Inspection System Surface Color Determination Specular Reflection
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Solution Overview
Problem
Current inspection systems face challenges in accurately determining the surface color of objects, particularly due to the complexities of specular and diffuse reflection components, which affect the accuracy of color determination.
Innovation Solution
The inspection system acquires images of an object's surface from multiple viewpoints, separating and analyzing both specular and diffuse reflection components to determine the surface color more accurately, using a combination of cameras and processing units to synthesize images and control painting systems for precise color matching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If only a single image is used for color determination, then the inspection process is simple and fast, but the color determination accuracy is insufficient due to inability to separate specular and diffuse reflection components
Solution Approach 1:
The patent applies segmentation by dividing the color determination process into multiple stages: acquiring images under different reflection conditions (specular and diffuse), separating these components through image processing, and then combining them for final color determination. This segmentation enables accurate color measurement by handling each reflection component independently, resolving the contradiction between measurement precision and device complexity.
2Measurement precision
If multiple images under different reflection conditions are acquired and processed, then color determination accuracy is improved, but the inspection time and processing complexity increase
Solution Approach 1:
The patent implements preliminary action by pre-acquiring and storing multiple images of the same object under different reflection conditions (specular and diffuse) before the actual inspection. These pre-acquired images are processed in advance to create reference data, which accelerates the real-time inspection process while maintaining high color determination accuracy, thus reducing inspection time.
3Measurement precision
If specular reflection component is included in color determination, then the measurement captures complete surface information, but the color accuracy deteriorates due to glare and highlights
Solution Approach 1:
The patent applies the extraction principle by isolating and separating the specular reflection component from the diffuse reflection component through image processing techniques. By extracting the specular component independently, the system can exclude it from the color determination calculation, eliminating its harmful interference while preserving the essential diffuse reflection information needed for accurate color measurement.
4Object-generated harmful factors
If diffuse reflection component only is used for color determination, then specular reflection interference is eliminated, but surface texture and光泽 information is lost
Solution Approach 1:
The patent applies merging by combining the separately processed specular and diffuse reflection components after individual analysis. The diffuse component provides accurate color information free from specular interference, while the specular component contributes surface texture and光泽 information. By merging these components in a weighted combination or selective integration, the system achieves both color accuracy and complete surface information representation.
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
This approach enhances the accuracy of surface color determination and improves the quality of surface painting by considering both reflection components, allowing for more precise color matching and texture analysis.
Implementation Method 1
an image representing a surface of an object; a plurality of conditions of reflection are obtained from the image representing the surface of the object
Data Source
AI summary
An inspection system includes an acquisition unit and a determination unit. The acquisition unit acquires an image representing a surface of an object. The determination unit performs color determination processing. The color determination processing is performed to determine a color of the surface of the object based on a plurality of conditions of reflection. The plurality of conditions of reflection are obtained from the image representing the surface of the object as acquired by the acquisition unit, and have a specular reflection component and a diffuse reflection component at respectively different ratios on the surface of the object.