In order to solve the problem, this paper put forward an improved mesh simplification algorithm based on quadric error metrics.
为了解决这个问题，本文作者提出一种改进的基于二次误差测度的网格简化算法。
2
In this paper, the fifing method which stimulates the Geoid using quadric polynomial, BP network and RBF network are provided for the GPS height conversion.
本文采用二次曲面拟合、BP网络和RBF网络进行了GPS高程转换，并在网络结构改进等方面作了分析。
3
In order to effectively combine the two schemes, uses quadric error matrix to transform related information between the two steps in the whole process.