Endoscope Detection Area Adjustment for Variable Diameter Accuracy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Endoscope systems face challenges in maintaining constant detection accuracy when using endoscopes of varying diameters, as the detection area size is not adequately adjusted, leading to poor focus and evaluation value accuracy due to the size variation of the subject image.
Innovation Solution
An endoscope system that includes a detection area setting unit to dynamically adjust the detection area based on the determined size of the subject image, ensuring a consistent ratio of detection areas to the subject image regardless of the endoscope diameter, thereby improving autofocus and other processing accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed detection area size is used for all endoscopes, then the system structure is simple, but detection accuracy deteriorates when endoscopes of different diameters are used
Solution Approach 1:
The detection area setting unit dynamically adjusts the detection area size based on the subject image size, which varies with endoscope diameter. This dynamic adjustment ensures that the detection area maintains an appropriate proportion to the subject image regardless of the endoscope diameter, thereby maintaining detection accuracy across different endoscope types without requiring a completely different system for each diameter.
Solution Approach 2:
The system changes the parameter of detection area size according to the detected subject image size. By adjusting this parameter based on the actual imaging conditions, the system maintains optimal detection accuracy for different endoscope diameters while using a single unified system structure.
2Measurement precision
If the detection area is set to match the smallest endoscope subject image, then small endoscopes achieve good detection accuracy, but large endoscopes have treatment tools entering the entire detection area causing poor accuracy
Solution Approach 1:
The detection area size is locally adjusted according to the specific endoscope diameter and resulting subject image size. Rather than using a uniform detection area for all endoscopes, the system adapts the detection area dimensions to match the local characteristics of each endoscope type, ensuring optimal performance for both small and large diameter endoscopes.
Solution Approach 2:
The system changes the detection area parameter based on the subject image size detected from different endoscope diameters. This parameter adaptation allows the same detection system to achieve high accuracy across various endoscope types by adjusting the detection area to appropriate proportions of the subject image for each specific case.
3Measurement precision
If a larger detection area is used for large diameter endoscopes, then detection accuracy is maintained, but the area becomes too large for small diameter endoscopes causing treatment tools to dominate the frame
Solution Approach 1:
The detection area size parameter is dynamically changed according to the subject image size, which corresponds to the endoscope diameter. This ensures that the detection area quantity is appropriately scaled - large enough for large diameter endoscopes to maintain accuracy, but appropriately smaller for small diameter endoscopes to prevent treatment tools from dominating the frame.
Data Source
AI summary
An endoscope system includes: an imaging device detachably connected to an eyepiece unit of an endoscope inserted into a subject, the endoscope taking a subject image inside the subject from a distal end thereof, and the imaging device being configured to capture the subject image taken by the endoscope; a detection area setting unit configured to set a detection area in the captured image captured by the imaging device; a detection processing unit configured to execute, based on an image in the detection area in the captured image, a detection process for calculating an evaluation value of the image; and a subject image determining unit configured to determine a size of the subject image in the captured image, wherein the detection area setting unit changes an area of the entire detection area based on a determination result of the subject image determining unit.