Ключевые слова: abstract, age, background, biometric, circle, circular, contour, curl, curve, different, drawn, fingeprint, finger, flow, gradation, graphic, growth, handdrawn, human, illustration, imprint, line, linear, map, material, organic, outline, relief, ring, ripple, rough, round, set, shape, simple, smooth, striped, style, symbol, texture, topographic, tree, various, wallpaper, wave, waveform, web, wood, wooden,