Implementation of the 3D Alpha-Shape for the Reconstruction of 3D Sets from a Point Cloud

Implementation in R of the alpha-shape of a finite set of points in the three-dimensional space. The alpha-shape generalizes the convex hull and allows to recover the shape of non-convex and even non-connected sets in 3D, given a random sample of points taken into it. Besides the computation of the alpha-shape, this package provides users with functions to compute the volume of the alpha-shape, identify the connected components and facilitate the three-dimensional graphical visualization of the estimated set.


The package alphashape3d presents the implementation in R of the alpha-shape of a finite set of points in the three-dimensional space. This geometric structure generalizes the convex hull and allows to recover the shape of non-convex and even non-connected sets in 3D, given a random sample of points taken into it. Besides the computation of the alpha-shape, the package alphashape3d provides users with functions to compute the volume of the alpha-shape, identify the connected components and facilitate the three-dimensional graphical visualization of the estimated set.

To install:

  • the latest released version from CRAN: install.packages("alphashape3d")
  • the latest development version without vignette: install_github("alphashape3d","tlafarge",build_vignettes = FALSE) (require "devtools")
  • the latest development version: install_github("alphashape3d","tlafarge") (require "devtools")

Authors:

License:

  • GPL-2

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Reference manual

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install.packages("alphashape3d")

1.3 by Beatriz Pateiro-Lopez, 2 years ago


Browse source code at https://github.com/cran/alphashape3d


Authors: Thomas Lafarge , Beatriz Pateiro-Lopez


Documentation:   PDF Manual  


GPL-2 license


Depends on geometry, rgl

Suggests alphahull


Suggested by nat, rgl.


See at CRAN