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| Research and Implementation on Flower Plants Rendering Technology Based on Physical Light Simulation for VR Application |
| HUAI Yongjian ZHANG Han ZHANG Shuai |
| (School of Information Science and Technology, Beijing Forestry University, Beijing 100083, China) |
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Abstract The high realism simulation interaction of flower plants is an important direction of virtual plant visualization. More and more applications are presented by the Virtual Reality (VR) headset device with the popularity of virtual reality technology. The VR system requires a highly realistic immersive picture for which generic plant modeling and graphics engine rendering capabilities are no longer sufficient. In this paper, a physical rendering algorithm is proposed based on Bidirectional Scattering Distribution Function (BSDF) to realistic flower plants by analyzing the principle of illumination and combining the Physics-Based Shading (PBS) technology. Potted flora in light mode is simulated by ShaderLab and the fusion algorithm is optimized. The image is distorted by lens matching rendering technology to make the virtual scene closer to the real human eye vision and reduce the user vertigo when user wearing the VR headset when using the VR helmet equipment HTC Vive. Finally a helmet VR floral plant simulation system is designed and a realistic immersive scene is realized.
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Received: 24 October 2017
Published: 24 April 2018
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| Fund:The National Natural Science Foundation of China (31770589), The Innovation Team Project of Beijing Forestry University (2015ZCQ-XX) |
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Corresponding Authors:
HUAI Yongjian
E-mail: huaiyj@163.com
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| [1] |
巫影, 何琳, 黄映云, 等. 虚拟现实技术综述[J]. 计算机与数字工程, 2002, 30(3): 41-44. doi: 10.3969/j.issn.1672-9722. 2002.03.007.
|
|
WU Ying, HE Lin, HUANG Yingyun, et al. Summarizing of virtual reality technology[J]. Computer and Digital Engineering, 2002, 30(3): 41-44. doi: 10.3969/j.issn.1672- 9722.2002.03.007
|
| [2] |
马伟, 查红彬. 小型植物真实感绘制[J]. 计算机辅助设计与图形学学报, 2009, 21(4): 505-510.
|
|
MA Wei and ZHA Hongshan. Realistic rendering of small- scale plants[J]. Journal of Computer-Aided Design & Computer Graphics, 2009, 21(4): 505-510.
|
| [3] |
淮永建, 曾茜. 花卉植物形态与生长可视化仿真研究[J]. 计算机工程与应用, 2012, 48(8): 185-188. doi: 10.3778/j.issn. 1002-8331.2012.08.053.
|
|
HUAI Yongjian and ZENG Xi. Visual simulation of morphology and growth of virtual flower plants[J]. Computer Engineering and Applications, 2012, 48(8): 185-188. doi: 10.3778/j.issn.1002-8331.2012.08.053.
|
| [4] |
马瑞士, 白顺先. 基于图像的植物叶片枯萎变形测量仿真研究[J]. 计算机仿真, 2012, 29(10): 302-305. doi: 10.3969/j.issn. 1006-9348.2012.10.072.
|
|
MA Ruishi and BAI Shunxian. Image based plant leaves wither deformation measurement simulation[J]. Computer Simulation, 2012, 29(10): 302-305. doi: 10.3969/j.issn.1006- 9348.2012.10.072.
|
| [5] |
张铭. 三维花开过程动态模拟技术研究与实现[D]. [硕士论文], 厦门大学, 2009.
|
|
ZHANG Ming. Research and realization of dynamic simulation technology for 3D diversion process[D]. [Master dissertation], Xiamen University, 2009.
|
| [6] |
淮永建, 李凡. 虚拟花卉植物在可变风场中的运动行为仿真[J]. 农业工程学报, 2012, 28(19): 130-136. doi: 10.3969/j.issn. 1002-6819.2012.19.017.
|
|
HUAI Yongjian and LI Fan. Simulation on motion behavior of virtual flower in variable wind fields[J]. Transactions of the Chinese Society of Agricultural Engineering, 2012, 28(19): 130-136. doi: 10.3969/j.issn.1002-6819.2012.19.017.
|
| [7] |
孟祥艳, 任郁苗, 潘海仙. 真实感体绘制中的光照与阴影模型算法研究[J]. 激光杂志, 2016, 37(8): 141-144. doi: 10.14016/ j.cnki.jgzz.2016.08.141.
|
|
MENG Xiangyan, REN Yumiao, and PAN Haixian. Algorithm for illumination and shadow model in realistic volume rendering[J]. Laser Journal, 2016, 37(8): 141-144. doi: 10.14016/j.cnki.jgzz.2016.08.141.
|
| [8] |
赵慧. 基于辐射度方法的植被真实感模拟[D]. [硕士论文], 吉林大学, 2014.
|
|
ZHAO Hui. Simulation of vegetation realism based on radiation method[D]. [Master dissertation], Jilin University, 2014.
|
| [9] |
唐勇, 张利辉, 吕梦雅, 等. 真实感海洋场景实时建模与绘制研究进展[J]. 燕山大学学报, 2016, 40(6): 471-480. doi: 10.3969/j.issn.1007-791X.2016.06.001.
|
|
TANG Yong, ZHANG Lihui, L? Mengya, et al. Research progress in real time modeling and rendering for realistic ocean scene[J]. Journal of Yanshan University, 2016, 40(6): 471-480. doi: 10.3969/j.issn.1007-791X.2016.06.001.
|
| [10] |
陈圣煜. 基于GPU的复杂植被场景的绘制与动态模拟[D]. [硕士论文], 电子科技大学, 2016.
|
|
CHEN Shengyu. Drawing and dynamic simulation of complex vegetation scene based on GPU[D]. [Master dissertation], University of Electronic Science and Technology of China, 2016.
|
| [11] |
GAO Yuan, LIU Yue, CHENG Dewen, et al. A review on development of head mounted display[J]. Journal of Computer-Aided Design & Computer Graphics, 2016, 28(6): 896-904. doi: 10.3969/j.issn.1003-9775.2016.06.004.
|
| [12] |
谢永华, 袁复兴, 王畅. 基于重要性采样的三维云光照模型的研究[J]. 系统仿真学报, 2016, 28(1): 57-62.
|
|
XIE Yonghua, YUAN Fuxing, and WANG Chang. Research of 3D cloud illumination model based on importance sampling[J]. Journal of System Simulation, 2016, 28(1): 57-62.
|
| [13] |
KAJIYA J T. The rendering equation[J]. ACM Siggraph Computer Graphics, 1986, 20(4): 143-150. doi: 10.1145/15922. 15902.
|
| [14] |
STAM J. Diffraction shaders[J]. Proc Acm Siggraph, 1999, 11(4): 101-110. doi: 10.1145/311535.311546.
|
| [15] |
SADEGHI I, LAVEN P, LAVEN P, et al. Physically-based simulation of rainbows[J]. Acm Transactions on Graphics, 2012, 31(1): 3. doi: 10.1145/2077341.2077344.
|
| [16] |
吴付坤, 吴佳泽, 郑昌文. 应用微表面模型进行衍射效果物理绘制[J]. 计算机辅助设计与图形学学报, 2014, 26(1): 1-9.
|
|
WU Fukun, WU Jiaze, and ZHENG Changwen. A microfacet-based physically rendering of diffraction effects[J]. Journal of Computer-Aided Design & Computer Graphics, 2014, 26(1):1-9.
|
| [17] |
TORRANCE K E and SPARROW E M. Theory for off-specular reflection from roughened surfaces[J]. Journal of the Optical Society of America, 1967, 57(9): 1105-1114. doi: 10.1364/JOSA.57.001105
|
| [18] |
OBERST H, KOUZNETSOV D, SHIMIZU K, et al. Fresnel diffraction mirror for an atomic wave[J]. Physical Review Letters, 2005, 94(1): 013203. doi: 10.1103/PhysRevLett.94. 01320314JANUARY2005.
|
| [19] |
SCHLICK C. An inexpensive BRDF model for physically- based rendering[J]. Computer Graphics Forum, 1994, 13(3): 233-246. doi: 10.1007/s00371-014-0958-x.
|
|
|
|
