摘要
针对多模态生物特征识别主流集成方法中信息利用不充分的问题,提出利用特征级潜在信息实现得分级集成的思路。挖掘各模态样本的类内聚合度和类间离散度以及模态间相关度等特征级潜在统计信息,将所挖掘的信息利用F-Ratio模型实现集成。实验中将所提方法与当前具有代表性的集成方法进行对比。经实验证明,所提方法在识别准确度上优于同样使用F-Ratio模型,但未利用特征级潜在信息的集成方法,同时优于其他多个具有代表性的集成方法。
Aims at overcoming the insufficient usage of information in the current mainstream fusion methods of multimodal biometrics,the idea of realizing score level fusion by potential information of feature level is proposed. Based on profound analysis, potential statistical information of feature level such as intra-class aggregation and inter-class dispersion of feature samples,correlation among modals is mined and utilized. Fusion is realized by the well theoretical based F-Ratio model. In experiments,the proposed method is compared with currently representative fusion methods.The experimental results indicate that the proposed method advances in recognition accuracy compared with the method of F-Ratio model which is realized without the usage of feature level information,also,is superior to many other representative fusion methods.
引文
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