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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/35706

    Title: 利用改良式極座標比對法之指紋辨識晶片設計
    Other Titles: Fingerprint recognition chip design based on the improved polar representation scheme
    Authors: 林睿鵬;Lin, Jui-peng
    Contributors: 淡江大學電機工程學系碩士班
    黃聰亮;Huang, Tsong-liang
    Date: 2005
    Issue Date: 2010-01-11 07:02:31 (UTC+8)
    Abstract: 傳統上,我們常用密碼來限制保全系統的存取權。然而當密碼外洩時,保全系統將會輕易的被破解。隨著科技的進步,生物特徵被用來改善這個系統保密的問題。在生物特徵辨識的領域中,指紋因為本身的唯一性和不變性而具有相當高的可靠度。此外,指紋辨識系統開發成本較低、使用方便等種種優越之處使得它已被廣泛的運用在資料保全系統上。
    Traditionally, passwords have used to restrict access to secure system. However, security can be easily discredited in these systems when a password is leaked to an unauthorized user. With the growth of technology, biometric features are used to solve the problems in traditional identification system. In the field of biometric identification, fingerprints have one of the highest levels of reliability because of the uniqueness and invariability. Besides, fingerprint identification systems are also cost-effective, convenient and have been extensively used in data security systems.
    Most identification methods are dependent on the locations and numbers of ridge endings and bifurcations. The extracted fingerprint impressions usually have translation and rotation in different times which cause the coordinates of minutiae change. In order to align the position variance, the minutiae information is rotated a constant angle in several times and calculate the Euclidean Distance between query and database information. This method is inefficient and the accuracy needs to be improved.
    In this thesis, we propose a novel matching scheme to improve the efficiency of matching. After the pre-processing steps, the minutiae are extracted. We use the relation of minutiae as the information to identify fingerprint impressions. When the algorithm is simulated successfully, we implement it to build an automatic fingerprint identification system via a Nios embedded processor.
    Appears in Collections:[電機工程學系暨研究所] 學位論文

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