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Communication Dans Un Congrès Année : 2021

New Elastica Geodesic Approach with Convexity Shape Prior for Region-based Active Contours and Image Segmentation

Résumé

The minimal geodesic models based on the Eikonal equations are capable of finding suitable solutions in various image segmentation scenarios. Currently, existing geodesic-based segmentation approaches usually exploit the image features in conjunction with regularization terms, such as curve length, for computing geodesic paths. In this paper, we consider a more complicated problem: finding simple closed geodesic curves which are imposed a convexity shape prior. The proposed approach relies on an orientation-lifting strategy, by which a planar curve can be mapped to an high-dimensional orientation space. The convexity shape priors serve as a constraint for the construction of local metrics in the lifted space. The geodesic curves then can be efficiently computed through the single-pass Fast Marching method (FMM). In addition, we introduce a way to incorporate region-based homogeneity features into the proposed geodesic model so as to solve the region-based segmentation issues with shape prior constraints.
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Dates et versions

hal-03174123 , version 1 (18-03-2021)
hal-03174123 , version 2 (09-11-2021)

Identifiants

  • HAL Id : hal-03174123 , version 2

Citer

Da Chen, Laurent Cohen, Jean-Marie Mirebeau, Xue-Cheng Tai. New Elastica Geodesic Approach with Convexity Shape Prior for Region-based Active Contours and Image Segmentation. ICCV 21, International Conference on Computer VIsion, IEEE, Oct 2021, Virtual, Montreal, Canada. ⟨hal-03174123v2⟩
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