Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (31): 180-182.DOI: 10.3778/j.issn.1002-8331.2009.31.054

• 图形、图像、模式识别 • Previous Articles     Next Articles

Fingerprint image enhancement method based on anisotropic tensor reverse diffusion

SU Yong-li,ZHANG Bo,ZHANG Shu-ling   

  1. Department of Mathematics,Northwest University,Xi’an 710069,China
  • Received:2008-06-17 Revised:2008-09-19 Online:2009-11-01 Published:2009-11-01
  • Contact: SU Yong-li

各向异性张量逆扩散指纹图像增强方法

苏永利,张 博,张书玲   

  1. 西北大学 数学系,西安 710069
  • 通讯作者: 苏永利

Abstract: This paper gives an image enhancement method based on anisotropic tensor reverse diffusion from heat diffusion function.This method filters the fingerprint image,at the same time not only protect the fingerprint ridge,but enhance it.Experimental results show that this method has the effect of enhance edge compared with traditional method,such as medium filtering and Gaussian filtering,more suitable for dense texture image processing.

Key words: tensor diffusion, anisotropic, reverse diffusion, fingerprint, image enhancement

摘要: 由热扩散方程给出了一种基于张量扩散的各向异性逆扩散图像增强方法。该方法在对指纹图像滤波的同时,不仅保护了指纹的纹线,而且增强了纹线。实验结果表明该方法比传统的中值滤波、高斯滤波具有增强边缘的效果,更适合纹理密集的指纹图像的处理。

关键词: 张量扩散, 各向异性, 逆扩散, 指纹, 图像增强

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