papaya2: 2D Irreducible Minkowski Tensor computation

Abstract

A common challenge in scientific and technical domains is the quantitative description of geometries and shapes, e.g. in the analysis of microscope imagery or astronomical observation data. Frequently, it is desirable to go beyond scalar shape metrics such as porosity and surface to volume ratios because the samples are anisotropic or because direction-dependent quantities such as conductances or elasticity are of interest. Minkowski Tensors are a systematic family of versatile and robust higher-order shape descriptors that allow for shape characterization of arbitrary order and promise a path to systematic structure-function relationships for direction-dependent properties. Papaya2 is a software to calculate 2D higher-order shape metrics with a library interface, support for Irreducible Minkowski Tensors and interpolated marching squares. Extensions to Matlab, JavaScript and Python are provided as well. While the tensor of inertia is computed by many tools, we are not aware of other open-source software which provides higher-rank shape characterization in 2D.

5 pages, 3 figures, published in the Journal of Open Source Software, code available at https://morphometry.org/software/papaya2/

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• Non-universal Voronoi cell shapes in amorphous ellipsoid packings
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Cited by in corpus (5)

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• Minkowski Tensors in Redshift Space -- Beyond the Plane Parallel Approximation
• Controlling the dewetting morphologies of thin liquid films by switchable substrates
• Constraining cosmology with thermal Sunyaev-Zel'dovich maps: Minkowski functionals, peaks, minima, and moments
• Morphometry on the sphere: Cartesian and irreducible Minkowski tensors explained and implemented