摘要
对重叠指纹的快速分离是实现复杂环境下指纹特征鉴别和识别的关键。传统的重叠指纹分离算法采用指纹特征提取自动匹配技术,需要大量的先验指纹数据库知识才能实现重叠指纹的分离,可操作性不强。提出一种基于纹理特征分形的重叠指纹快速分离技术。构建指纹图像采集系统,指纹图像采集根据嵴与峪的几何特性进行指纹的纹理特征提取,感知指纹的几何特性是指在空间上嵴是突起特征部分,采用指纹增强技术,增强嵴峪对比度,使得图像更加清晰和真实,把重叠指纹的嵴的宽度降为单个像素的宽度,得到嵴线的骨架图像,设计纹理特征分形算法实现重叠指纹的快速分离。仿真结果表明,采用该算法进行指纹分离和识别,性能优越,准确度高,耗时少。
The rapid separation of overlapping fingerprint is the key to realize the complex environment characteristics of fingerprint identification and recognition. The traditional separation of overlapped fingerprints fingerprint feature matching algorithm adopts automatic extraction technology, requires a large amount of prior knowledge in order to achieve separation of overlapping fingerprint database of fingerprints, operability is not strong. A fast separation technology of overlap finger- print texture features based on fractal is presented. Construction of fingerprint image acquisition system, the acquisition of texture feature of fingerprint based on geometric features of ridge and valley of the extraction of fingerprint image, geometric characteristics perceived fingerprint refers to the space on the crest is a prominent feature part, use the fingerprint enhance- ment technology, enhance the ridge Valley contrast, makes the image more clear and true, the overlapped fingerprint ridge width is reduced to a single pixel width, skeleton images obtained ridge, rapid separation design texture fractal algorithm overlapped fingerprint. The simulation results show that, using the algorithm of fingerprint separation and identification, it has superior performance with high accuracy and less time-consuming.
出处
《科技通报》
北大核心
2015年第8期186-188,共3页
Bulletin of Science and Technology
关键词
指纹识别
纹理特征
分形
fingerprint recognition
texture feature
fractal
