Ключевые слова: abstract, background, bark, chainsaw, common walnut, countryside, crack, cracked, crosssection, cut, deciduous tree, english walnut, fruit tree, growth rings, hardwood tree, log, nature, outdoors, pattern, persian walnut, plant, rural, sawdust, stack, stump, surface, texture, timber, timber harvesting, trace, transverse, tree, trunk, walnut, wood, wood fibers, wood knot,