Deterioration Measuring Apparatus Using Achromatic Reference
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Solution Overview
Problem
Existing methods for measuring deterioration of objects, especially those with achromatic and chromatic colors, face inaccuracies due to device-dependent captured data and environmental light variations, making it difficult to determine the change degree of target colors without a known color body.
Innovation Solution
A deterioration measuring apparatus and method that uses an achromatic color portion as a reference to correct for capture conditions and environment light, deriving the change degree by comparing histograms of red, green, and blue tones before and after aging, with tone correction based on achromatic colors like white, to accurately assess color changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If device-dependent captured data is used for color measurement, then the measurement process is simple, but the measurement precision deteriorates due to environmental light variations and capture condition differences
Solution Approach 1:
The patent introduces an achromatic color portion as an intermediary reference element. This reference portion captures environmental light conditions and serves as a mediator to normalize and compare chromatic color measurements taken under different capture conditions, thereby eliminating the need for complex environmental controls while maintaining high measurement precision
Solution Approach 2:
The patent transforms the measurement approach by changing from direct absolute color value comparison to relative color change comparison. By calculating color changes relative to the achromatic reference portion, the system adapts to varying environmental conditions and capture parameters, maintaining precision without requiring fixed capture conditions
2Measurement precision
If a known color body is used as reference for color measurement, then measurement precision improves, but the device complexity and operational requirements increase
Solution Approach 1:
The patent enables the measured object itself to provide the reference function through its achromatic color portion. Instead of requiring an external known color body, the system uses the object's own white or achromatic area as the reference, allowing the object to serve its own measurement needs and eliminating additional reference equipment
Solution Approach 2:
The achromatic color portion serves multiple functions simultaneously: it acts as both part of the object being measured and as the reference standard for measurement. This multi-functionality eliminates the need for separate reference color bodies while maintaining measurement precision across different objects and conditions
3Ease of operation
If environmental light variations are not compensated, then the measurement process remains simple, but the reliability of color change measurement deteriorates
Solution Approach 1:
The achromatic reference portion acts as an intermediary that captures environmental light variations. By comparing chromatic color changes relative to this reference, the system automatically compensates for environmental light changes without requiring complex measurement procedures or multiple reference standards
Data Source
AI summary
A change degree deriving apparatus includes a receiving unit and a deriving unit. The receiving unit is configured to receive first image data of an object including an achromatic color and a first color and reference image data of the object. The first image data relates to the first color. The reference image data serves as a reference. The deriving unit is configured to derive a change degree of the object from a first difference based on the first image data and the reference image data received by the receiving unit. The first difference is a difference between the first image data and the reference image data, which occurs at a chromatic color portion when a portion corresponding to the achromatic color is set as a reference.