中文摘要：

表面形貌是影响表面功能的主要因素，其中包含形状误差、波纹度、粗糙度等多种成分。方向特征是机械加工表面中的常见特征，如何有效的将其分离出来直接关系到表面质爨的评定。基于Radon变换对方向特征的敏感性，结合样条小波对方向特征的提取和对噪声的抑制作用，在拟合表面和实测表面分别实验，得到表面线性方向特征的有效提取。

英文摘要：

Surface topography is the main factor that affects surface function, including surface embrace form, waviness, roughness and other ingredients. Directional texture is common phenomenon in mechanical surface. Extraction of the texture directly affects the result of surface evaluation. Based on sensitivity of radon transform to directional texture, and spline wavelet can extracts the texture and suppress the noise. The simulated and measured surface are tested, the surface directional texture are effectively extracted.