Digital Surgical Microscope Adaptive Magnification Control
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Solution Overview
Problem
Users of digital surgical microscopes and cameras face difficulties in setting the appropriate magnification to clearly view detailed images without losing image quality, as high pixel density and distance from the display device hinder the perception of small details, especially for those with restricted vision.
Innovation Solution
A method that utilizes situative and user-specific parameters to determine the optimal magnification, employing a combination of optical and digital zoom, where the magnification is increased electronically without changing the image sensor's zoom, ensuring the user can perceive the smallest resolvable details without image quality loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If digital zoom is used to magnify the image further, then the object can be seen in sufficient size on the monitor, but the quality of the image decreases and becomes unsharp and blurry
Solution Approach 1:
The system dynamically changes the magnification parameter based on situative parameters (user distance, visual acuity, display resolution) to achieve optimal image presentation without excessive digital zoom that would degrade quality. The control unit calculates an optimal magnification factor that balances object size and image quality.
Solution Approach 2:
The system incorporates feedback mechanisms by continuously monitoring situative parameters (user distance via distance sensor, visual acuity input, display resolution) and adjusting the magnification accordingly. This closed-loop approach ensures the magnification is optimized for each user's specific viewing conditions, preventing quality loss from over-magnification.
2Manufacturing precision
If optical zoom is increased to maximum telescopic setting, then image quality is maintained at high level, but the user still cannot make out all details if viewing distance is too great
Solution Approach 1:
The system optimizes the optical zoom parameter by calculating the optimal magnification factor based on situative parameters. Rather than always using maximum optical zoom, the system adjusts the zoom level to match the user's viewing distance and visual acuity, maintaining high image quality while ensuring details are visible.
Solution Approach 2:
The system makes the optical zoom dynamic rather than static. The control unit continuously adjusts the optical zoom setting based on real-time situative parameters (user distance, visual acuity, display characteristics), allowing the system to adapt to changing viewing conditions and maintain optimal image quality and detail visibility.
3Ease of operation
If the display device is placed far from the user, then there is sufficient space and comfort, but the user cannot make out all details due to restricted eyesight and high pixel density
Solution Approach 1:
The system replaces the mechanical solution of moving the display closer with an electronic/optical solution. Instead of physically adjusting display position, the system uses situative parameters to calculate and apply appropriate magnification, allowing users to view details clearly from a comfortable distance.
Solution Approach 2:
The system changes the magnification parameter based on user distance and visual acuity to compensate for the increased viewing distance. By dynamically adjusting magnification according to situative parameters, the system ensures details remain perceptible even when the display is positioned at a comfortable distance from the user.
Data Source
AI summary
The invention relates to a method for recording and providing digital images using a digital surgical microscope system. The method includes recording magnified video image of an object region by an image sensor in the image recording unit. The method also includes displaying, on a digital display unit, in at least certain regions, the image recorded by the image sensor. A magnification of the image displayed on the digital display unit is adjusted by a limit value of the magnification. The limit value of the magnification is set using situative parameters to determine an optimum magnification.