Capsule Endoscope Image Quality Testing Under Magnetic Fields
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Solution Overview
Problem
There is no effective method to determine the impact of magnetic fields on the quality of images captured by a magnetically controlled capsule endoscope during digestive tract examinations.
Innovation Solution
A method involving the acquisition of images of a standard color card in both non-magnetic and magnetic field environments, calculation of peak signal-to-noise ratios (PSNR) for each color region, and analysis using a histogram or one-way analysis of variance to assess the effect of magnetic fields on image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a magnetically controlled capsule endoscope system is used to control the capsule endoscope to move in the digestive tract lumen, then the capsule endoscope can be controlled to complete an examination of the digestive tract lumen, but there is no way to determine whether the magnetic field change has an effect on the quality of images captured by the capsule endoscope
Solution Approach 1:
The patent introduces a standard color card as an intermediary object to mediate between the magnetic field environment and the image quality assessment. The color card serves as a reference standard that can be photographed under different magnetic field conditions, allowing indirect measurement of magnetic field effects on image quality through PSNR calculation compared against the standard
Solution Approach 2:
The patent replaces subjective visual assessment of image quality with an automated computational approach using peak signal-to-noise ratio (PSNR) calculation. This substitution of mechanical/manual quality evaluation with algorithmic image processing enables objective, quantitative determination of image quality changes under magnetic field influence
2Productivity
If images are captured in a magnetic field environment during examination, then the digestive tract lumen can be examined, but the quality of the captured images may be affected by the magnetic field
Solution Approach 1:
The patent performs preliminary action by capturing reference images of a standard color card in a non-magnetic field environment before conducting the actual magnetic field examination. These pre-captured standard images serve as a baseline for later comparison, enabling detection of any quality degradation caused by magnetic field exposure during the examination process
Solution Approach 2:
The patent implements a feedback mechanism by calculating PSNR values to quantitatively compare images taken in magnetic field conditions against the non-magnetic field reference. This feedback loop provides real-time or post-processing information about image quality changes, allowing assessment of whether magnetic field interference has degraded the examination images
Data Source
AI summary
A method and system for determining quality of a capsule endoscope image. The method comprises: acquiring a first group of images of a standard color card that are photographed by a capsule endoscope in a non-magnetic-field environment and a second group of images of the standard color card that are photographed by the capsule endoscope in a magnetic field environment; calculating a peak signal-to-noise ratio of each color region of the standard color card in the non-magnetic-field environment and a peak signal-to-noise ratio of each color region of the standard color card in the magnetic field environment according to the acquired first group of images and the acquired second group of images; and determining, according to the calculated peak signal-to-noise ratios, whether a magnetic field affects the quality of a capsule endoscope image. The effect of the magnetic field on the quality of an image can be effectively determined.