3D Topology Preserving Flows for Viewpoint-Based Cortical Unfolding
We present a variational method for unfolding of the cortex based on a user-chosen point of view as an alternative to more traditional global flattening methods, which incur more distortion around the region of interest. Our approach involves three novel contributions. The first is an energy functio...
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| Veröffentlicht in: | International journal of computer vision 2009-12, Vol.85 (3), p.223-236 |
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| container_title | International journal of computer vision |
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| creator | Rocha, Kelvin R. Sundaramoorthi, Ganesh Yezzi, Anthony J. Prince, Jerry L. |
| description | We present a variational method for unfolding of the cortex based on a user-chosen point of view as an alternative to more traditional global flattening methods, which incur more distortion around the region of interest. Our approach involves three novel contributions. The first is an energy function and its corresponding gradient flow to measure the average visibility of a region of interest of a surface with respect to a given viewpoint. The second is an additional energy function and flow designed to preserve the 3D topology of the evolving surface. The third is a method that dramatically improves the computational speed of the 3D topology preservation approach by creating a tree structure of the 3D surface and using a recursion technique. Experiments results show that the proposed approach can successfully unfold highly convoluted surfaces such as the cortex while preserving their topology during the evolution. |
| doi_str_mv | 10.1007/s11263-009-0214-4 |
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| subjects | Artificial Intelligence Computer Imaging Computer Science Cortexes Image Processing and Computer Vision Mathematical analysis Mathematical models Pattern Recognition Pattern Recognition and Graphics Preserves Preserving Studies Three dimensional Topology Variational methods Vision |
| title | 3D Topology Preserving Flows for Viewpoint-Based Cortical Unfolding |
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