论文标题
重新访问掌刻识别竞争性编码方法：线性判别分析观点
Revisiting Competitive Coding Approach for Palmprint Recognition: A Linear Discriminant Analysis Perspective
论文作者
论文摘要
竞争性编码方法（COMPCODE）是掌刻识别的最有前途的方法之一。由于其高性能和简单的配方，它已经不断研究了很多年。然而，尽管已经提出了许多compode的变化，但仍不进行该方法的详细分析。在本文中，我们首次从线性判别分析（LDA）的角度提供了对组件的详细分析。在Fisher标准的意义上，compode是最佳的一个非平凡的足够条件。基于我们的分析，我们检查了棕榈印刷的统计数据，并得出结论，库代码偏离了最佳条件。为了减轻偏差，我们提出了一种新方法，称为“类别compcode”，该方法通过将非palm-line区域排除在匹配中来改善compcode。该方法还应用了竞争代码的非线性映射，以进一步提高准确性。两个公共数据库的实验证明了该方法的有效性。
The competitive Coding approach (CompCode) is one of the most promising methods for palmprint recognition. Due to its high performance and simple formulation, it has been continuously studied for many years. However, although numerous variations of CompCode have been proposed, a detailed analysis of the method is still absent. In this paper, we provide a detailed analysis of CompCode from the perspective of linear discriminant analysis (LDA) for the first time. A non-trivial sufficient condition under which the CompCode is optimal in the sense of Fisher's criterion is presented. Based on our analysis, we examined the statistics of palmprints and concluded that CompCode deviates from the optimal condition. To mitigate the deviation, we propose a new method called Class-Specific CompCode that improves CompCode by excluding non-palm-line areas from matching. A nonlinear mapping of the competitive code is also applied in this method to further enhance accuracy. Experiments on two public databases demonstrate the effectiveness of the proposed method.
