This paper presents a method for removing geometric noise from triangulated meshes while preserving edges and other intended geometric features. The method iteratively updates the position of each mesh vertex with a position lying on a locally fitted bivariate polynomial. The user selects the width of the vertex neighborhood, the order of the fitted polynomial, and a threshold angle to control the effects of the smoothing operation. To avoid smoothing over discontinuities, the neighborhood can be eroded by removing vertices with normals that deviate beyond a threshold from the estimated median normal of the neighborhood. The method is particularly suitable for use on laser scanner generated meshes of automobile outer body panels. Smoothing methods used on these meshes must allow continuous equilibrium surfaces and must minimize shrinkage. Despite the abundance of existing smoothing schemes, none addresses both of these specific problems. This paper demonstrates the effectiveness of our method with both synthetic and real world examples.
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Technical Papers
Smoothing of Noisy Laser Scanner Generated Meshes Using Polynomial Fitting and Neighborhood Erosion
Miguel Vieira,
Miguel Vieira
The Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213
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Kenji Shimada,
e-mail: shimada@cmu.edu
Kenji Shimada
The Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213
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Tomotake Furuhata
Tomotake Furuhata
The Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213
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Miguel Vieira
The Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213
Kenji Shimada
The Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213
e-mail: shimada@cmu.edu
Tomotake Furuhata
The Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213
Contributed by the Design Automation Committee for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received May 2003; revised October 2003. Associate Editor:
J. Mech. Des. May 2004, 126(3): 495-503 (9 pages)
Published Online: October 1, 2003
Article history
Received:
May 1, 2003
Revised:
October 1, 2003
Citation
Vieira , M., Shimada, K., and Furuhata, T. (October 1, 2003). "Smoothing of Noisy Laser Scanner Generated Meshes Using Polynomial Fitting and Neighborhood Erosion ." ASME. J. Mech. Des. May 2004; 126(3): 495–503. https://doi.org/10.1115/1.1737381
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