Journal of KIISE:Computer Systems and Theory (한국정보과학회논문지:시스템및이론)

Korean Institute of Information Scientists and Engineers (한국정보과학회)
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A Realistic Modeling and Rendering of Cloth Textures by Photometry

사진 측정에 의한 옷감의 질감 모델링 및 사실적 렌더링

  • 김민수 (이화여자대학교 디지털미디어학부) ;
  • 김대현 (이화여자대학교 디지털미디어학부) ;
  • 김명준 (이화여자대학교 디지털미디어학부)
  • Published : 2008.02.15
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Abstract

Modeling and rendering of cloth texture have been regarded as one of the most important factors to enhance reality of the contents in the digital contents industry. So far, however, two major approaches to realistically describe the cloth texture were developed: building analytical reflectance model for target cloth and sometimes thread itself and obtaining overall reflectance model using optical equipments. However, yielding a plausible analytic reflection model satisfying many subtle characteristics of a cloth is not an easy task; moreover, fine-detailed modeling of the cloth pattern across the target clothes should also be accompanied by huge amount of computation. The method to obtain overall reflectance model needs expensive measurement equipments and data size becomes huge. Since it applies in the end the reflectance model obtained at one point of a cloth to across whole the visible area of the target clothes, it cannot properly reproduce the pattern of the clothes nor the texture. To address the aforementioned problems, this paper proposes a simple low cost camera rig and a novel method for realistic modeling and rendering of the cloth texture by analyzing photos taken by the proposed camera rig, which can reproduce even the texture pattern applied to the whole clothes, overcoming the one-point reflectance model.

영상 산업 분야에서 옷감의 질감 모델링과 렌더링은 영상에 사실감을 부여해주는 중요한 요소로 여겨진다. 지금까지는 옷감이나 실의 반사모델을 이론적인 방법으로 계산하거나 계측장비를 통하여 옷감의 전반적인 반사 모델을 구하여 옷감의 재질감을 표현하였다. 이론적인 방법으로는 다양한 옷감의 특성을 재현하기가 어렵고, 옷감 패턴을 견사 레벨에서 자세히 모델링해야 하므로 엄청난 계산 시간을 요한다. 기존의 계측장비를 사용할 경우, 획득된 반사모델 데이타가 너무 크고 한 점에서 측정된 반사모델을 옷감 전체의 반사모델로 사용해야 하므로 옷감의 패턴이나 결의 모양을 제대로 표현할 수 없다. 본 논문에서는 손쉽게 제작할 수 있는 측정장치를 사용하여 실제 옷감을 촬영하고 분석하여 옷감의 직조패턴까지 재현하는 사실적인 질감 모델링 및 렌더링 방법을 제안한다.

