Projection Mapping on Multiple Rigid Bodies
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Solution Overview
Problem
Current projection mapping technologies struggle to create immersive and lifelike experiences on dynamic and moving animated figures, especially when dealing with multiple rigid bodies that require precise tracking and image projection alignment.
Innovation Solution
The proposed system includes a show element composed of multiple rigid bodies coupled together, each equipped with trackers for position and orientation sensing. An image sensor generates sensor data used by a controller to determine the positions and orientations of the rigid bodies, allowing for precise projection of images onto each body using a projector, thereby creating a unified and immersive visual experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple rigid bodies are coupled together to form a show element, then the adaptability and visual immersion are improved, but the device complexity and tracking difficulty increase
Solution Approach 1:
The show element is divided into multiple rigid bodies, each independently tracked and projected onto. This segmentation allows each body to be tracked separately using individual trackers, enabling complex visual effects while maintaining manageable tracking complexity through modular processing.
Solution Approach 2:
The system uses a unified controller that manages multiple rigid bodies, trackers, and projectors through a common coordinate system and transformation framework. This universal control approach handles the complexity of multiple components through standardized processing pipelines.
2Measurement precision
If trackers are added to each rigid body for position sensing, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The system replaces complex mechanical measurement systems with optical trackers that use electromagnetic radiation (light) to detect position and orientation. This substitution provides high measurement precision through optical sensing while reducing mechanical complexity compared to traditional encoder-based systems.
3Productivity
If real-time projection mapping is performed on moving rigid bodies, then the productivity and visual engagement are improved, but the computational requirements and system complexity increase
Solution Approach 1:
The system performs preliminary calibration to establish coordinate systems and transformation matrices for each rigid body before operation. This pre-computed reference framework enables real-time projection mapping by allowing the controller to quickly apply transformations during performance without performing complex calculations from scratch each frame.
Solution Approach 2:
The system continuously tracks the position and orientation of rigid bodies using trackers and uses this feedback to dynamically adjust projection mappings in real-time. This closed-loop approach maintains visual accuracy during movement while enabling interactive and responsive visual effects that engage audiences.
Data Source
AI summary
An attraction system may include a projection mapped tangible show element with a first rigid body including a first shell coupled to a first tracker, a second rigid body including a second shell coupled to a second tracker, and a connection coupling the first rigid body and the second rigid body to one another. The connection may enable movement of the first rigid body relative to the second rigid body. The attraction system may also include an image sensor to generate sensor data indicative of a first position of the first rigid body and a second position of the second rigid body and a projector to project first image data on the first rigid body and second image data on the second rigid body.