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BRDF 모델 비교 : 측정 BRDF의 표현을 중심으로
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- 발행일
- 200910
- 출처
- 한국 CAD/CAM학회 논문집, v.14 no.5, pp.346-354
- ISSN
- 1226-0606
- 출판사
- 한국CAD/CAM학회 (SCCE)
- 협약과제
- 09MS2600, 기능 확장형 초고속 랜더러 개발, 남승우
- 초록
- BRDF (bidirectional reflectance distribution function) is critical in realistic simulation of material appearances since it models the directional characteristics of reflection of light. Although many BRDF models have been proposed so far, it is still not easy to find one specific model that could represent all the reflection properties of real materials such as generalized diffusion, off-specular reflection, Fresnel effect, and back scattering. In this paper, we compare three BRDF models including B-spline volume BRDF (BVB), Cook-Torrance, and Lafortune in their ability to represent the measured BRDF data for physically-based rendering. We show that B-spline volume BRDF surpass the others in quality of data fitting and rendering, especially for materials without specular reflections.
- KSP 제안 키워드
- B-Spline, Back scattering, Off-specular, Physically-Based Rendering, Quality of data, Realistic simulations, bidirectional reflectance distribution function(BRDF), data fitting, directional characteristics, generalized diffusion, specular reflection