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題 名 | 基於樣板比對之指紋刷取式辨識系統=Verification System of Sweeping Fingerprint Base on Template Matching |
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作 者 | 黃文增; 余信緯; 陳武煜; 沈毅偉; | 書刊名 | 臺北科技大學學報 |
卷 期 | 39:1 民95.03 |
頁 次 | 頁55-70 |
分類號 | 312.84 |
關鍵詞 | 條狀指紋感測器; 快速正規相關係數法; 樣板比對; DP比對; 門檻值; GDS; Line sensor; FNCC; Template matching; DP matching; Threshold; |
語 文 | 中文(Chinese) |
中文摘要 | 隨著科技的發達,在現今資訊化的社會當中,人們在日常生活上都時常接觸到一些科技產品,相對的科技產品使用的越多,雖然會帶來方便,但是在享受科技便捷的同時,個人的資料、密碼與其安全性就突顯地相當重要。目前市面上,有許多電子相關產品都有結合指紋辨識的系統,以此作為安全性的防護。指紋感測器分為塊狀感測器與條狀感測器兩種,而我們選擇了日本富士通研發的條狀指紋感測器MBF-310,它與塊狀感測器不同,有低功率、小面積、低價格的優勢,對於講究低價格低功率的系統來說,這種感測器完全符合這樣的條件。 由於使用條狀感測器,感測時使用者是使用刷取的方式,所以擷取到影像要經過重組才會是完整的指紋影像。而刷取時會有速度快慢、壓的力道大小等問題,必須利用後端的演算法來加以做修正、做處理,以避免這些問題來影響辨識結果。本文使用FNCC重組演算法來重組指紋,FNCC全名為快速正規相關係數法。 重建完後,將完整的指紋圖像做柱狀圖平均法、高斯濾波器、圖像壓縮、取GDS等等,將GDS 的資料作DP比對。GDS全名為群延遲頻譜分析,對於畫像的濃淡、模糊、中斷、等雜訊,皆不易受其影響。動態路徑規畫是最佳路徑搜尋的一種方式,會計算出兩張圖像的差異程度,以此值來評定是否辨識成功。 |
英文摘要 | Along with science and technology of flourishing, among the society that the information of the nowadays, the people all often come in contact with some science and technology products on the daily life, opposite science and technology product usage is more, although will bring the convenience, at the same time of enjoying science and technology convenience, personal data, password and safety bring into relief the ground rather important. Currently on the market, there are many products with related electronic and all having already combined the fingerprint recognizes system, with this protection that is the safety. The fingerprint sensor is divided into a piece of sensor and a line sensor, and we chose a line fingerprint sensor MBF-310 of the Japanese Fujitsu a development, it different from the sensor, there is the advantage of the low power, small area, low cost, for pay attention to low cost and low power the system, this kind of sensor matches completely thus of condition. Because using a line sensor, the user is the way that the usage sweep to take, therefore picks up to the image must through the reorganization be able to be the complete fingerprint image. The sweep while speed rate and presses strength problem, must to use of the algorithm to do the correction and do the processing, and avoid these problems to influence to recognize the result. This article uses the FNCC reorganization to develop the algorithm to reorganize. After reconstruction is over, do the fingerprint picture of the Histogram equalization, Gauss filter, picture compression, and the GDS, make GDS data the DP matching. The GDS full name (the Group Delay Spectrum), this kind of frequency analysis has the result that personal frequency peak value enhances, for the fingerprint picture of the thick and thin, misty, interruption and noise, these are not easily influenced by it. The dynamic programming (DP) is a kind of method of the best path search, can figures out two images the difference degrees, assessing with this value whether recognize the success. |
本系統中英文摘要資訊取自各篇刊載內容。