach for controlling relaxation parameters in variable conductance diffusion. This approach incorporates a Bayesian classifier to perform a partial labeling of an image, followed by a diffusion step. Conductance values between pixels are controlled by statistical measurements made of the partial classification. Several iterations follow,(More)
The diagnostic process of orthodontics requires the analysis of a cephalometric radiograph. Image landmarks on this two-dimensional lateral projection image of the patient's head are manually identified and spatial relationships are evaluated. This method is very time consuming. A reliable method for automatic computer landmark identification does not(More)
Michael A. Bajura: (Under the direction of Henry Fuchs) This dissertation explores the problem of inserting virtual (computer-generated) objects into natural scenes in video-based augmented-reality (AR) systems. The augmented-reality system problems addressed are the shorter-term goal of making synthetic objects appear to be more stable and registered and(More)
Acknowledgement I would like to thank my thesis advisor, Professor Frederick P. Brooks, Jr., for his full support of the ARM project. In 1976 he already had the idea to the use force-feedback ARM in the molecular docking problems. Dr. Mike Cory and Professor David Richardson were the pioneer users of the prototype system from the beginning. have given(More)
Effective display of computer-generated biomedical images draws on computer graphics and image processing, display technology and human factors, visual psychophysics and perception, cognitive psychology, and the new field of scientific data visualization. In converting from raw, acquired data to a visual display, developers need to know the limitations of(More)