Medical Observation System Light Control for 3D Imaging
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Solution Overview
Problem
Existing medical observation systems face limitations in finely controlling light-quantity distribution for clear imaging of complex three-dimensional structures, particularly due to the limitations of single LED light sources and lack of adaptive irradiation patterns based on subject shape.
Innovation Solution
A medical observation system with a circuitry that generates an irradiation image based on captured image brightness, corrects it according to the rotation angle of an optical member, and projects the corrected image using an image projector to achieve fine control over light-quantity distribution for improved image clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single LED light source is used with controlled light quantity, then the light source structure is simple, but the controllable light-quantity distribution is limited and cannot achieve fine control for complex three-dimensional structures
Solution Approach 1:
The single LED light source is segmented into multiple virtual light sources through software processing. The control device divides the illumination area into multiple regions and independently controls the light quantity for each region, achieving fine-grained light-quantity distribution control without adding physical light sources or complex optical components.
Solution Approach 2:
The patent changes the control parameter from overall light intensity to spatially-resolved light quantity distribution. By processing the captured image to generate light quantity distribution information and mapping it to corresponding illumination regions, the system achieves precise control over light quantity at different spatial locations using software-based parameter adjustment.
2Adaptability or versatility
If a fixed irradiation pattern is used, then the device operation is simple, but the irradiation pattern cannot adapt to different subject shapes and brightness distributions
Solution Approach 1:
The system captures the subject's brightness distribution through the imaging device, processes this information to generate light quantity distribution data, and uses this feedback to adjust the irradiation pattern. This closed-loop feedback mechanism enables the irradiation pattern to automatically adapt to different subject shapes and brightness characteristics without manual intervention.
Solution Approach 2:
The irradiation pattern transitions from a fixed static configuration to a dynamic adaptive pattern. The control device continuously adjusts the light quantity distribution based on real-time captured images, allowing the irradiation pattern to dynamically match the subject's three-dimensional structure and brightness variations.
3Reliability
If uniform illuminating light is applied, then the illumination system is simple, but blown-out highlights and blocked-up shadows occur in three-dimensional structures
Solution Approach 1:
The patent applies local quality control by adjusting the light quantity according to the specific characteristics of each illumination region. Areas with high brightness (prone to blown-out highlights) receive reduced light quantity, while areas with low brightness (prone to blocked-up shadows) receive increased light quantity, achieving localized optimization of image quality.
Solution Approach 2:
The system applies partial illumination adjustment by selectively modifying light quantity in specific regions rather than uniformly adjusting all areas. This targeted approach applies excessive illumination to shadowed areas and reduces illumination in highlight areas, preventing image quality issues without over-complicating the overall illumination system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables precise control of light-quantity distribution, reducing blown-out highlights and blocked-up shadows, resulting in clearer images of complex three-dimensional structures by adjusting light intensity based on the subject's brightness distribution and rotation angle.
Implementation Method 1
an imaging device, configured to capture the subject image condensed by the optical member
Implementation Method 2
an optical member having an elongated shape, the optical member being configured to condense a subject image
Data Source
AI summary
A medical control apparatus includes a circuitry configured to: generate an irradiation image represented by illuminating-light irradiation, based on a brightness distribution of a captured image captured by an imaging device; and control generation of a projection image and projection of the projection image onto a subject by an image projector provided in an optical member based on the irradiation image and a rotation angle for rotation of the optical member rotatably coupled to the imaging device about a longitudinal axis of the optical member relative to the imaging device.