Verification of Geometric Model-Based Plant Phenotyping Methods for Studies of Xerophytic Plants

Abstract

This paper presents the results of verification of certain non-contact measurement methods of plant scanning to estimate morphological parameters such as length, width, area, volume of leaves and/or stems on the basis of computer models. The best results in reproducing the shape of scanned objects up to 50 cm in height were obtained with the structured-light DAVID Laserscanner. The optimal triangle mesh resolution for scanned surfaces was determined with the measurement error taken into account. The research suggests that measuring morphological parameters from computer models can supplement or even replace phenotyping with classic methods. Calculating precise values of area and volume makes determination of the S/V (surface/volume) ratio for cacti and other succulents possible, whereas for classic methods the result is an approximation only. In addition, the possibility of scanning and measuring plant species which differ in morphology was investigated.

Code and data availability

The paper describes 3D scanning of nine xerophytic plant specimens and author-developed software (VTK-based, plus a Matlab tool from a Master's thesis), but no public phenotype dataset, image/model deposit, or author code repository with availability language or URL is provided. All listed URLs are vendor/reference or

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