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Modified level set method with Canny operator for image noise removal

By P C Wen, X J Wang and Hong Wei

Abstract

The level set method is commonly used to address image noise removal. Existing studies concentrate mainly on determining the speed function of the evolution equation. Based on the idea of a Canny operator, this letter introduces a new method of controlling the level set evolution, in which the edge strength is taken into account in choosing curvature flows for the speed function and the normal to edge direction is used to orient the diffusion of the moving interface. The addition of an energy term to penalize the irregularity allows for better preservation of local edge information. In contrast with previous Canny-based level set methods that usually adopt a two-stage framework, the proposed algorithm can execute all the above operations in one process during noise removal

Publisher: Optics Infobase
Year: 2010
DOI identifier: 10.3788/col20100812.1127
OAI identifier: oai:centaur.reading.ac.uk:17372
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