基于脊骨线特征的指纹图像质量评估方法  

On Approach for Estimating the Quality of Fingerprint Image Based on Character of Ridge and Valley Lines

作　　者：安冯竞 丁红发[1] 程小平[2] 

机构地区：[1]贵州财经大学信息学院,贵阳550025 [2]西南大学计算机与信息科学学院,重庆400715

出　　处：《西南师范大学学报（自然科学版）》2013年第9期106-109,共4页Journal of Southwest China Normal University(Natural Science Edition)

摘　　要：指纹图像的质量对指纹识别技术有着重要的影响.根据指纹的特征和指纹图像的纹理特征,提出了一种基于脊谷线特征的指纹图像质量评估方法.此方法对传统的脊谷线清晰度分析方法进行了改进,把局部分析和全局分析结合起来,得到一个更好的脊谷线清晰度描述.用多指标融合方法来最终判定指纹质量.采用指纹图像脊谷线清晰度、指纹图像有效面积、指纹图像灰度均值和方差作为质量评价的相关指标因数.该方法对指纹质量判定的准确性有了明显改进.The quality of fingerprint image has more important influence on fingerprint identification tech nology. Depend on fingerprint＇s features and fingerprint image＇s texture feature, a method has been dis cussed in this paper for estimating the quality of fingerprint image based on ridge and valley lines. The tra ditional method of analyzing ridge and valley lines has been improved, and this method has been combined the local with the overall to get a better description. With index fusion method to finally determine the quality of fingerprint and the fingerprint image ridge valley line resolution, fingerprint image effective are a, fingerprint image gray mean and variance as a quality evaluation related index factor. The method to judge the quality of the accuracy of fingerprint has obviously been improved.

关 键 词：指纹识别技术 指纹图像 质量评估 脊谷线 清晰度 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]