傅楸善臺灣大學：資訊工程學研究所廖偉勝Liao, Wei-ShengWei-ShengLiao2007-11-262018-07-052007-11-262018-07-052004http://ntur.lib.ntu.edu.tw//handle/246246/54026In this thesis, we discuss the image pipeline of a digital still camera (DSC). We present a flowchart of the DSC and discuss the relations of components of the flow path of the DSC. We implement a DSC in practice. We discuss some principles of the DSC. That makes us understand the DSC more. We also present an original and faster auto-focus method.Chapter 1 Introduction 1 Chapter 2 Digital Still Camera System 3 2.1 Optical Black (OB) 4 2.2 Gamma Correction 5 2.3 Color Interpolation 11 2.4 RGB-to-YCbCr 14 2.5 JPEG (Joint Photographic Experts Group) Encoding 15 2.6 DSP (Digital Signal Processor) 18 2.7 Imaging Flowchart 19 Chapter 3 Auto-Exposure 24 3.1 Introduction 24 3.2 Auto-Exposure Methods 28 Chapter 4 Auto-White-Balance 31 4.1 Introduction 31 4.2 Auto-White-Balance Methods 35 Chapter 5 Auto-Focus 36 5.1 Introduction 36 5.2 Auto-Focus Methods 45 5.2.1 Edge Detection Methods 45 5.2.2 Lens Position Searching Algorithms 48 Chapter 6 Equipment and Experiment Setup 50 Chapter 7 Implementation Methods 53 7.1 Interpolation Method 53 7.2 Auto-Exposure Method 56 7.3 Auto-White-Balance Method 57 7.4 Auto-Focus Method 62 Chapter 8 Implementation Result 66 8.1 The Result of Color Interpolation 66 8.2 The Result of Auto-Exposure 70 8.3 The Result of Auto-White-Balance 74 8.4 The Result of Auto-Focus 76 Chapter 9 Conclusion and Future Work 84 9.1 Conclusion 84 9.2 Future Work 84 Reference 85en-US數位相機自動對焦Auto-focusDigital Still Camerathesis