| 一种基于灰度级相位的指纹图像增强方法 |
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| 引用本文： | 佟喜峰,刘雪梅,李盼池,韩玉祥,尹晓喆,肖红,李鹏飞.一种基于灰度级相位的指纹图像增强方法[J].计算机系统应用,2012,21(6):205-207. |
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| 作者姓名： | 佟喜峰 刘雪梅 李盼池 韩玉祥 尹晓喆 肖红 李鹏飞 |
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| 作者单位： | 1. 东北石油大学,大庆,163318
2. 北京城市学院,北京,100083 |
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| 基金项目： | 黑龙江省教育厅科学技术研究项目 |
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| 摘 要： | 图像增强是指纹识别系统中非常重要的一个步骤。本文提出了灰度级相位的概念,并实现了一个根据灰度级相位增强指纹图像的方法。该方法首先计算指纹区域内每个像素点的灰度级相位,然后对灰度级相位进行滤波,最后根据滤波后的灰度级相位构建指纹图像。测试结果表明该方法对低质量的指纹图像增强效果好。
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| 关 键 词： | 指纹识别 图像增强 灰度级相位 |
| 收稿时间： | 2011/9/14 0:00:00 |
| 修稿时间： | 2011/10/24 0:00:00 |
Fingerprint Image Enhancement Approach Based on Gray-level Phase |
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| TONG Xi-Feng,LIU Xue-Mei,LI Pan-Chi,HAN Yu-Xiang,YIN Xiao-Zhe,XIAO Hong and LI Peng-Fei.Fingerprint Image Enhancement Approach Based on Gray-level Phase[J].Computer Systems& Applications,2012,21(6):205-207. |
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| Authors: | TONG Xi-Feng LIU Xue-Mei LI Pan-Chi HAN Yu-Xiang YIN Xiao-Zhe XIAO Hong and LI Peng-Fei |
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| Affiliation: | 1(Northeast Petroleum University, Daqing 163318, China) 2(Beijing City University, Beijing 100083, China) |
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| Abstract: | Image enhancement is an important procedure in an automatic fingerprint recognition system. An item called gray-level phase is defined, and a gray-level phase based image enhancement approach is proposed. In this approach, gray-level phase of each pixel is obtained firstly; then a filter is designed for gray-level phase; finally, the enhanced image is obtained according to the filtered gray-level phase. The experimental results show that the proposed approach is promising for low quality fingerprint image. |
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| Keywords: | fingerprint recognition image enhancement gray-level phase |
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