基于Haar小波变换和分块DCT的人耳识别.pdfVIP

( ) , 45 , 2 , 2009 3 Acta Scientiarum Naturalium Universitatis Pekinensis, Vol.45, No. 2 ( Mar. 2009) 基于Haar 小波变换和分块DCT 的人耳识别 1 1, 2 1 赵海龙 穆志纯 丁文魁 张霞 1 , 100083; 2 , 100871; , Email: mu@ ies. ustb. edu. cn , , , PCALDA , , , ; ; Haar ; ; DCT TP391 Ear Recognition Based on Wavelet Transform and Block DCT 1 1, 2 1 ZHAO Hailong , MU Zhichun , DING Wenkui , ZHANG Xia 1 School of Information Engineering, University of Science and Technology Beijing, Beijing 100083; 2 School of Electronics Engineering and Computer Science, Peking University, Beijing 100871; Corresponding Author, Email: mu@ ies.ustb. edu. cn Abstract A new dimension reduction method was proposed based on twodimension discrete wavelet decomposition and block discrete cosine transform. The new method was compared with the famous PCALDA method which was widely used for feature extraction and dimension reduction in pattern recognition. The experimental results show that the new method could get approximately equal retrieval accuracy to PCALDA method, but it performed better in calculation complexity and speed than the latter . So the proposed method is an effective dimension reduction means for ear recognition. Key words ear recognition; wavelet transform; Haar wavelet; discrete cosine transform; block DCT [ 2] , , , , [ 1] ,