Change Degree Deriving Device Focus Deviation Analysis
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Solution Overview
Problem
Existing methods fail to accurately measure deterioration of objects, especially those difficult to access, by determining focus deviation and color changes, as they rely on direct measurement techniques that are impractical for distant or complex surfaces.
Innovation Solution
A device comprising an image capturing unit and a processing unit that captures images of a known color body and an object, detects focus deviation using contrast analysis, and calculates color difference to assess deterioration, employing multiple regression and colorimetric conversions to determine the change degree.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If direct measurement techniques are used to determine focus deviation and color changes, then measurement precision may be maintained, but ease of operation deteriorates due to impracticality for distant or complex surfaces
Solution Approach 1:
The patent uses image capture to create a visual copy of the object and known color body, allowing remote measurement without direct contact. The image data serves as a replica that can be analyzed computationally, enabling measurement of distant or inaccessible objects while maintaining measurement accuracy through digital analysis of the captured images.
Solution Approach 2:
The patent introduces a known color body as an intermediary reference object with predetermined color values. This intermediary serves as a mediator between the measurement system and the target object, providing a reference for comparing color changes and determining deterioration levels without requiring direct measurement of the target object itself.
2Ease of operation
If image capture is used to enable remote measurement, then ease of operation improves, but measurement precision deteriorates due to focus deviation between object and known color body
Solution Approach 1:
The patent performs preliminary detection of focus deviation by analyzing the detection image before conducting the actual color measurement. By detecting and quantifying the focus deviation in advance, the system can compensate for its effect on color accuracy, ensuring precise deterioration measurement even when the object and known color body are at different distances from the camera.
Solution Approach 2:
The patent implements a feedback mechanism where the detected focus deviation information is used to adjust or compensate the color difference calculation. The focus deviation detection results feed back into the measurement process, allowing the system to correct for focus-related errors and maintain accurate deterioration assessment despite varying focus conditions.
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
Enables accurate and practical measurement of object deterioration by analyzing focus deviation and color changes, providing a reliable method for assessing deterioration levels even in hard-to-reach locations.
Implementation Method 1
an image capturing device that captures, in a same shot, a known color body and an object to be measured for deterioration
Implementation Method 2
a detecting unit that detects a focus deviation of the color samples in the image, based on the detection image
Data Source
AI summary
Provided is a change degree deriving device including a receiving unit that receives an image obtained by capturing a known color body and an object while focusing on the object, the known color body including plural of color samples, each of which has a known color numerical value, and a detection image, and a detecting unit that detects a focus deviation of the color samples in the image, based on the detection image.