Texture relates to the frequency of tonal change. Texture may be described by terms such as coarse or fine, smooth or rough, even or uneven, mottled, speckled, granular, linear, woolly, etc. Texture can often be related to terrain surface roughness. Texture is strongly related to the spatial resolution of the sensor used. A pattern on a large-scale image may show as texture on a small-scale image of the same scene.