Optimal Importance Sampling for Tracking in Image Sequences: Application to Point Tracking 1st edition by Elise Arnaud, Etienne Mémin – Ebook PDF Instant Download/Delivery. 3540219828, 978-3540219828
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ISBN 10: 3540219828
ISBN 13: 978-3540219828
Author: Elise Arnaud, Etienne Mémin
In this paper, we propose a particle filtering approach for tracking applications in image sequences. The system we propose combines a measurement equation and a dynamic equation which both depend on the image sequence. Taking into account several possible observations, the likelihood is modeled as a linear combination of Gaussian laws. Such a model allows inferring an analytic expression of the optimal importance function used in the diffusion process of the particle filter. It also enables building a relevant approximation of a validation gate. We demonstrate the significance of this model for a point tracking application.
Optimal Importance Sampling for Tracking in Image Sequences: Application to Point Tracking 1st Table of contents:
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Introduction
- 1.1 Motivation for Tracking in Image Sequences
- 1.2 Importance Sampling in Tracking
- 1.3 Applications of Point Tracking in Computer Vision
- 1.4 Contributions of the Paper
- 1.5 Structure of the Paper
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Related Work
- 2.1 Overview of Tracking Methods in Image Sequences
- 2.2 Feature Point Tracking Algorithms
- 2.3 Monte Carlo Methods in Tracking and Computer Vision
- 2.4 Importance Sampling and Its Use in Dynamic Systems
- 2.5 Limitations and Gaps in Existing Tracking Approaches
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Problem Definition
- 3.1 Point Tracking: Problem Formulation
- 3.2 Defining the Tracking Model
- 3.3 Assumptions and Constraints in Point Tracking
- 3.4 Challenges in Real-Time Tracking and Accuracy
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Importance Sampling for Tracking
- 4.1 Basic Concept of Importance Sampling
- 4.2 Optimal Importance Sampling in Tracking
- 4.3 The Importance Weighting Scheme
- 4.4 Estimation and Correction of Tracking States
- 4.5 Adaptive Importance Sampling in Dynamic Environments
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Point Tracking Algorithm Using Optimal Importance Sampling
- 5.1 Overview of the Point Tracking Framework
- 5.2 Particle Filter-based Point Tracking
- 5.3 Propagation of Particles and State Estimation
- 5.4 Likelihood Function for Point Tracking
- 5.5 Resampling Strategies and Optimal Weighting
- 5.6 Handling Multiple Points and Occlusions
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Algorithm Design and Optimization
- 6.1 Algorithm Design for Efficient Sampling and Tracking
- 6.2 Speeding Up Tracking with Parallelization
- 6.3 Real-Time Processing Considerations
- 6.4 Handling Noise and Measurement Uncertainty
- 6.5 Optimization Techniques for Performance and Accuracy
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Experimental Setup and Evaluation
- 7.1 Datasets Used for Point Tracking
- 7.2 Performance Metrics for Tracking Accuracy (e.g., Tracking Error, Precision, Recall)
- 7.3 Experimental Setup: Video Sequences and Test Scenarios
- 7.4 Comparison with Other Tracking Methods
- 7.5 Hardware and Software Platforms for Experiments
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Results and Discussion
- 8.1 Quantitative Evaluation of Tracking Performance
- 8.2 Comparison with Existing Point Tracking Techniques
- 8.3 Analysis of the Importance Sampling Efficiency
- 8.4 Effectiveness of Optimal Importance Sampling in Noisy Environments
- 8.5 Visual Comparison of Tracking Results
- 8.6 Discussion of Strengths and Limitations
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Applications of Point Tracking with Optimal Importance Sampling
- 9.1 Object Tracking in Video Surveillance Systems
- 9.2 Motion Capture and Animation
- 9.3 Robotics: Visual Servoing and Navigation
- 9.4 Augmented Reality and Interactive Systems
- 9.5 Tracking in Autonomous Vehicles and UAVs
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Challenges and Future Directions
- 10.1 Scaling the Algorithm to Handle Larger Scenes
- 10.2 Improving Robustness to Occlusions and Cluttered Backgrounds
- 10.3 Integration with Deep Learning for Feature Extraction
- 10.4 Real-Time Performance and Hardware Optimization
- 10.5 Extending to Multi-Object and Multi-Feature Tracking
- 10.6 Future Research Directions in Optimal Sampling for Tracking
- Conclusion
- 11.1 Summary of Contributions
- 11.2 Impact of Optimal Importance Sampling on Point Tracking
- 11.3 Limitations and Possible Improvements
- 11.4 Final Thoughts and Future Outlook
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