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研究生： 王思淮
Szu-Huai Wang
論文名稱： 以回饋式自動模板生成為基礎 之 正規化關聯值棘波偵測系統 之設計及實現
Spike Detection Based on Normalized Correlation with Automatic Template Generation
指導教授： 黃文吉
Hwang, Wen-Jyi
學位類別： 碩士
Master
系所名稱： 資訊工程學系
Department of Computer Science and Information Engineering
論文出版年： 2014
畢業學年度： 102
語文別： 中文
論文頁數： 55
中文關鍵詞： 棘波排序 、棘波偵測 、FPGA 、Normalized Correlator
論文種類： 學術論文
相關次數： 點閱：304  下載：28 
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    • 本論文提出了全新架構的回饋式棘波偵測演算法，主要是用來偵測一個未知棘波特色的棘波序列。此方法在初始階段使用了Block energy的棘波偵測法則，接著會把初始階段的結果輸出給Osort部份去進行分群並產生模板，最後再利用此模板來進行Matched filter的棘波偵測的動作。

    在偵測的過程中，閥值的訂定一直是我們非常困擾的問題，所以我們嘗試了多種方式來制定出理想的閥值。一開始利用直接定義閥值的方式，給閥值一個訂值，但是此閥值無法適用於各種棘波序列。所以後來利用棘波序列的中間值來自動定義閥值，且在本系統的初始階段中使用它。 同時我們也透過了將棘波序列、模板正規化來簡化系統中閥值的訂定，並提供了一個制訂閥值的依據。

    本論文還對棘波偵測系統進行加速的動作，使其不只在命中率上有更優異的表現，在產能上也能有所提升。最後也有將此棘波分類系統在FPGA上做實現
    更進一步的提升其棘波偵測的效能。

    第一章 緒論 7 1-1 研究背景與動機 7 1-2 研究目的與方法 8 第二章 棘波偵測之研究背景與演算法則 14 2-1 棘波分類的介紹 14 2-2 棘波偵測演算法則 15 2-2-1 Matched filter 15 2-2-2 Block Energy 17 2-2-3 LRT and GLRT tests 19 2-2-4 Normalized Correlator 22 2-2-5 Advance Normalized Correlator 26 2-3 DETECTION SYSTEM 33 第三章 棘波偵測系統架構 35 3-1 BLOCK ENERGY COMPUTATION UNIT 36 3-2 CORRELATOR UNIT 37 第四章 實驗結果與數據探討 38 4-1 加速運算效能實驗 40 4-2 回饋式演算法則的效能評測 42 4-3 不同閥值的偵測效果 46 4-4 不同偵測法則的效果比較 51 4-5 回饋式演算法的分群效果 53 4-6 硬體電路所耗資源 55 第五章 結論 58 REFERENCES 59

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