摘要： 根据指纹图像的特征提出了合理的假设,并根据假设提出了增强指纹图像对比度的算法、提取指纹有效区域的算法、根据方向信息分割图像的算法以及去除图像中气泡噪声的算法,这些算法处理的效果好、运行速度快、编程简单,有效地解决了指纹图像的预处理问题。

关键词: 指纹, 分割, 方向图, 噪声

Abstract: This article brings forward some suitable supposition based on the characteristic of fingerprint image and puts forward arithmetic of enhancing contrast ratio of fingerprint image, arithmetic of refining the effective area of fingerprint image, arithmetic of segment image based on the direction information, and arithmetic of getting rid of the air bubble noise in image. These arithmetics have good process result and run faster and easily to be programmed, which has effectively solved the problem of fingerprint image's pre-process.

中图分类号: 

• TP391.41