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Dynamic Projection Mapping for Robust Sphere Posture Tracking Using Uniform/Biased Circumferential Markers
IEEE Transactions on Visualization and Computer Graphics
|September 13, 2021
Summary
This study introduces a novel circumferential marker for spatial augmented reality. This marker offers robust tracking of dynamic objects, overcoming limitations of conventional markers in challenging visual conditions.
Area of Science:
- Computer Vision
- Augmented Reality
- Robotics
Background:
- Spatial augmented reality (SAR) systems require precise tracking of dynamic objects for advanced graphics presentation.
- Conventional tracking markers struggle with occlusion, blurring, and wide-range movements, limiting SAR applications.
- Existing methods lack robustness in real-world, dynamic scenarios.
Purpose of the Study:
- To develop a novel tracking marker system for spatial augmented reality that is robust against occlusion and blurring.
- To enable high-speed, high-accuracy tracking of dynamic objects, including spheres, in complex environments.
- To support real-time visualization and human interaction in widely dynamic projection mapping systems.
Main Methods:
- Introduction of a uniform circumferential marker that appears as an ellipse under perspective projection.
- Development of a biased circumferential marker for embedding unique coding and absolute posture decoding.
- Proposal of a novel recognition algorithm and rough initialization using multi-ellipse geometry for precise tracking.
- Implementation of a high-speed, widely dynamic projection mapping system for real-time visualization.
Main Results:
- The proposed circumferential markers demonstrate high-speed, high-accuracy, and robust tracking of dynamically moving spheres.
- The markers exhibit superior performance compared to conventional dot-based markers, especially under blurring and occlusion.
- Continuous contour lines enable reliable tracking across a wide range of motion, including depth.
- Real-time rotation visualization on a moving sphere surface was successfully achieved.
Conclusions:
- The developed circumferential marker system significantly enhances tracking capabilities in spatial augmented reality.
- This innovation addresses key limitations of conventional markers, paving the way for more sophisticated SAR applications.
- The system provides a robust foundation for dynamic projection mapping and human-computer interaction in complex visual environments.
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