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| A 2D+3D Multimodal Ear Recognition Method |
| YUAN Li,MU Zhi-Chun |
| School of Automation and Electrical Engineering,University of Science and Technology Beijing,Beijing 100083 |
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Abstract A 2D+3D multimodal ear recognition method is proposed. Firstly,ear detection method based on Adaboost algorithm is used to detect ear part on the 2D images,then the corresponding ear part is located and extracted in the 3D range image. For 2D ear recognition,Kernel Fisher Discriminant Analysis is applied for feature extraction and Nearest Neighbor classifier is applied for ear recognition. For 3D ear recognition,3D Local Binary Pattern descriptor is applied for feature extraction on range image,geometric constraint and location constraint are used to perform the matching process between a test ear and a registered protocol ear,and ear recognition performance is evaluated by the number of the matching points. Finally,Bayes decision rule is used for the decision level fusion of 2D and 3D ear recognition classifiers. The experimental results on the UND ear dataset show the effectiveness of the proposed method. In lighting variation scenario,the proposed 2D+3D fusion method outperforms unimodal ear recognition method with 2D images or range images.
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Received: 26 October 2012
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图5 核Fisher鉴别分析算法流程图
Fig.5 Diagram of the Kernel Fisher Discriminant Analysis algorithm |
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2013, Vol. 26 
