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Showing 1 to 4 of 4 for “"variational level set"”.
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A Hybrid Variational-Level Set Approach to Handle Topological Changes
… are imminent. When a change occurs, we use a level set method to guide the change of topology of the domain mesh. This is then followed by an optimization step, using a variational formulation, that seeks to improve boundary mesh conformity to the zero level contour of the level set function. …
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Frugal hypothesis testing and classification
… surface area regularization and optimization via variational level set methods is developed. This novel classifier is termed the geometric level set (GLS) classifier. A method for joint dimensionality reduction and margin-based classification with optimization on the Stiefel manifold is developed. …
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AUTOMATED MIDLINE SHIFT DETECTION ON BRAIN CT IMAGES FOR COMPUTER-AIDED CLINICAL DECISION SUPPORT
… (SSA) is designed to automatically select a subset of appropriate CT slices from a large number of raw images for MLS detection. Next, ideal midline detection is implemented based on skull bone anatomical features and global rotation assumptions. For the actual midline detection algorithm, a …
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Numerical Prediction of Drag Reduction and Interfacial Shapes Over Superhydrophobic Surfaces
… A Gibbs energy minimizer is developed using a level set framework to determine interfacial equilibrium locations over realistic rough surfaces given an external pressure and surface properties. Both laminar and turbulent regimes are investigated. Direct numerical simulation (DNS) is used to …