基于人类对纹理的视觉感知的心理学的研究，Tamura等人提出了纹理特征的表达。Tamura纹理特征的六个分量对应于心理学角度上纹理特征的六种属性，分别是粗糙度（coarseness）、对比度（contrast）、方向度（directionality）、 线像度（linelikeness）、规整度（regularity）和粗略度（roughness）。其中，前三个分量对于图像检索尤其重要。(Based on the study of human psychology for visual perception of texture, Tamura and others proposed the expression of texture features. Six properties of six components corresponding to Tamura texture features in view of psychology on texture features, respectively, roughness (coarseness) and contrast (contrast), (directionality), the direction of line like degree (linelikeness), regular degree (regularity) and rough degree (roughness). Among them, the first three components are particularly important for image retrieval.)