The aim of this study is to systematically evaluate the adaptability of the bidirectional reflectance distribution function (BRDF) model for three different materials (leather, fabric, and plastic) by comprehensively analyzing the comparison function, the amount of data, and the fitting time. It is found that the best visual simulation for leather requires a medium glossy BRDF model and excludes the Fresnel effect; textile is best matched with a low glossy model and a uniformly distributed Fresnel effect to ensure a high degree of visual realism; and plastic shows excellent rendering performance with a high glossy model combined with a uniform Fresnel effect. In conclusion, this study emphasizes the importance of customizing BRDF models for different material properties to enhance rendering realism in the field of computer graphics and material rendering. By finely tuning the gloss level and considering whether to apply the Fresnel effect or not, the visual expressiveness of a specific material is significantly optimized, providing a more accurate and efficient solution for material simulation in virtual environments. The experiments were conducted using PANTONE’s Total Appearance Capture device, and the MATLAB environment was utilized for data processing and analysis to ensure the validity and practicality of the findings.

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Accurate Matching and Effectiveness Evaluation of BRDF Model Parameters in Total Appearance Capture

  • Chang Liu,
  • Longchen Han,
  • Yunfei Chu,
  • Maohai Lin

摘要

The aim of this study is to systematically evaluate the adaptability of the bidirectional reflectance distribution function (BRDF) model for three different materials (leather, fabric, and plastic) by comprehensively analyzing the comparison function, the amount of data, and the fitting time. It is found that the best visual simulation for leather requires a medium glossy BRDF model and excludes the Fresnel effect; textile is best matched with a low glossy model and a uniformly distributed Fresnel effect to ensure a high degree of visual realism; and plastic shows excellent rendering performance with a high glossy model combined with a uniform Fresnel effect. In conclusion, this study emphasizes the importance of customizing BRDF models for different material properties to enhance rendering realism in the field of computer graphics and material rendering. By finely tuning the gloss level and considering whether to apply the Fresnel effect or not, the visual expressiveness of a specific material is significantly optimized, providing a more accurate and efficient solution for material simulation in virtual environments. The experiments were conducted using PANTONE’s Total Appearance Capture device, and the MATLAB environment was utilized for data processing and analysis to ensure the validity and practicality of the findings.