Level Set Methods and Fast Marching Methods下载

weixin_39820535 2019-08-03 11:30:30

Level Set Methods and Fast Marching Methods，可用于图像分割等领域。
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Sethian J A. Level set methods and fast marching methods: evolving interfaces in computational geometry, fluid mechanics, computer vision, and materials science[M]. Cambridge university press, 1999.

Tracking moving interfaces in computational geometry, materials sciences, robotics, image processing, and fluid mechanics;

Level Set Methods and Dynamic Implicit Surfaces Contents Preface vii Color Insert (facing page 146) I Implicit Surfaces 1 1 Implicit Functions 3 1.1 Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.3 Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.4 Geometry Toolbox . . . . . . . . . . . . . . . . . . . . . 8 1.5 Calculus Toolbox . . . . . . . . . . . . . . . . . . . . . . 13 2 Signed Distance Functions 17 2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 17 2.2 Distance Functions . . . . . . . . . . . . . . . . . . . . . 17 2.3 Signed Distance Functions . . . . . . . . . . . . . . . . . 18 2.4 Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 2.5 Geometry and Calculus Toolboxes . . . . . . . . . . . . . 21 II Level Set Methods 23 3 Motion in an Externally Generated Velocity Field 25 3.1 Convection . . . . . . . . . . . . . . . . . . . . . . . . . . 25 3.2 Upwind Dierencing . . . . . . . . . . . . . . . . . . . . 29 3.3 Hamilton-Jacobi ENO . . . . . . . . . . . . . . . . . . . 31 3.4 Hamilton-Jacobi WENO . . . . . . . . . . . . . . . . . . 33 3.5 TVD Runge-Kutta . . . . . . . . . . . . . . . . . . . . . 37 4 Motion Involving Mean Curvature 41 4.1 Equation of Motion . . . . . . . . . . . . . . . . . . . . . 41 4.2 Numerical Discretization . . . . . . . . . . . . . . . . . . 44 4.3 Convection-Diusion Equations . . . . . . . . . . . . . . 45 5 Hamilton-Jacobi Equations 47 5.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 47 5.2 Connection with Conservation Laws . . . . . . . . . . . . 48 5.3 Numerical Discretization . . . . . . . . . . . . . . . . . . 49 5.3.1 Lax-Friedrichs Schemes . . . . . . . . . . . . . . . 50 5.3.2 The Roe-Fix Scheme . . . . . . . . . . . . . . . . 52 5.3.3 Godunovs Scheme . . . . . . . . . . . . . . . . . 54 6 Motion in the Normal Direction 55 6.1 The Basic Equation . . . . . . . . . . . . . . . . . . . . . 55 6.2 Numerical Discretization . . . . . . . . . . . . . . . . . . 57 6.3 Adding a Curvature-Dependent Term . . . . . . . . . . . 59 6.4 Adding an External Velocity Field . . . . . . . . . . . . . 59 7 Constructing Signed Distance Functions 63 7.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 63 7.2 Reinitialization . . . . . . . . . . . . . . . . . . . . . . . 64 7.3 Crossing Times . . . . . . . . . . . . . . . . . . . . . . . 65 7.4 The Reinitialization Equation . . . . . . . . . . . . . . . 65 7.5 The Fast Marching Method . . . . . . . . . . . . . . . . 69 8 Extrapolation in the Normal Direction 75 8.1 One-Way Extrapolation . . . . . . . . . . . . . . . . . . . 75 8.2 Two-Way Extrapolation . . . . . . . . . . . . . . . . . . 76 8.3 Fast Marching Method . . . . . . . . . . . . . . . . . . . 76 9 Particle Level Set Method 79 9.1 Eulerian Versus Lagrangian Representations . . . . . . . 79 9.2 Using Particles to Preserve Characteristics . . . . . . . . 82 10 Codimension-Two Objects 87 10.1 Intersecting Two Level Set Functions . . . . . . . . . . . 87 10.2 Modeling Curves in 3 . . . . . . . . . . . . . . . . . . . 87 10.3 Open Curves and Surfaces . . . . . . . . . . . . . . . . . 90 10.4 Geometric Optics in a Phase-Space-Based Level Set Framework . . . . . . . . . . . . . . . . . . . . . . . . 90 …… ……

Abstract. Digital inpainting provides a means for reconstruction of small damaged portions of an image. Although the inpainting basics are straightforward, most inpainting techniques published in the literature are complex to understand and implement. We present here a new algorithm for digital inpainting based on the fast marching method for level set applications. Our algorithm is very simple to implement, fast, and produces nearly identical results to more complex, and usually slower, known methods. Source code is available online.

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