Firstly space transform method was used to transform initial kernel between class scatter matrix and kernel total scatter matrix, so the kernel total scatter matrix became positive definition.
利用空间变换的有关理论，使得变换后的核总体散布矩阵满足非奇异性；
In this paper, the defects of modular 2dpca about computing the total scatter matrix of training samples and selecting eigenvectors are analyzed. An improved modular 2dpca algorithm is presented.
本文分析了模块2dpca在计算训练样本总体散布矩阵和本征向量选取方面的缺陷，提出了一种改进的模块2dpca算法。
First, an uncorrelated projection space is constructed based on the total population scatter matrix.
首先根据总体散布矩阵构造无相关投影空间。
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