Ключевые слова: abstract, background, bars, black, blue, blur, board, border, building, close, color, concept, cross, dark, defocused, design, dirty, element, empty, gate, grate, gray, grid, grillage, grille, grilled, industrial, iron, lattice, line, metal, metallic, net, old, pattern, perspective, prison, railing, regular, reseau, rusty, sky, space, steel, structure, symbol, texture, wall, web, white,