Abstract
The need to identify wood by its anatomical features requires a detailed analysis of all the elements that make it up. This is a significant problem of structural wood science, the most general and complete solution of which is yet to be sought. In recent years, increasing attention has been paid to the use of computer vision methods to automate processes such as the detection, identification, and classification of different tissues and different tree species. The more successful use of these methods in wood anatomy requires a more precise and comprehensive definition of the anatomical elements, according to their geometric and topological characteristics. In this article, we conduct a detailed analysis of the limits of variation of the location and grouping of vessels in the observed microscopic samples. The present development offers criteria and quantitative indicators for defining the terms shape, location, and group of wood tissues. It is proposed to differentiate the quantitative indicators of the vessels depending on their geometric and topological characteristics. Thus, with the help of computer vision technics, it will be possible to establish topological characteristics of wood vessels, the extraction of which would be used to develop an algorithm for the automatic classification of tree species.
Highlights
In the second group of vessels, the shape can be defined as an ellipse, with the two mutually perpendicular diameters being different, most often as d2 > d1, with d2 most often oriented in the radial direction (Figure 1b)
Where: Since the total area of the vessels depends more on the environmental conditions than on the tree species, with this indicator, we aim to express the influence of these conditions on the structure of the wood
Initial research has shown that the structure of wood can be successfully classified in a new way that allows the use of quantitative indicators
Summary
Wood consists mainly of three types of tissue—vascular, mechanical, and reserve parenchyma Their ratio and location are genetically set, and they serve to perform their physiological and mechanical functions in the stem [1,2,3,4,5]. The location and quantitative ratio of vascular cells (vessels) are genetically pledged and determine the affiliation of species to the main groups of wood structure. It depends on many factors, but mostly on environmental conditions, the position of these tissues in the stem, the size and age of the stem, and more [1,2,3,4,5]
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