<computer graphics> A measure of the variation of the intensity of a surface, quantifying properties such as smoothness, coarseness and regularity. It's often used as a region descriptor in image analysis and computer vision.

The three principal approaches used to describe texture are statistical, structural and spectral. Statistical techniques characterise texture by the statistical properties of the grey levels of the points comprising a surface. Typically, these properties are computed from the grey level histogram or grey level cooccurrence matrix of the surface.

Structural techniques characterise texture as being composed of simple primitives called "texels" (texture elements), that are regularly arranged on a surface according to some rules. These rules are formally defined by grammars of various types.

Spectral techiques are based on properties of the Fourier spectrum and describe global periodicity of the grey levels of a surface by identifying high energy peaks in the spectrum.

(01 Mar 1995)

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1. The act or art of weaving.

2. That which woven; a woven fabric; a web. "Others, apart far in the grassy dale, Or roughening waste, their humble texture weave." (Thomson)

3. The disposition or connection of threads, filaments, or other slender bodies, interwoven; as, the texture of cloth or of a spider's web.

4. The disposition of the several parts of any body in connection with each other, or the manner in which the constituent parts are united; structure; as, the texture of earthy substances or minerals; the texture of a plant or a bone; the texture of paper; a loose or compact texture.

5. <biology> A tissue. See Tissue.

Origin: L. Textura, fr. Texere, textum, to weave: cf. F. Texture. See Text.

(01 Mar 1998)

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