计算机图形学Lecture04-Surface ReconstructionSurvey

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2025-01-13 0 0 3.52MB 32 页 5.9玖币
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Surface Recostruction From
Point Clouds
Advanced Computer Graphics
CS/Beihang University
Geometry
processing
Motivation
etc.
Surface
reconstruction
Problem Statement
Given: points Psampled from
unknown surface U
Goal: reconstruct a surface Sapproximating U
accurate (w.r.t. P, and U!)
concise
3
Surface
Reconstruction
Algorithm
Why is this difficult?
4
Points P
unorganized
noisy
Surface S
arbitrary, unknown topological type
sharp features
Algorithm must infer
topology, geometry, and sharp features
Reconstruction Methods
Computational Geometry
Surface Fitting
Implicit Function Fitting
5
Computational Geometry
Voronoi Diagrams, Delaunay Triangulations and
Alpha Shapes
6
Convex Hull
Voronoi Diagram
Delaunay
Triangluation
Alpha Shapes
Ball Pivoting
7
Fausto Bernardini , Joshua Mittleman , Holly Rushmeier , Claudio Silva , Gabriel
Taubin. The Ball-Pivoting Algorithm for Surface Reconstruction. IEEE
Transactions on Visualization and Computer Graphics, 1999.
摘要:

SurfaceRecostructionFromPointCloudsAdvancedComputerGraphicsCS/BeihangUniversityGeometryprocessingMotivationetc.SurfacereconstructionProblemStatementGiven:pointsPsampledfromunknownsurfaceUGoal:reconstructasurfaceSapproximatingU–accurate(w.r.t.P,andU!)–concise3SurfaceReconstructionAlgorithmWhyisthisdi...

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