Keywords

References

  1. V.L. Volevich, Edward A. Kopylov, Andrei B. Khodulev, Olga A. Karpenko, An Approach to Cloth Synthesis and Visualization, International Conference on Computer Graphics and Visualization, pp. 45-49, 1997
  2. N.Adabala, Nadia Magnenat-Tahlmann, Guangzheng Fei,Visualization of Woven cloth, Eurographics Symposium on Rendering, pp. 178-185, 2003
  3. K.Daubert, Hendrik P.A.Lensh,Wolfgang Heidrich, Hans-Peter Seidel, Efficient Cloth Modeling and Rendering, EG Rendering Workshop, pp. 63-70, 2001
  4. N.Adabala,Nadia Magnenat-Tahlmann, Guangzheng Fei, Real-time Rendering of Woven Clothes, ACM VRST, pp. 41-47, 2003
  5. Y.Wang, Photo-realistic Rendering of Towels using Layered Modeling Method, CSEE, UMBC
  6. K.Daubert, Hans-Peter Seidel, Hardware-based Volumetric Knit-Wear, Eurographics Symposium on Rendering, Vol.21, pp. 575-583, 2002
  7. Y.Chen, Stephen Lin, Hua Zhong, Realistic Rendering and Animation of Knitwear. IEEE Trans. Vis. Comput. Graph, pp. 43-55, 2003
  8. G.Borshukov, Measured BRDF in Film Production - Realistic Cloth Appearance for "The Matrix Reloaded," SIGGRAPH Sketches and Applications, 2003
  9. Y.Takeda, Shinsaku Toyoda, Yu Matsuda, Hiromi T.Tanaka, An Image-based Anisotropic Reflection Modeling of Textile Fabrics based on the Extended KES method, ICCV, 2003
  10. J.Meseth, Gero Muller,Reinhard Klein, Preserving Realism in real-time rendering of Bidirectional Texture Functions, OpenSG Symposium, pp. 89-96, 2003
  11. M.Sattler, Ralf Sarlette,Reinhard Klein, Efficient and Realistic Visualization of Cloth, Rendering Techniques, pp. 167-177, 2003
  12. Yichen Wei, Eyal Ofek, Long Quan, Heung-Yeung Shum, Modeling Hair from multiple Views, SIGGRAPH, Vol.24., pp. 816-820, 2005 https://doi.org/10.1145/1073204.1073267
  13. B.K.P.Horn, Shape from Shading : A Method for Obtaining the Shape of Smooth Opaque Object from One View, MIT Press, 1970
  14. Berthold K.P.Horn, Height and Gradient from shading, International Journal of Computer Vision, Vol.5, pp. 37-75, 1990 https://doi.org/10.1007/BF00056771
  15. A,Hertzmann, Steven M.Seitz, Shape and materials by Example : A photometric Stereo Approach, IEEE CVPR, Vol1. pp. 533-540, 2003
  16. H.Rushmeier, F.Bernardini, Computing Consistent Normals and Colors from Photometric Data, IEEE, pp. 99-108, 1999
  17. D.Nehab, Szymon Rusinkiewicz, James Davis, Ravi Ramamoorthi, Efficiently Combining Positions and Normals for Precise 3D Geometry, Siggraph, pp. 536-543, 2005
  18. Michael Ashikhmin, Simon Premoze, Peter Shirley, A microfacet-based BRDF generator, SIGGRAPH, pp. 65-74, 2000
  19. Y.Mukaigawa, K.Sumino, Y.Yagi, High-Speed Measurement of BRDF using an Ellipsoidal Mirror and a Projector,Proc. IEEE International Workshop on Projector-Camera Systems (PROCAMS2007), 2007
  20. Tomas Akenine-Moller, Eric Haines. Real-Time Rendering, AK Peters, 2002
  21. Donald H. House and David E. Breen, Cloth Modeling and Animation, AK Peters, 2000
  22. S.R.Marschner, Stephen H.Westin, Adam Arbree, Jonathan T. Moon, Measuring and Modeling the Appearance of Finished Wood, SIGGRAPH, pp. 727-734, 2005
  23. S.H.Westin, James R.Arvo, Kenneth E.Torrance, Predicting Reflectance Functions from Complex Surfaces, SIGGRAPH, pp. 255-264, 1992
  24. Nicodemus, JC Richmond, JJ Hsia, IW Ginsberg, T. Limperis, Geometric Considerations and Nomenclature for Reflectance, National Bureau of Standards, pp. 194-196, 1977
  25. L.Clauster,Yannick Boucher, Mathias Paulin, Spectral BRDF modeling using wavelets, SPIE, Vol.4738, pp. 33-43, 2002
  26. Andrew S. Glassner, Principles of digital image synthesis Vol.2, Morgan Kaufmann, 1995
  27. R.Zhang, Ping-Sing Tsai,James Edwin Cryer, Mubarak Shah, Shape from Shading : A Survey, IEEE Trans, Vol.PAMI-21, No.8, Aug., pp. 690-706, 1999
  28. O.Drbohlav, Radim Sara, Specularities Reduce Ambiguity of Uncalibrated Photometric Stereo, Proceedings of the 7th European Conference on Computer Vision, Vol.2, pp. 46-60, 2002
  29. S.Rusinkiewicz, A Survey of BRDF Representation for Computer Graphics, Stanford University, 1997