Ключевые слова: asphalt, bias, black, clean, color, compass, concrete, construction, crack, dirty, floor, gray, ground, highway, horizontal, lane, layer, lean, level, line, new, nook, notice, outline, paint, parallel, park, pebble, public, road, sand, sign, single, skin, slanted, stained, street, surface, symbol, texture, town, traffic, transport, urban, vertical, white,