Virtual Coordinate Calibration for Cross-System Tracking Alignment
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Solution Overview
Problem
Existing interactive devices and tracking apparatuses often have different initial positioning conditions and coordinate systems, leading to incorrect data transfer and reduced user experience due to lack of offset calibration.
Innovation Solution
A coordinate system offset calculating apparatus and method that generates virtual calibration coordinates, receives sensing coordinates from a tracking apparatus, and calculates the offset between different coordinate systems using these coordinates to improve alignment accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different positioning methods are used for interactive device and tracking apparatus, then positioning flexibility is improved, but coordinate system alignment deteriorates
Solution Approach 1:
The patent introduces virtual calibration coordinates as an intermediary reference system between the interactive device and tracking apparatus. These virtual coordinates serve as a common language that both devices can reference, enabling coordinate transformation and alignment despite using different positioning methods. The virtual calibration coordinates act as a mediator that bridges the coordinate system gap between vision-based inside-out positioning and infrared-based outside-in positioning.
2Device complexity
If offset calibration is not performed, then device complexity is reduced, but data accuracy deteriorates
Solution Approach 1:
The patent performs offset calibration in advance by pre-establishing virtual calibration coordinates and calculating the coordinate system offset between devices. This preliminary action ensures that coordinate transformation parameters are ready before actual interaction occurs, eliminating the need for real-time calibration computations and reducing operational complexity while maintaining high data accuracy.
3Loss of time
If coordinate system offset is not calculated, then processing time is reduced, but service quality deteriorates
Solution Approach 1:
The coordinate system offset is calculated in advance during an initialization or calibration phase, rather than being computed in real-time during user interactions. This preliminary calculation stores transformation parameters that can be quickly applied during actual use, minimizing processing time delays while ensuring high service quality and accurate data provision.
Data Source
AI summary
A coordinate system offset calculating apparatus, method, and non-transitory computer readable storage medium thereof are provided. The apparatus generates at least two virtual calibration coordinates, and the at least two virtual calibration coordinates correspond to a first coordinate system. The apparatus receives at least two sensing coordinates from a tracking apparatus in response to the tracking apparatus moving to the at least two virtual calibration coordinates, the at least two sensing coordinates are generated by the tracking apparatus, and the at least two sensing coordinates correspond to a second coordinate system. The apparatus calculates a coordinate system offset corresponding to the first coordinate system and the second coordinate system based on the at least two virtual calibration coordinates and the at least two sensing coordinates.