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研究生： 賴正倫
Cheng Lun Lai
論文名稱： 以區域生長與形態學方式來估計大鼠聲門面積之研究
Estimating rat glottal area by region growing and morphology
指導教授： 吳順德
Wu, Shuen-De
學位類別： 碩士
Master
系所名稱： 機電工程學系
Department of Mechatronic Engineering
論文出版年： 2010
畢業學年度： 98
語文別： 中文
論文頁數： 65
中文關鍵詞： 聲門 、區域生長 、形態學
英文關鍵詞： Glottal area, Region-growing, Morphology
論文種類： 學術論文
相關次數： 點閱：176  下載：5 
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    • 聲門動態變化在喉生理學研究不論是在人類聲門或動物聲門上都是相
    當重要的課題。本研究是採用大鼠聲門來進行研究，且以往有關大鼠聲門文獻在研究方法上都有計算速度太慢或準確性不足的缺點，故本研究提出一影像處理方法來改善上述缺點。其中，影像處理方法來計算聲門面積可分為以下三個處理步驟：

     擷取紅色(R)成分影像。

     利用區域生長(Region-Growing)來界定對象或聲帶的開放區域，並獲得該地區的聲門。

     應用形態學(Morphology)來刪除孤立對象的區域。

    實驗證明，擷取R成分影像後，經由區域生長能夠有效的分割出大鼠聲門區域，接著運用形態學方式來去除雜訊及小的結構區域，使得準確地計算出大鼠聲門面積。最後在與Otsu's method及active-contour method做比較，並從實驗結果證明本研究方法在大鼠聲門影像分析上有較好的準確率並且能夠加快影像處理速度。

    The dynamic change of glottal area is a critical subject in the filed of laryngeal physiology. However, efficient methods for estimating glottal area were discussed rarely in previous literatures. In this regards, a glottal area estimation method by combining region growing technique and morphology operator was proposed in this dissertation. The proposed approach involves three major process steps including
    1. Extracting red color components from the target image;
    2. Using region-growing to delineate the vocal fold opening region;
    3. Applying a morphology operator to remove the isolated subject regions and to obtain the area of the glottis.
    Several experimental results demonstrate both the accuracy and computational efficiency for the glottal area estimation can be greatly improved by using the proposed method.

    誌謝 ..................................................... I 中文摘要 ..................................................II 英文摘要..................................................III 目錄 .....................................................IV 圖目錄.....................................................V 表目錄....................................................VI 第一章 緒論.................................................1 1.1 前言............................................... 1 1.2 研究動機與目的...................................... 4 1.3 論文架構............................................ 4 第二章 相關研究討論......................................... 5 2.1 聲門影像擷取方法介紹................................. 5 2.2.1 核磁共振影像................................... 6 2.2.2 內視鏡…....................................... 7 2.2.3 數位相機....................................... 8 2.2 色彩空間介紹........................................ 9 2.2.1 RGB 色彩空間................................... 9 2.2.2 HSV 色彩空................................... 11 2.2.3 YCbCr 色彩空間................................ 12 2.2.4 色彩空間的選.................................. 14 第三章 聲門影像處理方法.................................... 18 3.1 影像分割方法介紹.................................... 18 3.1.1 邊緣檢測(Edge Detection)...................... 19 3.1.2 主動輪廓(Active Contour)...................... 20 3.1.3 臨界值法(Thresholding)........................ 23 3.1.4 區域生長(Region Growing)...................... 27 3.2 數學形態學(Mathematical Morphology)................ 31 3.2.1 侵蝕(Erosion)與膨脹(Dilate) .................. 31 3.2.2 斷開(Opening)與閉合(Closing) ................. 33 第四章 估計大鼠聲門區域面積研究方法與研究結果................. 36 4.1 估計大鼠聲門面積研究方法............................ 36 4.1.1 大鼠聲門影像擷取.............................. 37 4.1.2 擷取RGB 中R 成分影像.......................... 38 4.1.3 區域生長...................................... 40 4.1.4 形態學....................................... 44 4.2 研究結果........................................... 46 4.2.1 實驗參數設定.................................. 46 4.2.2 實驗結果...................................... 46 4.3 大鼠聲門在不同情況下之探討........................... 52 4.3.1 Ground truth 計算............................ 52 4.3.2 施打辣椒素前之聲門面積準確度比較................. 53 4.3.3 施打辣椒素前後之聲門面積準確度比較............... 55 4.3.4 施打辣椒素後恢復之聲門面積準確度比較............. 57 第五章 結論與未來展望...................................... 60 參考文獻 ................................................. 62

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