Snake for Band Edge Extraction and Its Applications

A novel snake model suitable for edge extraction of bandshape objects is presented in this paper. Based on the proposed model, an edge tracking system, EdgeTrak, has been developed which is being used by speech scientists in speech research and other related applications. Unlike the classical active contour models which only use gradient of the image as the image force, the proposed snake model incorporates the edge gradient and intensity information in specific regions around each snake element. It can be used to extract edges that are open or closed contours, which makes it different from other active contour models that use homogeneity of intensity in a region as the constraint and thus are only applied to closed contours. The proposed snake model also takes into account the contour orientation so that any unrelated edges in the image will be discarded even if these edges have high gradient, or enclose a homogeneous region. Dynamic programming is used as the optimization method in...

• Type: Conference
• Year: 2003
• Where: CGIM
• Authors: Min Li, Chandra Kambhamettu, Maureen C. Stone
• Keywords: Active Contour Models, CGIM 2003, Computer Graphics, Edge, Snake Model