指紋預(yù)處理中的一種新方法
發(fā)布時(shí)間:2019-03-06 18:23
【摘要】:本文提出了一種基于指紋方向圖和直方圖均衡的新方法——塊方向增強(qiáng)法。它將圖像增強(qiáng)中最簡(jiǎn)單的直方圖均衡法和指紋圖像的方向圖結(jié)合起來 ,在合適的圖像塊內(nèi)進(jìn)行方向增強(qiáng) ,能夠快速、有效地去除指紋采集中邊被破壞引入的噪音。仿真結(jié)果表明 ,該方法對(duì)斷點(diǎn)和叉連噪音都有很好的去除作用 ,減少了假特征點(diǎn)的產(chǎn)生 ,從而可以大大提高指紋識(shí)別的速度和準(zhǔn)確性
[Abstract]:In this paper, a new method based on fingerprint pattern and histogram equalization, block direction enhancement method, is proposed. It combines the simplest histogram equalization method in image enhancement with the direction image of fingerprint image, and enhances the direction in the appropriate image block. It can quickly and effectively remove the noise caused by edge destruction in fingerprint acquisition. The simulation results show that the proposed method has a good effect on removing breakpoints and forks and even noise, and reduces the generation of false feature points. Therefore, the speed and accuracy of fingerprint identification can be greatly improved.
【作者單位】: 吉林大學(xué)南嶺校區(qū)信息學(xué)院!長(zhǎng)春130025 吉林大學(xué)南湖校區(qū)計(jì)算機(jī)系!長(zhǎng)春130012 吉林大學(xué)南嶺校區(qū)信息學(xué)院!長(zhǎng)春130025
【分類號(hào)】:D918.91
本文編號(hào):2435790
[Abstract]:In this paper, a new method based on fingerprint pattern and histogram equalization, block direction enhancement method, is proposed. It combines the simplest histogram equalization method in image enhancement with the direction image of fingerprint image, and enhances the direction in the appropriate image block. It can quickly and effectively remove the noise caused by edge destruction in fingerprint acquisition. The simulation results show that the proposed method has a good effect on removing breakpoints and forks and even noise, and reduces the generation of false feature points. Therefore, the speed and accuracy of fingerprint identification can be greatly improved.
【作者單位】: 吉林大學(xué)南嶺校區(qū)信息學(xué)院!長(zhǎng)春130025 吉林大學(xué)南湖校區(qū)計(jì)算機(jī)系!長(zhǎng)春130012 吉林大學(xué)南嶺校區(qū)信息學(xué)院!長(zhǎng)春130025
【分類號(hào)】:D918.91
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