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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/35712

    Title: 模糊聚類流向法之指紋辨識系統設計
    Other Titles: Fingerprint recognition system design via fuzzy cluster orientation method
    Authors: 許臣君;Hsu, Chen-chun
    Contributors: 淡江大學電機工程學系碩士班
    黃聰亮;Huang, Tsong-liang
    Keywords: 模糊;聚類;指紋;辨識;辨認;Fuzzy;Cluster;Fingerprint;Recognition;Identification
    Date: 2007
    Issue Date: 2010-01-11 07:02:54 (UTC+8)
    Abstract: 近年來,在這多元化的社會中,人們生活方式也越來越複雜,在很多情況下,安全保密以及身分辨識是ㄧ項相當重要的課題。早期是使用密碼和鑰匙來當作個人的保密工具,印章和簽名來當作身分辨識,但是這類的工具存在著不方便性、易遺失、遺忘、盜用等問題因素。
    Now, people’s life are getting more and more complicated in this diversified society. In many situations, keeping secret safely and identifying recognition are quite important. In early days, people kept secret by using secret code and keys and recognized identifications by seals and signatures. But these ways are inconvenient and easily lost, forgotten and stolen.
    Because the characters of human bodies can not be copied, scientists have explored the possibility of biological characteristics as a personal identification tool. In the field of Biometric recognitions, fingerprints because of their own uniqueness and invariance which have very high reliability. And it has widely used in protection systems because of the advantage of the lower development cost.
    Most identification methods depend on the locations and numbers of ridge endings and bifurcations. If we can get the fingerprint flow field exactly, it will be easy to find out the minutiae and singular points. As the result, there are many scholars propose many ways to calculate flow. The ways mostly used are Slite-Sum methods proposed by Stock and Swonger. The fingerprint flow is got by using gradient.
    Most of the fingerprint verification systems would including normalization, noise filter, calculate fingerprint flow direction, Gabor filter, detect the positions of the singular points and minutiae, as a basis for the later verification. But, if we have a huge database of fingerprint, the whole efficiency of compare is the most frequently denounced, therefore, here is a new fingerprint flow algorithm bring up in this thesis to compute the fingerprint flow field, for the purpose of selecting fingerprint core more accurate and correcting the offset and rotation of the fingerprint, in the end, use the membership grade by calculate flow field to set up file or use the compute of Euclidean distance to build up the compare of the fingerprint database, that will promote the accuracy by a wide margin and accomplish the efficiency and the accuracy in the hardware of the fingerprint identification in the future.
    Appears in Collections:[電機工程學系暨研究所] 學位論文

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