Virtual Material Swatch Generation via Camera Response Correction
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Solution Overview
Problem
Current methods for visualizing physical materials are inaccurate due to their dependence on lighting conditions and are costly and time-consuming to acquire through photography and computer-generated renders.
Innovation Solution
A system and method for creating and visualizing physically based virtual materials using a capture device model, camera response determination, and lookup tables of linearly transformed cosines, which allows for the generation of virtual material swatches and their integration into a library of material presets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If photography and computer-generated renders are used to acquire material imagery, then material visualization can be obtained, but the process is cost prohibitive and time consuming
Solution Approach 1:
The patent creates a virtual copy of the physical material sample by scanning it and generating a corresponding three-dimensional representation. This virtual copy can be manipulated and visualized without repeatedly photographing or rendering the physical material, thereby reducing time and cost while maintaining visualization accuracy.
Solution Approach 2:
The system changes the state of material representation from physical samples requiring photography to digital three-dimensional models. By transforming the material data into a computational representation, the system enables rapid manipulation and visualization without the time-consuming processes of traditional photography and rendering.
2Measurement precision
If material visualization is performed without adequate consideration of environmental conditions, then visualization can be obtained, but the quality and accuracy of the visualization is low
Solution Approach 1:
The patent segments the material visualization into independent components: the physical material sample, the scanning process, the three-dimensional representation, and the virtual environment. This segmentation allows each component to be optimized independently, improving accuracy while managing complexity through modular processing.
Solution Approach 2:
The system introduces a three-dimensional digital representation as an intermediary between the physical material sample and the final visualization. This intermediary captures the essential material properties through scanning and allows for accurate visualization in various virtual environments without directly modeling complex environmental interactions.
3Measurement precision
If a comprehensive shading model with multiple parameters is used, then material representation accuracy is improved, but the complexity of processing and computation increases
Solution Approach 1:
The patent performs preliminary scanning and processing of the physical material sample to create a three-dimensional representation with embedded material properties. This preliminary action captures all necessary material information in advance, allowing for accurate rendering in various environments without the computational complexity of real-time analysis during visualization.
Data Source
AI summary
Virtual creation and visualization of a physically based virtual material swatch includes identifying a capture device model to support for use in the generation of the virtual material swatch, determining camera response of the capture device model, determining lookup tables of linearly transformed cosines for a plurality of parameters of a shading model, identifying a sample physical material, and determining material description for the sample physical material. A system and method may also include scanning a user physical material, selecting one or more of material preset, geometry preset, environment preset, and camera preset, and creating a virtual material swatch for the user physical material based on the selections.