Effect Coating Image Generation via Spectral Data Correlation
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Solution Overview
Problem
Current methods for generating high-quality display images of effect coatings require high computing power and predefined illumination conditions, making them resource-intensive and unsuitable for standard screens, and existing texture tolerance models are not universally applicable for effect coatings, leading to unreliable color matching.
Innovation Solution
A computer-implemented method that generates display images of effect coatings by correlating an axis of a color image with an ordered list of measurement geometries and adding a texture layer using an aspecular-dependent scaling function, allowing for ad-hoc generation of high-quality images with low hardware resources, without relying on 3D-rendering techniques, and retaining color hue information in gloss regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If 3D-rendering techniques are used to generate display images of effect coatings, then high-quality images with accurate color and texture representation can be obtained, but high computing power and predefined illumination conditions are required, making the system complex and resource-intensive
Solution Approach 1:
The patent uses measured spectral reflection data from real effect coatings to generate display images, copying the actual optical properties rather than relying on complex 3D rendering. The method measures CIEL*a*b* values at multiple measurement geometries and uses these real measurements to create accurate color and texture representations, eliminating the need for computationally intensive rendering while maintaining image quality.
Solution Approach 2:
The patent replaces the mechanical/computational 3D rendering system with an optical measurement-based approach. Instead of using virtual models and rendering algorithms that require high computing power, the system uses spectral reflectance measurements and color space transformations to generate display images, substituting complex computational geometry with straightforward optical data processing.
2Manufacturing precision
If 3D-rendering techniques are used to generate display images, then accurate color and texture representation can be achieved, but the system requires predefined illumination conditions and object data, reducing adaptability
Solution Approach 1:
The patent creates a universal system that can generate display images for various illumination conditions using a single set of measured spectral reflection data. By measuring the coating's optical properties at multiple standard geometries and storing them in a lookup table, the system can adapt to different illumination conditions without requiring re-measurement or re-rendering, making the system highly versatile and adaptable.
Solution Approach 2:
The patent performs preliminary measurements of the effect coating's spectral reflection at multiple standard measurement geometries and stores this data in advance. This preliminary action allows the system to quickly generate accurate display images for various illumination conditions without performing complex real-time calculations, enabling rapid adaptation to different viewing and illumination scenarios.
3Productivity
If standard display images are used to show effect coating characteristics, then low resolution representations can be displayed, but high quality images are required for visual comparison of color and visual texture
Solution Approach 1:
The patent creates a dynamic display system that can generate high-quality images on demand rather than relying on pre-computed static images. The system measures the actual optical properties of the effect coating and generates customized display images with appropriate resolution and quality for visual comparison, allowing the display to adapt its characteristics based on the specific coating being evaluated.
Solution Approach 2:
The patent changes the parameters used in generating display images based on the specific effect coating being displayed. By adjusting the resolution, color space, and measurement geometries according to the coating's properties, the system can optimize the balance between display speed and visual comparison accuracy for different types of effect coatings.
4Ease of manufacture
If existing texture tolerance models are used for color matching, then color matching can be performed, but the models are not universally applicable to all effect coating materials, reducing reliability
Solution Approach 1:
The patent changes the approach to color matching by using measured spectral reflection data and CIEL*a*b* values at multiple measurement geometries instead of relying on generic texture tolerance models. This parameter-based approach allows for reliable color matching across different effect coating materials by directly measuring and comparing the actual optical properties of the coatings.
Solution Approach 2:
The patent replaces the abstract texture tolerance models with a direct measurement-based color matching system. Instead of using pre-defined tolerance ranges that may not apply to all effect coatings, the system measures the actual color and texture characteristics of each coating and compares them directly, providing reliable and universally applicable color matching.
Data Source
AI summary
Disclosed herein are methods and systems for generating display images of effect coatings. Further disclosed herein are methods and systems for ad-hoc generation of high quality images displaying the color as well as the texture of effect coating(s) without the use of rendering techniques using predefined illumination conditions and object data of virtual objects. The generated display images are especially suitable for assessing characteristics of effect coating(s) or for assessing color differences between two or more effect coating(s) based on the generated display images by arranging them side by side in horizontal order. It is also possible to transpose the display images by swapping the x- and y-axis of the images such that an optimized arrangement in vertical order, e. g. for mobile devices, is obtained.