Gunn, S.R. and Nixon, M.S.
Snake Head Boundary Extraction using Local and Global Energy Minimisation
At IEEE Int. Conf. on Pattern Recognition, Austria.
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Snakes are now a very popular technique for shape extraction by minimising a suitably formulated energy functional. A dual snake configuration using dynamic programming has been developed to locate a global energy minimum. This complements recent approaches to global energy minimisation via simulated annealing and genetic algorithms. These differ from a conventional evolutionary snake approach, where an energy function is minimised according to a local optimisation strategy and may not converge to extract the target shape, in contrast with the guaranteed convergence of a global approach. The new technique employing dynamic programming is deployed to extract the inner face boundary, along with a conventional normal-driven technique to extract the outer face boundary. Application to a database of 75 subjects showed that the outer contour was extracted successfully for 96% of the subjects and the inner contour was successful for 82%. The results demonstrated the benefits that could accrue from inclusion of face features, giving an appropriate avenue for future research.
Conference or Workshop Item
||Address: Vienna, Austria
|Venue - Dates:
||IEEE Int. Conf. on Pattern Recognition, Austria, 1996-01-01
||Electronic & Software Systems, Southampton Wireless Group
||29 Oct 2001
||18 Apr 2017 00:24
|Further Information:||Google Scholar|
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