“…Intervisibility: high (more than 50%), average (25-50%), low (less than 25%)Visual components[13,14] I Color: nuance or dye stuff, saturation or tone (light or dark) and brilliance (bright or matt)I Texture: grain (fine or thick), density (dense or scattered) I Shape: type (two-dimensional or three-dimensional), geometry (regular or irregular) I Line: definition (continued or discontinued), complexity (undulating, crooked, or straight), orientation: (horizontal, vertical, or sloping) I Lighting: frontal, lateral and rear.Physical components[4][5][6]10,14,20,21,42,99,100] …”