Abstract: Double line laser 3D scanning system is easy to cause the rough outlines in the point cloud data fusing. This paper proposes a smooth surface based on transverse fitting of discrete points. The average algorithm is applied to smooth the two section points on the curve fitting and followed by selecting two points per-frame on the interval of laser stripe further. It leads the entire laser stripes trim by moving these two points. According to the proposed method of discrete points to reconstruct the 3D model, the experimental results show that the surface smoothness is improved and the reconstruction surface shape model is more close to real surface shape.

Key words: discrete point, curve fitting, 3D model, three-dimensional reconstruction