关键词: 自由曲面 高斯图 最小闭域

Abstract:

One of the key algorithms of the free-form surface shape analysis and control is the decomposition of the Gauss map into homogeneous areas. This paper  presents a new free-form surface Gauss map decomposition algorithm, which imports the second order derivate to improve the existing Gauss map＇s exteri  ior boundary computation method, and implements the minimal closed field cut of the complete Gauss map. The theoretical analysis and experimental result s both identify its feasibility and better robustness.

Key words: （free-form surface, Gauss map, mini-closed field）