Statistical Analysis and Modeling of the Geometry and Topology of Plant Roots

05/16/2019
by   Guan Wang, et al.
0

Root is an important organ of a plant since it is responsible for water and nutrient uptake. Analyzing and modelling variabilities in the geometry and topology of roots can help in assessing the plant's health, understanding its growth patterns, and modeling relations between plant species and between plants and their environment. In this article, we develop a framework for the statistical analysis and modeling of the geometry and topology of plant roots. We represent root structures as points in a tree-shape space equipped with a metric that quantifies geometric and topological differences between pairs of roots. We then use these building blocks to compute geodesics, optimal deformations under the metric, between root structures, and to perform statistical analysis of a population of roots. We demonstrate the utility of the proposed framework on a dataset of wheat roots grown in different environmental conditions. We will also show that the framework can be used in various applications including classification and symmetry analysis.

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