Extraction of Semantic Dynamic Content from Videos with Probabilistic Motion Models 1st edition by Gwenaëlle Piriou, Patrick Bouthemy, Jian-Feng Yao – Ebook PDF Instant Download/Delivery. 3540219828, 978-3540219828
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ISBN 10: 3540219828
ISBN 13: 978-3540219828
Author: Gwenaëlle Piriou, Patrick Bouthemy, Jian-Feng Yao
The exploitation of video data requires to extract information at a rather semantic level, and then, methods able to infer “concepts” from low-level video features. We adopt a statistical approach and we focus on motion information. Because of the diversity of dynamic video content (even for a given type of events), we have to design appropriate motion models and learn them from videos. We have defined original and parsimonious probabilistic motion models, both for the dominant image motion (camera motion) and the residual image motion (scene motion). These models are learnt off-line. Motion measurements include affine motion models to capture the camera motion, and local motion features for scene motion. The two-step event detection scheme consists in pre-selecting the video segments of potential interest, and then in recognizing the specified events among the pre-selected segments, the recognition being stated as a classification problem. We report accurate results on several sports videos.
Extraction of Semantic Dynamic Content from Videos with Probabilistic Motion Models 1st Table of contents:
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Introduction
- 1.1 Motivation and Background
- 1.2 The Challenge of Extracting Semantic Content from Videos
- 1.3 Probabilistic Models in Motion Estimation and Content Extraction
- 1.4 Objectives and Contributions of the Paper
- 1.5 Structure of the Paper
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Related Work
- 2.1 Video Content Extraction and Event Detection
- 2.2 Probabilistic Motion Models in Computer Vision
- 2.3 Temporal and Spatial Feature Extraction in Video Analysis
- 2.4 Methods for Semantic Understanding of Dynamic Video Content
- 2.5 Limitations of Existing Approaches in Dynamic Content Extraction
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Problem Formulation
- 3.1 Defining Semantic Dynamic Content in Videos
- 3.2 Challenges in Dynamic Content Extraction from Unstructured Videos
- 3.3 Assumptions and Constraints in the Proposed Method
- 3.4 Importance of Temporal Coherence and Motion Context
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Probabilistic Motion Models for Video Analysis
- 4.1 Overview of Probabilistic Motion Models (Hidden Markov Models, Particle Filters, etc.)
- 4.2 Motion Estimation and Tracking Using Probabilistic Frameworks
- 4.3 Temporal Modeling for Dynamic Content Recognition
- 4.4 Uncertainty Representation in Motion Models
- 4.5 Dynamic Scene Modeling with Probabilistic Approaches
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Methodology for Extracting Semantic Dynamic Content
- 5.1 Overview of the Content Extraction Framework
- 5.2 Motion Segmentation and Object Tracking
- 5.3 Identifying Semantically Relevant Events and Actions
- 5.4 Feature Extraction and Representation for Dynamic Content
- 5.5 Integration of Motion Models with Semantic Understanding
- 5.6 Contextual Analysis for Dynamic Scene Interpretation
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Algorithm Design
- 6.1 Step-by-Step Process for Dynamic Content Extraction
- 6.2 Probabilistic Inference for Motion Tracking and Scene Analysis
- 6.3 Dynamic Object Detection and Activity Recognition
- 6.4 Temporal Smoothing and Refinement in Dynamic Scene Extraction
- 6.5 Computational Complexity and Optimization Considerations
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Experimental Setup and Evaluation
- 7.1 Datasets Used for Video Analysis and Content Extraction
- 7.2 Evaluation Metrics for Semantic Content Accuracy
- 7.3 Comparison with State-of-the-Art Video Understanding Methods
- 7.4 Qualitative and Quantitative Evaluation of Dynamic Content Extraction
- 7.5 Performance Analysis in Different Scenarios (e.g., Multiple Objects, Fast Motion)
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Results and Discussion
- 8.1 Visual Results of Semantic Content Extraction from Videos
- 8.2 Performance in Tracking and Recognizing Dynamic Events
- 8.3 Comparative Results with Traditional and Learning-Based Methods
- 8.4 Impact of Probabilistic Motion Models on Extraction Quality
- 8.5 Limitations and Weaknesses of the Proposed Method
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Applications of Probabilistic Motion Models for Video Content Extraction
- 9.1 Video Surveillance and Anomaly Detection
- 9.2 Video Summarization and Scene Understanding
- 9.3 Human Activity Recognition and Gesture Detection
- 9.4 Autonomous Vehicles and Motion Prediction
- 9.5 Applications in Entertainment, Media, and Film Industry
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Challenges and Future Directions
- 10.1 Dealing with Real-World Challenges (Lighting, Occlusions, and Background Clutter)
- 10.2 Improving Temporal Consistency and Long-Term Tracking
- 10.3 Expanding Probabilistic Models for Complex Dynamic Environments
- 10.4 Integration of Deep Learning with Probabilistic Motion Models
- 10.5 Future Research Directions in Video Content Extraction
- Conclusion
- 11.1 Summary of Contributions and Results
- 11.2 Practical Implications for Semantic Video Analysis
- 11.3 Limitations and Areas for Improvement
- 11.4 Final Remarks and Future Work
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