Endoscope Frame Rate Adjustment for Coherent Imaging
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Solution Overview
Problem
Conventional endoscope systems face challenges in acquiring complete and coherent images of a body cavity due to variable insertion speed and limited image width, leading to fragmented images and potential missed observations during side-view observations.
Innovation Solution
An endoscope system that includes a light source, deflection optical system, image capturing parts, insertion speed detection, frame rate adjustment, exposure correction, and sensitivity adjustment to form coherent two-dimensional images by arranging strip-shaped images based on detected insertion speed, ensuring continuous and clear imaging during insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the insertion part is quickly inserted, then the insertion speed increases, but the acquired images become fragments and may not be complete
Solution Approach 1:
The system dynamically adjusts the frame rate of the image capturing part based on the detected insertion speed. When insertion speed increases, the frame rate is increased accordingly to maintain complete image acquisition. This dynamic adaptation ensures that the imaging system responds appropriately to varying operational conditions, preventing image fragmentation while allowing fast insertion.
Solution Approach 2:
The system uses a feedback mechanism where the insertion speed detection part continuously monitors the insertion speed and feeds this information back to the frame rate adjustment part. This closed-loop control allows the system to automatically adjust the frame rate based on actual insertion conditions, ensuring reliable image acquisition regardless of insertion speed variations.
2Reliability
If the frame rate is increased to match high insertion speed, then image completeness is maintained, but the system complexity increases
Solution Approach 1:
The system performs self-adjustment by automatically modifying the frame rate based on detected insertion speed without requiring external intervention. The frame rate adjustment part autonomously processes the insertion speed information and adjusts the image capturing parameters accordingly, reducing the need for complex manual control systems while maintaining image completeness.
Solution Approach 2:
The system changes operational parameters (frame rate) based on detected conditions (insertion speed). By dynamically adjusting the frame rate parameter in response to insertion speed variations, the system maintains image quality and completeness without requiring fundamental redesign of the imaging system, thus managing complexity through parameter optimization rather than structural complexity.
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
The system ensures continuous and clear imaging of the body cavity, preventing missed observations by adjusting frame rate, exposure time, and sensitivity based on insertion speed, resulting in complete and undistorted images even at varying insertion speeds.
Implementation Method 1
a deflection optical system being provided at a tip of the insertion part for outwardly directing the illumination light guided through the insertion part in a direction of a radius of the insertion part and for introducing a light inwardly returned from the living organism in the direction of the radius of the insertion part into the insertion part
Data Source
AI summary
To provide an endoscope system that includes a light source, an insertion part to be inserted into a living organism for guiding a illumination light emitted from the light source and a light returned from the living organism, a deflection optical system for outwardly directing the illumination light in a radius direction of the insertion part and for introducing a light inwardly returned from the living organism in the radius direction into the insertion part, a part for capturing the returned light, a part for detecting an insertion speed of the insertion part, a part for adjusting a frame rate for the image capturing of the image capturing part based on the detected insertion speed, an image forming part for arranging acquired images at a pitch based on the insertion speed to form an image of the inside of the living organism, and a part for displaying the formed image.