基于不同小波基函数的多层小波变换掌纹识别方法研究
Palmprint identification method studying using multilayer wavelet transformation based on different wavelet basis functions
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摘要: 利用手掌的几何轮廓对掌纹图像进行预处理,分割得到感兴趣区域(ROI).基于不同的小波基函数,对掌纹图像分别进行多层小波变换,进而提取不同小波下的能量特征.通过计算不同基函数、不同层次下小波能量特征的识别率,得出不同小波基识别能力的强弱.实验表明,与以往算法相比,本方法具有较好的识别效果.Abstract: The palmprint image is preprocessed and divided the region of interesting (ROI) by the geometric profile of a palm.Then,basing on different wavelet basis functions,the ROI is transformed by the multilayer wavelet transformation respectively,and these different wavelet energy features are extracted later.The recognition ability of different wavelet basis functions is obtained by calculating the recognition rate under different wavelet basis functions and different levels of transformation.Comparing with previous algorithms,the experimental results show that this method has better recognition effect.
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