关键词: 曲面去噪, 整体曲率, 变分水平集, 半点差分

Abstract: A model based on total curvature and variational level set methods is proposed for surface denoising.It is the natural analogue of total variation based on ROF model for image denoising in geometry processing.The model based on the implicit variational level set methods can handle topological changes automatically.By evolving the gradient decent equation，the optimal solution is obtained.The half-point differencing method is used to get more accurate results.Experimental results show that the model removes noise efficiently and preserves salient features of the surface.

Key words: surface denoising, total curvature, variational level set, half-point differencing