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USING GEOMETRIC MODELING FOR FEATURE RECOGNITION IN ARCHAEOLOGICAL VESSELS. DEZHI LIU FEATURE GROUP PRISM/ASU. 3DK – September 15, 2000. USING GEOMETRIC MODELING FOR FEATURE RECOGNITION IN ARCHAEOLOGICAL VESSELS. 1. Geometric Modeling for Archaeological Vessels - PowerPoint PPT Presentation
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USING GEOMETRIC MODELING FOR FEATURE RECOGNITION IN ARCHAEOLOGICAL VESSELS
DEZHI LIU
FEATURE GROUP
PRISM/ASU
3DK3DK – – September 15, 2000
3DK3DK – – September 15, 2000
USING GEOMETRIC MODELING FOR FEATURE RECOGNITION IN ARCHAEOLOGICAL VESSELS
1. Geometric Modeling for Archaeological Vessels
2. Features of Archaeological Vessels
3. Feature Recognition
4. Output Analysis Result as XML Files
5. Some Results and Further Work
3DK3DK – – September 15, 2000
1. Geometric Models for Archaeological Vessels
1.1 3D Geometric Models for Archaeological Vessels
1.2 2D Geometric Models for Archaeological Vessels
3DK3DK – – September 15, 2000
1.1 3D Geometric Models
Polygon Meshes
M = (V, E, F)Where V: Vertex Set, E: Edge Set, F: Face Set
3DK3DK – – September 15, 2000
1.1 3D Geometric Models (Continue)
NURB Surfaces
3DK3DK – – September 15, 2000
1.2 2D Geometric Models
Chain Codes
NURB Curves
3DK3DK – – September 15, 2000
2 Features of Archaeological Vessels
2.1 Feature Points
2.2 Contour Types
2.3 Features in Common for Vessels
2.4 Classification of Base
3DK3DK – – September 15, 2000
2.1 Feature Points
3DK3DK – – September 15, 2000
2.1 Feature Points (continue)
3DK3DK – – September 15, 2000
2.2 Contour Types
Simple
3DK3DK – – September 15, 2000
2.2 Contour Types (continue)
Composite
3DK3DK – – September 15, 2000
2.2 Contour Types (continue)
Inflected
3DK3DK – – September 15, 2000
2.2 Contour Types (continue)
Complex
3DK3DK – – September 15, 2000
2.3 Features in Common for Vessels
3DK3DK – – September 15, 2000
2.4 Classification of Base
Base Point
b. Flat base with zero curvature c. Concave base
Base curve (Line Segment)Base curve
a. Convex base
3DK3DK – – September 15, 2000
3 Feature Recognition
3.1 Based on Curvature Analysis
3.2 Based on Angle Change
3.2 Based on Wavelet
3DK3DK – – September 15, 2000
3.1 Curvature Analysis
Inflection Points (IPs)
A point P will be a IP, if P satisfies
К(t) = 0
3DK3DK – – September 15, 2000
3.2 Angle Change
Corner Points (CPs)A point P will be a CP, if the angle changes
sharply at P
End Points (EPs)
3DK3DK – – September 15, 2000
3.3 Wavelet
Please refer to Dasu’s presentation
3DK3DK – – September 15, 2000
4 Output Analysis Result as XML Files
XML Schema
Binary Data Embedding
3DK3DK – – September 15, 2000
5 Some Result and Further Work
3DK3DK – – September 15, 2000
5 Some Result and Further Work (continue)
3DK3DK – – September 15, 2000
5 Some Result and Further Work (continue)
3DK3DK – – September 15, 2000
5 Some Result and Further Work (continue)
3DK3DK – – September 15, 2000
5 Some Result and Further Work (continue)
3DK3DK – – September 15, 2000
5 Some Result and Further Work (continue)
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