华中科技大学学报（自然科学版）2025，Vol.53Issue(12)：49-58,10.DOI:10.13245/j.hust.251207
基于改进各向异性扩散滤波的表面形貌分析方法
Surface topography analysis method based on improved anisotropic diffusion filtering
摘要
Abstract
For discontinuous surfaces with multi-hole and multi-scale roughness,traditional filtering methods have limitations of boundary distortion and directional information loss.An improved anisotropic diffusion filtering method was proposed.By modifying the discrete diffusion formula and introducing a boundary detection operator,an eight-directional anisotropic diffusion filtering model was constructed.Based on the traditional four-directional diffusion,this model introduced diagonal neighborhood information,which could solve the problem of ignoring surface information in other directions.By automatically terminating diffusion at boundaries,it effectively overcame the boundary effect.Experimental results show that compared with Gaussian filtering and traditional four-directional diffusion methods,the separation accuracy of form error and waviness of the proposed method is significantly improved.There is no distortion in the boundary area,and the multi-scale errors are separated well.It provides a new approach for the topography analysis of discontinuous surfaces,which has a great importance on realizing manufacturing error tracing and process optimization.关键词
表面形貌/扩散滤波/不连续表面/加工误差/高清晰测量Key words
surface topography/diffusion filtering/discontinuous surfaces/machining error/high-definition metrology分类
机械制造引用本文复制引用
SHAO Yiping,TAO Hailu,XU Zhilong,LU Jiansha,XU Fengcong..基于改进各向异性扩散滤波的表面形貌分析方法[J].华中科技大学学报（自然科学版）,2025,53(12):49-58,10.基金项目
国家自然科学基金资助项目(52405565). （52405565）
