本論文共涵蓋三個不同的主題。第一部份為視覺檢測機器的實作。第二部份為修正型對焦技術的實作。第三部份為對焦測深技術的實作。

Three different topics associated with their respective applications are proposed in this thesis. The first application is the implementation of a PC-Based Vision Inspecting Machine. The Second topic is to carry out a advanced Auot-focusing technology. And the third topic is focused on the implementation of a Depth-from-Focus Technology.

摘要 i
目錄 ii
圖目錄 V
表目錄 Vii
第一章 緒論 1
1.1 前言 1
1.2 研究動機與目的 1
1.3 論文架構 2
第二章 實驗設備介紹 3
2.1 三軸PC-Based控制平台 3
2.1.1 硬體元件規格 4
2.1.2 交流伺服馬達與驅動器 4
2.1.3 CNC多軸運動控制卡 5
2.1.4 注意事項 6
2.2 影像擷取系統 7
2.2.1 CCD攝影機 7
2.2.2 鏡頭 8
2.2.3 影像擷取卡 9
2.3 人機介面 11
第三章 對焦技術 14
3.1 頻域分析 14
3.1.1 快速傅立葉轉換(Fast Fourier Transform)15
3.1.2 頻譜分析 17
3.1.3 理論驗證 20
3.2 目標函數(Criterion Function) 22
3.2.1 差距係數總和(Sum-Modulus-Difference) 22
3.2.2 影像拉普拉斯能量(Energy of Laplacian
of the Image) 23
3.2.3 最大梯度值(Gradient Magnitude
Maximization) 23
3.2.4 變異數(Variance) 24
3.3 目標函數效能驗證 25
3.4 影響評估效能之因素 30
3.4.1 周圍光源問題 30
3.4.2 CCD及影像擷取卡的光學轉移函數 31
3.4.3 外界雜訊 33
3.4.4 影響評估 34
3.5 高斯低通濾波器參數的選取 35
3.5.1 評估目標函數–訊號雜訊比
(Signal-to-Noise Ratio) 36
3.5.2 高斯函數寬度值評估準則 37
3.6 自動對焦技術 38
3.6.1 最佳對焦位置評估方法 39
3.6.2 選擇目標函數 41
3.6.3 自動對焦測試結果與分析 42
第四章 測深技術 46
4.1 對焦影像表面(Focused Image Surface
，FIS) 46
4.2 測深技術(Shape from Focused) 47
4.3 實測結果與分析 50
第五章 結論 59
參考文獻 61

參考文獻

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