Introduction to Digital Image Processing

TEXTURE CHARACTERIZATION 489

textural region by some form of image segmentation before attempting texture

measurements.

Texture may be classified as being artificial, natural or stochastic. Artificial

textures consist of arrangements of symbols, such as line segments, dots and stars

placed against a neutral background. Several examples of artificial texture are

presented in Figure 15.4-1 (9). As the name implies, natural textures are images

of natural scenes containing semi-repetitive arrangements of pixels. Examples

include photographs of brick walls, terrazzo tile, sand and grass. Brodatz (11)

has published an album of photographs of naturally occurring ...