Ключевые слова: abstract, age, annual, background, bark, brown, circle, circular, closeup, crack, cross, cut, cutting, forest, growth, industry, life, line, log, lumber, material, natural, nature, oak, old, pattern, pine, plant, purple, ring, round, saw, section, slice, structure, stump, surface, texture, textured, timber, time, tree, trunk, violet, wood, wooden,