Ключевые слова: abstract, aging, background, bark, brown, burning, cellulose, circle, close, closeup, concentric, construction, cracked, cross, cut, fir, forest, frame, history, industry, knot, life, log, material, nature, nobody, object, old, pattern, pine, process, ring, rings, rough, saw, section, shape, single, surface, texture, textured, timber, tree, trees, trunk, up, weathered, wood, wooden, years,