Capsule Endoscope Dynamic Frame Rate Control
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Solution Overview
Problem
Capsule endoscope devices face challenges in efficiently capturing and transmitting image data while conserving power, particularly in varying brightness conditions within the body cavity, leading to suboptimal frame rates and power consumption.
Innovation Solution
Incorporating a brightness distribution measurement unit and an imaging controller that dynamically adjust the frame rate of the imaging unit based on the brightness distribution within the image, switching to higher frame rates when low brightness areas are centered and lower frame rates when they are peripheral, to optimize data acquisition and power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the frame rate is increased to capture more image data, then the information acquisition efficiency is improved, but the power consumption increases
Solution Approach 1:
The frame rate of the imaging unit is dynamically adjusted based on real-time brightness distribution analysis. When low brightness areas are detected at the image center, the frame rate increases to capture critical diagnostic information. When low brightness areas are peripheral, the frame rate decreases to conserve power, resolving the contradiction between information acquisition efficiency and power consumption
Solution Approach 2:
The system changes the operational parameter (frame rate) of the imaging unit based on measured brightness distribution characteristics. By analyzing the position of low brightness areas and adjusting the frame rate accordingly, the system optimizes the balance between capturing sufficient diagnostic information and minimizing power consumption
2Use of energy by moving object
If the frame rate is decreased to save power, then the power consumption is reduced, but the information acquisition efficiency deteriorates
Solution Approach 1:
The system applies different frame rate strategies to different spatial regions of the image. When low brightness areas are detected at the center (critical region), high frame rate is applied. When low brightness areas are peripheral (less critical region), low frame rate is applied. This localized quality adjustment resolves the contradiction by matching power consumption to actual diagnostic needs
Solution Approach 2:
The operational parameter (frame rate) is changed based on the spatial distribution characteristics of brightness in the image. The system analyzes whether low brightness areas are centered or peripheral and adjusts the frame rate parameter accordingly, optimizing the balance between power consumption and information acquisition efficiency
3Ease of operation
If a fixed frame rate is used, then the device operation is simple, but the adaptation to varying brightness conditions is poor
Solution Approach 1:
The system implements a feedback mechanism where the brightness distribution measurement unit continuously monitors image brightness characteristics, and the imaging controller adjusts the frame rate based on this feedback. This closed-loop control enables automatic adaptation to varying brightness conditions while maintaining relatively simple operation
Solution Approach 2:
The capsule endoscope device performs self-adjustment of its frame rate based on its own measured brightness distribution. The device autonomously analyzes its imaging conditions and modifies its operational parameters without external intervention, achieving both simplicity and adaptability
Data Source
AI summary
A capsule endoscope includes: an imaging unit configured to capture inside of a subject and to generate an image of the inside of the subject; a brightness distribution measurement unit configured to measure a brightness distribution in the image generated by the imaging unit; and an imaging controller configured to switch a frame rate of the imaging unit to a frame rate higher than a reference frame rate when an area having brightness lower than a predetermined value is distributed at a center of the image in the brightness distribution measured by the brightness distribution measurement unit and to switch the frame rate of the imaging unit to a frame rate lower than the reference frame rate when the area having the brightness lower than the predetermined value is distributed outside the center of the image.