主成分分析(principal component analysis:PCA)已成功用于人脸识别,但基于主成分分析的人脸识别方法需要将图像数据向量化,而向量化后的图像样本维数非常大,计算代价非常高.二维主成分分析(2 dimension principal component analysis:2DPCA)直接处理图像数据,不需要向量化的过程,2DPCA降低了计算复杂度,但是2DPCA与PCA相比,需要存储更多的系数,即要占用更多的存储空间.本文提出了一种基于小波变换和2DPCA的人脸识别方法,可以克服上述缺点,实验结果证明了该方法的有效性.
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