GUO Jie, PAN Jingui. Virtual Area Light for Dynamic and Spatially-Varying Area Lighting[J]. Chinese Journal of Electronics, 2015, 24(2): 306-311. doi: 10.1049/cje.2015.04.013
Citation: GUO Jie, PAN Jingui. Virtual Area Light for Dynamic and Spatially-Varying Area Lighting[J]. Chinese Journal of Electronics, 2015, 24(2): 306-311. doi: 10.1049/cje.2015.04.013

Virtual Area Light for Dynamic and Spatially-Varying Area Lighting

doi: 10.1049/cje.2015.04.013
Funds:  This work is supported by the National Science Foundation of China (No.61321491).
  • Publish Date: 2015-04-10
  • We describe a technique for interactively rendering diffuse scenes with near-field area lighting by introducing a new light type called VAL (Virtual area light). The VALs are generated via the subdivision of the primary planar luminaire, and near-field area lighting effects can be simulated directly from the geometric and radiometric information of these VALs. To ensure a high fidelity of soft shadows, we propose the multi-PCF (Percentage closer filter) algorithm which evaluates visibility through several PCF values of each VAL. Experimental results reveal that our approach can render visually convincing near-field area lighting effects as well as soft shadows without any precomputation. Our strategy also enables high-quality direct illumination results in fully dynamic scenes under both time-varying and spatially-varying area lighting conditions in the order of milliseconds.
  • loading
  • A. Keller, “Instant radiosity”, Proceedings of ACM SIGGRAPH, pp.49-56, 1997.
    W.T. Reeves, et al., “Rendering antialiased shadows with depth maps”, Proceedings of ACM SIGGRAPH, pp.283-291, 1987.
    J. Arvo, “Application of irradiance tensors to the simulation of non-Lambertian phenomena”, Proceedings of ACM SIGGRAPH, pp.335-342, 1995.
    M. Chen, J. Arvo, “A close-form solution for the irradiance due to linearly-varying luminaires”, Proceedings of the Eleventh Eurographics Workshop on Rendering, pp.137-148, 2000.
    M. Chen, J. Arvo, “Simulating non-Lambertian phenomena involving linearly-varying luminaires”, Proceedings of the Twelfth Eurographics Workshop on Rendering, pp.25-38, 2001.
    G. Nichols, R. Penmatsa, C. Wyman, “Interactive, multiresolution image-space rendering for dynamic area lighting”, Comput. Graph. Forum, Vol.29, No.4, pp.1279-1288, 2010.
    S. Laine, et al., “Incremental instant radiosity for real-time indirect illumination”, Proceedings of Eurographics Symposium on Rendering, pp.277-286, 2007.
    T. Ritschel, et al., “Imperfect shadow maps for efficient computation of indirect illumination”, Proceedings of ACM SIGGRAPH Asia, pp.1-8, 2008.
    Z. Dong, T. Grosch, T. Ritschel, J. Kautz, H.-P. Seidel, “Realtime indirect illumination with clustered visibility”, Proceedings of Vision Modeling and Visualization, pp.187-196, 2009.
    T. Annen, J. Kautz, F. Durand, H.-P. Seidel, “Spherical harmonic gradients for mid-range illumination”, Proceedings of Eurographics Symposium on Rendering, pp.331-336, 2004.
    K. Zhou, et al., “Precomputed shadow field for dynamic scenes”, ACM Trans. Graph., Vol.24, No.3, pp.1196-1201, 2005.
    A.W. Kristensen, T. Akenine-Möller, H.W. Jensen, “Precomputed local radiance transfer for real-time lighting design”, ACM Trans. Graph. Vol.24, No.3, pp.1028-1215, 2005.
    B. Sun, R. Ramamoorthi, “Affine double and triple product wavelet integrals for rendering”, ACM Trans. Graph. Vol.28, No.2, pp.14:1-14:17, 2009.
    J. Hensley, T. Scheuermann, G. Coombe, M. Singh, A. Lastra, “Fast summed-area table generation and its applications”, Comput. Graph. Forum, Vol.24, No.3, pp.547-555, 2005.
    M. Harris, J. Owens, S. Sengupta, Y. Zhang, A. Davidson, “Cudpp homepage”, http://cudpp.github.io, 2013-10-9.
    M. Pharr, G. Humphreys, Physically Based Rendering: From Theory to Implementation, 2nd ed., Morgan Kaufmann, pp.760-772, 2010.
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views (214) PDF downloads(763) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return