Surgical Microscope Camera Calibration for Zoom And Focus Tracking Accuracy
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Solution Overview
Problem
Modern surgical microscopes with adjustable zoom and focus settings compromise the accuracy of optical tracking due to changes in the optical path, which affect the spatial tracking precision.
Innovation Solution
A method involving a separate detection system to calibrate the surgical microscope's optical system by correlating spatial positions from both systems, allowing for re-calibration when deviations are detected, maintaining partial calibration where unaffected by adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If adjustable zoom and focus settings are used in the surgical microscope, then the adaptability and ease of operation are improved, but the measurement precision and reliability of spatial tracking deteriorate
Solution Approach 1:
The system continuously compares the optical path position detected by the microscope camera with the position detected by the separate detection system. When a deviation is detected, the system generates feedback to trigger automatic re-calibration of the optical system, ensuring tracking accuracy is maintained despite zoom or focus adjustments.
Solution Approach 2:
The system performs preliminary calibration by establishing the relationship between the microscope camera and the separate detection system before surgical procedures. This pre-established correlation allows the system to quickly detect and correct deviations without requiring manual re-calibration during surgery.
2Adaptability or versatility
If the optical path is adjusted for zoom or focus changes, then the adaptability is improved, but the spatial position alignment between detection systems deteriorates
Solution Approach 1:
The system monitors the spatial position alignment between the microscope camera and separate detection system in real-time. When zoom or focus adjustments cause misalignment, the feedback mechanism triggers automatic re-calibration to restore accurate spatial correspondence between the two detection systems.
Solution Approach 2:
The system dynamically adapts to optical path changes by automatically detecting deviations caused by zoom or focus adjustments and triggering re-calibration procedures. This dynamic response maintains spatial alignment accuracy despite continuous optical adjustments during surgery.
3Measurement precision
If continuous monitoring of spatial position is performed, then the measurement precision is improved, but the complexity of the detection system increases
Solution Approach 1:
The patent introduces a separate detection system as an intermediary to assist the microscope camera in monitoring spatial positions. This intermediary system provides additional detection capability without requiring complex modifications to the existing microscope, distributing the monitoring function across two systems.
Solution Approach 2:
The separate detection system serves multiple functions: it acts as a reference for calibration, provides continuous monitoring of spatial positions, and enables automatic detection of optical path deviations. This multi-functionality reduces the need for multiple specialized systems.
Data Source
AI summary
The present disclosure relates to a computer-implemented method for calibrating an optical system of a surgical microscope, a corresponding computer program, a computer-readable storage medium storing such a program and a computer executing the program, as well as a medical system comprising an electronic data storage device and the aforementioned computer. The present disclosure further relates to a computer-implemented method, a computer program and a system for determining the spatial position of an object to be tracked not only via the surgical microscope, but also via a separate detection system. In case a deviation between the detected spatial positions is recognized, the optical system of the surgical microscope is re-calibrated.