Image Positioning System Real-Time Compensation
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Solution Overview
Problem
Existing image positioning systems in orthopedic surgery face inaccuracies due to human error, such as collisions, which affect the positioning origin and subsequently the quality of the operation, necessitating a method for real-time positioning compensation.
Innovation Solution
An image positioning system capable of real-time positioning compensation, which generates and calculates image data and 3D scanning data from a 3D marking device using a coordinate transformation matrix to obtain a positioning compensation amount, thereby improving positioning accuracy by aligning the image positioning system with the 3D marking device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If real-time positioning compensation is implemented, then positioning accuracy is improved, but device complexity increases
Solution Approach 1:
The positioning system is segmented into independent functional modules: image acquisition module, 3D scanning module, coordinate transformation module, and compensation calculation module. Each module processes specific tasks independently, allowing the complex compensation function to be added without overwhelming system complexity. The segmentation enables modular implementation where compensation algorithms can be updated or adjusted without redesigning the entire system.
Solution Approach 2:
A coordinate transformation matrix serves as an intermediary between the image positioning system and the 3D marking device. This mathematical intermediary enables the system to calculate positioning compensation amounts by transforming coordinates between different reference frames, thereby improving accuracy without requiring direct physical modifications to the imaging or scanning hardware.
2Measurement precision
If real-time calculation and compensation are performed, then positioning accuracy is improved, but processing time increases
Solution Approach 1:
The system performs preliminary calibration by establishing the coordinate transformation matrix between the image positioning system and 3D scanning system before actual positioning operations. This preliminary action pre-computes the relationship parameters, so that during real-time operation, only simple compensation calculations are needed rather than full coordinate transformations, significantly reducing processing time while maintaining accuracy.
Solution Approach 2:
The compensation algorithm dynamically adjusts calculation parameters based on the magnitude of positioning deviations. When deviations are small, simplified compensation formulas are used for rapid processing. When larger deviations occur, more comprehensive correction calculations are performed. This adaptive parameter adjustment ensures high positioning accuracy while minimizing processing time under normal operating conditions.
Data Source
AI summary
An image positioning system capable of real-time positioning compensation includes a 3D marking device, a photographing device, a 3D scanning device, a beam splitter, and a processing unit. The 3D marking device has a polyhedral cube. The beam splitter is configured to cause the photographing device and the 3D scanning device to capture an image of and scan the 3D marking device respectively from the same field of view. The processing unit is configured to calculate image data and 3D scanning data generated respectively by the photographing device and the 3D scanning device to obtain a positioning compensation amount and perform positioning compensation.