3D Finger Interaction Trajectory Capture for Real-Time Analysis

The patent transitions from two-dimensional video image tracking to three-dimensional motion capture technology. The motion capture system uses multiple cameras to capture finger movements from multiple angles, reconstructing three-dimensional trajectory data. This dimensional expansion allows simultaneous collection of both trajectory information and interaction data in three-dimensional space, resolving the limitation of traditional video-based methods.

The patent merges two previously separate data collection approaches into a unified system. The motion capture system simultaneously captures both the three-dimensional trajectory of finger movements and the interaction events with the prototype component. By integrating these functions into a single system, the patent eliminates the need to choose between trajectory collection and interaction data collection, achieving both simultaneously.

The motion capture system is designed with multi-functionality to handle various tracking scenarios. By using multiple cameras positioned at different locations and angles, the system creates overlapping coverage areas that collectively provide comprehensive three-dimensional tracking space. This universal approach allows the system to track finger movements across a larger area without requiring a single complex camera setup, as each camera contributes to the overall three-dimensional reconstruction.

The patent applies three-dimensional modeling to represent the interaction space, allowing comprehensive analysis of finger trajectories in three-dimensional space. The system constructs a three-dimensional model of the interaction environment and maps the captured motion data onto this model, enabling detailed analysis of interaction patterns, contact points, and movement paths that cannot be achieved with two-dimensional analysis, while managing computational complexity through efficient algorithms.