Dynamically Constrained Vector Field Convolution for Active Contour Model

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概要

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• Vector field convolution (VFC) provides a successful external force for an active contour model. However, it fails to extract the complex geometries, especially the deep concavity when the initial contour is set outside the object or the concave region. In this letter, dynamically constrained vector field convolution (DCVFC) external force is proposed to solve this problem. In DCVFC, the indicator function with respect to the evolving contour is introduced to restrain the correlation of external forces generated by different edges, and the forces dynamically generated by complex concave edges gradually make the contour move to the object. On the other hand, traditional vector field, a component of the proposed DCVFC, makes the evolving contour stop at the object boundary. The connections between VFC and DCVFC are also analyzed. DCVFC maintains desirable properties of VFC, such as robustness to initialization. Experimental results demonstrate that DCVFC snake provides a much better segmentation than VFC snake.

著者

• XIE Shengli

  School of Electronic and Information Engineering, South China University of Technology

• ZHOU Zhiheng

  School of Electronic and Information Engineering, South China University of Technology

• LIU Guoqi

  School of Electronic and Information Engineering, South China University of Technology

• WU Dongcheng

  School of Electronic and Information Engineering, South China University of Technology

関連論文

• Dynamically Constrained Vector Field Convolution for Active Contour Model

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