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Analysis of Ancient Mosaic Images for Dedicated ... - Institut Fresnel

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xiv<br />

6.4.2 Image Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173<br />

6.4.3 Scene Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174<br />

6.5 Case Study: Reconstruction <strong>of</strong> the Mogao Caves <strong>of</strong> Dunhuang . . . . . . . . . . . . . . . 175<br />

6.5.1 3D Reconstruction <strong>of</strong> Mogao Cave 322 . . . . . . . . . . . . . . . . . . . . . . . 175<br />

6.5.2 Image Capturing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176<br />

6.5.3 Result . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181<br />

6.6 Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181<br />

6.6.1 A Complete Building: Arc de Triomphe . . . . . . . . . . . . . . . . . . . . . . . . 181<br />

6.6.2 Environment Scene . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183<br />

6.6.3 Further Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183<br />

6.7 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189<br />

Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189<br />

7 Pattern Discovery from Eroded Rock Art 191<br />

Yang Cai<br />

7.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191<br />

7.2 Surface Imaging Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192<br />

7.2.1 Laser Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193<br />

7.2.2 Pattern Projection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195<br />

7.2.3 Stick Shadow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196<br />

7.2.4 Multiview Imaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197<br />

7.2.5 Polynomial Texture Maps (PTM) . . . . . . . . . . . . . . . . . . . . . . . . . . 199<br />

7.3 Pattern Discovery Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200<br />

7.3.1 Simulated Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201<br />

7.3.2 Data Trans<strong>for</strong>mation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201<br />

7.3.3 Trans<strong>for</strong>mation Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202<br />

7.3.4 Off-Line Handwriting Recognition . . . . . . . . . . . . . . . . . . . . . . . . . . 205<br />

7.3.5 Interactive Versus Automatic Discovery . . . . . . . . . . . . . . . . . . . . . . . . 207<br />

7.4 From Reconstruction to Knowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208<br />

7.5 Interaction Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208<br />

7.6 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209<br />

Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210<br />

8 Computational <strong>Analysis</strong> <strong>of</strong> Archaeological Ceramic Vessels and their Fragments 215<br />

Andrew R. Willis<br />

8.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216<br />

8.1.1 Significance <strong>of</strong> Generic Artifact Reconstruction . . . . . . . . . . . . . . . . . . . . 217<br />

8.1.2 Significance <strong>of</strong> Ceramic Vessel Reconstruction . . . . . . . . . . . . . . . . . . . . 217<br />

8.1.3 Traditional Puzzle Solving and Artifact Reconstruction . . . . . . . . . . . . . . . 218<br />

8.2 Artifact Reconstruction Systems: Basic Components and Concepts . . . . . . . . . . . . 219<br />

8.2.1 Digitizing Artifacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220<br />

8.2.2 Approaches <strong>for</strong> Computational Sherd <strong>Analysis</strong> . . . . . . . . . . . . . . . . . . . 220<br />

8.2.3 Computerized Typology <strong>for</strong> Automated Sherd Classification . . . . . . . . . . . . 222<br />

8.2.4 Computerized Vessel Reconstruction by Fragment Matching . . . . . . . . . . . . 224<br />

8.3 Computational Models <strong>for</strong> Vessels and their Fragments . . . . . . . . . . . . . . . . . . . 225<br />

8.3.1 Modeling Ceramic Vessels as Surfaces <strong>of</strong> Revolution . . . . . . . . . . . . . . . . 225

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