纹理是普遍存在的视觉现象，其可以描述地形、植物、矿石、纤维和皮肤等等物体的表面特征。纹理结构在图像中反映其图像像素取值的空间变化情况，这种变化具有某中统计规律，在纹理区域内的各部分具有大致相同的结构-Visual texture is a common phenomenon, which can describe the terrain, plants, minerals, fiber and skin surface features of objects and so on. Texture in the image reflect the image pixel values of the space changes, this change has a certain statistical regularity in the texture of the various parts of the region have about the same structure