北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2000, Vol. 23 ›› Issue (2): 5-9.

• 学术论文 • 上一篇    下一篇

基于分形模型的指纹图像中心三角区域的检测

苏菲,孙景鳌,蔡安妮   

  1. 北京邮电大学电信工程学院,北京 100876
  • 收稿日期:1999-11-10 出版日期:2000-03-10
  • 作者简介:苏菲(1973-),女,山东宜都人,博士生.

Detection of Core and Delta Fields Using an Improved Fractal Method

SU Fei, SUN Jing-ao, CAI An-ni   

  1. School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876,China
  • Received:1999-11-10 Online:2000-03-10

摘要: 提出了基于离散分形布朗运动的指纹图像模型表示指纹图像数据,并给出了一种利用模型的分形参数构成判别器的方法来粗找中心、三角区域.实验结果表明该方法弥补了以往仅用单一维数不足以描述纹理图像的缺陷,同时弥补了传统方法在确定指纹中心、三角区域时对噪声敏感的不足.

关键词: 特征提取, 离散分形布朗运动, 分形维数, 纹理图像

Abstract: A new technique that uses Discrete Fractal Brownian Motion to describe a fingerprint is presented. By computing certain fractal parameters, a fingerprint's core and delta fields can be roughly detected. Experimental results demonstrate this method to be not only more efficient than the single fractal dimension method, but also more noise resistant than the traditional schemes.

Key words: feature extraction, discrete fractal Brownian motion, fractal dimension, texture image

中图分类号: