Importance-Driven Real-Time Indirect Glossy Reflection Algorithm

被引：0
|
作者：
Chen J. [1 ,2 ]
Chen Z. [1 ,2 ]
Guo F. [1 ,2 ]
Zhang Y. [1 ,2 ]
机构：
[1] College of Computer Science, Sichuan University, Chengdu
[2] National Key Laboratory of Fundamental Science on Synthetic Vision, Sichuan University, Chengdu
来源：
Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao/Journal of Computer-Aided Design and Computer Graphics | 2023年 / 35卷 / 11期
关键词：
importance driven; indirect glossy reflection; real-time rendering; virtual point lights;
D O I：
10.3724/SP.J.1089.2023.19757
中图分类号：
学科分类号：
摘要：
Rendering indirect glossy reflection in real-time helps to improve the realism of rendered scenes. To solve the problem of virtual point lights (VPLs) shading at glossy materials, a rendering algorithm based on the importance of VPLs lighting contribution is proposed. Firstly, a tile-based lighting contribution estimation method is proposed, which quickly estimates the light contribution of VPLs through tile fitting and tile culling. Secondly, an importance-driven distribution map is generated by an adaptive weight temporal algorithm. Finally, the Mipmap multi-level texture mapping method quickly generates different densities of VPLs in different areas in the scene. The experimental results on metal ring and Stanford rabbit scenes indicate that compared with stochastic light culling algorithm, the proposed algorithm achieves better rendering quality with the same number of VPLs, and the root mean square error of the rendering results in this paper are no more than 2%. © 2023 Institute of Computing Technology. All rights reserved.
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页码：1760 / 1768
页数：8
相关论文
共 24 条
  • [1] Tokuyoshi Y, Harada T., Stochastic light culling for VPLs on GGX microsurfaces, Computer Graphics Forum, 36, 4, pp. 55-63, (2017)
  • [2] Keller A., Instant radiosity, Proceedings of the 24th Annual Conference on Computer Graphics and Interactive Techniques, pp. 49-56, (1997)
  • [3] Dachsbacher C, Stamminger M., Reflective shadow maps, Proceedings of the Symposium on Interactive 3D Graphics and Games, pp. 203-231, (2005)
  • [4] Lensing P., LightSkin: globale echtzeitbeleuchtung für virtual und augmented reality, (2014)
  • [5] Bischoff D, Schwandt T, Broll W., A real-time global illumination approach for high resolution reflective shadow maps in open world scenes, Proceedings of the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications, pp. 116-126, (2017)
  • [6] Sriwasansak J, Gruson A, Hachisuka T., Efficient energy- compensated VPLs using photon splatting, Procee- dings of the ACM on Computer Graphics and Interactive Techniques, (2018)
  • [7] Schwandt T, Kunert C, Broll W., Glossy reflections for mixed reality environments on mobile devices, Proceedings of International Conference on Cyberworlds, pp. 138-143, (2018)
  • [8] Laine S, Saransaari H, Kontkanen J, Et al., Incremental instant radiosity for real-time indirect illumination, Proceedings of the 18th Eurographics Conference on Rendering Techniques, pp. 277-286, (2007)
  • [9] Veach E, Guibas L J., Metropolis light transport, Proceedings of the 24th Annual Conference on Computer Graphics and Interactive Techniques, pp. 65-76, (1997)
  • [10] Simon F, Hanika J, Dachsbacher C., Rich-VPLs for improving the versatility of many-light methods, Computer Graphics Forum, 34, 2, pp. 575-584, (2015)
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