基于神经网络和主元分析的人脸识别算法

Face Recognition Algorithm Based on Neural Network and Principal Component Analysis

针对高维、小样本的分类问题,提出2个重要的准则,用于估计RBF单元的初始宽度。采用主成分分析方法把训练样本集投影到特征脸空间,以减少维数,用Fisher线性判别式产生一组最具判别性的特征,使不同类间的训练数据尽可能地分开,而同一类的样本尽可能地靠近。实验结果证明,该算法在分类的错误率及学习的效率上都表现出较好的性能。

According to the high dimension,small sample classification problem,this paper puts forward two important criterions to estimate the initial width of RBF unit.Principal Component Analysis（PCA） method used the training sample set is projected onto the eigenface space,in order to reduce the dimensionality,using Fisher linear discriminant to generate a group of the most discriminant features,different classes of the training data can be separated as much as possible,and the same samples are as close as possible.The results prove that this algorithm both in the classification error rate or in the learning efficiency can show excellent performance.