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Convergence results for critical points of the one-dimensional Ambrosio-Tortorelli functional with fidelity term. (English) Zbl 1190.49048

Summary: We show that critical points of the one-dimensional Ambrosio-Tortorelli functional with fidelity term converge to those of the corresponding Mumford-Shah functional, a famous model for image segmentation. Equipartition and convergence of the energy-density are also derived.

MSC:

49Q20 Variational problems in a geometric measure-theoretic setting
49J45 Methods involving semicontinuity and convergence; relaxation
35B38 Critical points of functionals in context of PDEs (e.g., energy functionals)
35J60 Nonlinear elliptic equations
94A08 Image processing (compression, reconstruction, etc.) in information and communication theory