X-Ray Inspection Quality Scoring for Low-Quality Article Detection
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Solution Overview
Problem
Existing X-ray inspection devices struggle to accurately detect low-quality articles, such as chicken breast with 'woody breast', which is unnaturally hardened, amidst normal articles and foreign matters.
Innovation Solution
An X-ray inspection device that calculates a quality index value based on the area and shade of the X-ray transmission image, determining the article's quality by comparing it against a threshold value, effectively distinguishing between good and low-quality articles by their appearance in the image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional X-ray inspection methods are used to detect foreign matter, then foreign matter detection capability is maintained, but low-quality article detection accuracy deteriorates
Solution Approach 1:
The patent changes the inspection parameters from simple presence/absence detection to multi-dimensional analysis including area ratio, shade density, and quality index values. By calculating these parameters and comparing them against threshold values, the system achieves accurate differentiation between good and low-quality articles while maintaining foreign matter detection capability
Solution Approach 2:
The patent transitions from two-dimensional image analysis to three-dimensional quality assessment by introducing the quality index value that combines area ratio and shade density. This dimensional expansion enables comprehensive quality evaluation that captures both size and density characteristics of the articles
2Productivity
If simple threshold-based inspection is used, then inspection speed is maintained, but quality differentiation capability deteriorates
Solution Approach 1:
The patent performs preliminary calculations of area ratio, shade density, and quality index values during the image processing stage. By pre-calculating these parameters and establishing threshold values in advance, the system enables rapid quality determination without compromising inspection speed, as the complex analysis is completed before the final judgment stage
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
Accurately detects low-quality articles like woody breast by identifying them as dark and small, while normal articles appear light and large, thereby preventing shipment of inferior products.
Implementation Method 1
an X-ray irradiation unit that irradiates an article with X-rays; an X-ray detection unit that detects the X-rays
Data Source
AI summary
An X-ray inspection device includes an X-ray irradiation unit that irradiates an article with X-rays, an X-ray detection unit that detects the X-rays, and an inspection unit that inspects the article based on an image created from a detection result of the X-rays detected by the X-ray detection unit. The inspection unit determines that a quality of the article is low in a case where a quality index value is greater than a threshold value, the quality index value being calculated based on an area of a region, in which the article is present, in the image and on a shade of the image or a weight of the article.