基于Delaunay網(wǎng)格和DLP的三維指紋識別系統設計

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基于Delaunay網(wǎng)格和DLP的三維指紋識別系統設計
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作者單位:(杭州職業(yè)技術(shù)學(xué)院 信息工程學(xué)院,杭州 310018)
作者簡(jiǎn)介:許滬敏(1963),女,副教授,碩士,主要從事圖形圖像技術(shù)方向的研究。
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中圖分類(lèi)號:TP391.41
基金項目:浙江省自然科學(xué)基金資助項目(LY13F020006)。

Design for Three Dimension Fingerprint Recognition System Based on Delaunay Grid and DLP

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(Information Engineering Institute, Hangzhou Vocational & Technical College, Hangzhou 310018,China)

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摘要:

針對目前已有的嵌入式指紋識別系統存在的識別精度底和識別效率低的問(wèn)題,設計了一種基于單DLP處理器的嵌入式三維指紋識別系統;首先,以TMS320VC5402為處理器核心,FPS200為圖像采集芯片,EPM7128為外圍邏輯設計了指紋識別系統硬件;然后,設計了基于Delaunay網(wǎng)格的上位機指紋識別軟件,將指紋識別過(guò)程分為細節點(diǎn)DT網(wǎng)格構造、識別參考點(diǎn)獲取、待識別指紋姿勢校正和指紋匹配四個(gè)階段進(jìn)行實(shí)現;最后,采用指紋數據庫FVC2004為測試數據庫在上位機上進(jìn)行仿真,測試結果表明:文中系統能較為精確地實(shí)現指紋識別,平均正確識別率高達98.1%,且與其他方法相比,具有FNMR和FMR值較低、正確識別率高和匹配時(shí)間少的優(yōu)點(diǎn)。

Abstract:

Aiming at the given embed fingerprint recognition system has the defects of low recognition rate and long recognition time, a embed three dimension fingerprint recognition system based on single DSP cup was designed. Firstly, the hardware of the embed fingerprint recognition system was designed, choosing TMS320VC5402 as the CPU, FPS200 as figure capture chip, EPM7128 as the periphery logic. Then the main software constructed in the upper computer, and the recognition for fingerprint was divided to four procedures such as DT grid structure, the obtainment for reference point, posture adjustment and fingerprint match. Finally, the FVC2004 was simulated in the upper computer used as the testing database, the testing result shows the system in this paper can accurately realize fingerprint recognition,the average correct recognition rate was 98.1% and compared with the other methods, it has the low FNMR and FMR, high CR and less matching time. 

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許滬敏,楊森,朱濤.基于Delaunay網(wǎng)格和DLP的三維指紋識別系統設計計算機測量與控制[J].,2014,22(10):3429-3432.

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