Example Based Stereo with General BRDFs 1st edition by Adrien Treuille, Aaron Hertzmann, Steven M. Seitz – Ebook PDF Instant Download/Delivery. 3540219835, 978-3540219835
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ISBN 10: 3540219835
ISBN 13: 978-3540219835
Author: Adrien Treuille, Aaron Hertzmann, Steven M. Seitz
This paper presents an algorithm for voxel-based reconstruction of objects with general reflectance properties from multiple calibrated views. It is assumed that one or more reference objects with known geometry are imaged under the same lighting and camera conditions as the object being reconstructed. The unknown object is reconstructed using a radiance basis inferred from the reference objects. Each view may have arbitrary, unknown distant lighting. If the lighting is calibrated, our model also takes into account shadows that the object casts upon itself. To our knowledge, this is the first stereo method to handle general, unknown, spatially-varying BRDFs under possibly varying, distant lighting, and shadows. We demonstrate our algorithm by recovering geometry and surface normals for objects with both uniform and spatially-varying BRDFs. The normals reveal fine-scale surface detail, allowing much richer renderings than the voxel geometry alone.
Example-Based Stereo with General BRDFs 1st Table of contents:
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Introduction
- 1.1 Background and Motivation
- 1.2 Stereo Vision and Depth Estimation
- 1.3 The Role of BRDFs in Stereo Vision
- 1.4 Example-Based Approaches in Computer Vision
- 1.5 Objectives and Contributions of the Paper
- 1.6 Structure of the Paper
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Related Work
- 2.1 Stereo Matching Techniques
- 2.2 Photometric Stereo and BRDF Modeling
- 2.3 Example-Based Methods in Computer Vision
- 2.4 Integration of BRDFs in Stereo Vision
- 2.5 Limitations of Current Stereo Methods with Complex Materials
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Fundamentals of Stereo Vision
- 3.1 Introduction to Stereo Vision and Depth Estimation
- 3.2 Geometric Models for Stereo Matching
- 3.3 Correspondence Problem in Stereo Imaging
- 3.4 Standard Techniques for Depth Recovery (e.g., Epipolar Geometry, Semi-Global Matching)
- 3.5 Challenges in Stereo Vision: Textureless Regions, Occlusions, and Specularities
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BRDF Modeling for Stereo
- 4.1 Introduction to BRDFs: Definition and Importance
- 4.2 General BRDF Models and Their Components
- 4.3 Reflectance and Lighting Conditions in Stereo Vision
- 4.4 Challenges with Real-World BRDFs in Stereo Matching
- 4.5 Analytical vs. Empirical BRDF Models
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Example-Based Stereo Matching
- 5.1 Overview of Example-Based Approaches
- 5.2 Selection of Stereo Examples from Training Data
- 5.3 How Examples Aid in Handling Complex BRDFs
- 5.4 Features Used for Matching (Texture, Color, Normalized Reflectance)
- 5.5 Exploiting Photometric and Geometric Cues in Example-Based Methods
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Incorporating BRDFs in Example-Based Stereo
- 6.1 Using BRDF Models to Improve Stereo Matching
- 6.2 Example-Based Stereo with Specular Reflection Handling
- 6.3 Joint Optimization of Depth and Reflectance
- 6.4 BRDF-Aware Stereo Algorithms: Matching, Regularization, and Depth Recovery
- 6.5 Practical Considerations in Applying BRDFs to Stereo Vision
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Algorithm Implementation
- 7.1 Preprocessing: Image Rectification and Calibration
- 7.2 Example-Based Stereo Algorithm with BRDF Modeling
- 7.3 Efficient Matching Cost Computation for Stereo Pairs
- 7.4 Optimization Framework for Depth and Reflectance Estimation
- 7.5 Handling Occlusions and Disparities in Example-Based Stereo
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Experimental Setup and Evaluation
- 8.1 Datasets and Test Cases for Stereo Evaluation
- 8.2 Performance Metrics: Depth Accuracy, Reflectance Estimation Quality
- 8.3 Comparison with Conventional Stereo Matching Techniques
- 8.4 Evaluating BRDF Models in Stereo Scenarios
- 8.5 Results from Real-World and Synthetic Experiments
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Results and Discussion
- 9.1 Visual Results: Stereo Reconstruction with General BRDFs
- 9.2 Impact of Example-Based Methods on Depth Accuracy
- 9.3 Handling Complex Reflectance and Specularities in Stereo
- 9.4 Comparison of Stereo Results: Example-Based vs. Traditional Techniques
- 9.5 Analysis of Errors and Limitations in BRDF Handling
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Applications
- 10.1 3D Object Reconstruction and Scene Understanding
- 10.2 Augmented Reality (AR) and Virtual Reality (VR) Applications
- 10.3 Robotics: Object Detection and Grasping
- 10.4 Industrial Applications: Surface Inspection and Quality Control
- 10.5 Medical Imaging and Surface Reconstruction from Stereo
- Challenges and Future Directions
- 11.1 Scalability of Example-Based Stereo Methods
- 11.2 Improving BRDF Handling for Dynamic and Complex Materials
- 11.3 Real-Time Stereo Processing with BRDF Models
- 11.4 Machine Learning for Adaptive Example Selection and BRDF Estimation
- 11.5 Future Research in Multi-View Stereo and Advanced Reflectance Modeling
- Conclusion
- 12.1 Summary of Contributions and Key Findings
- 12.2 Practical Implications of Example-Based Stereo with BRDF Modeling
- 12.3 Closing Remarks and Future Work
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