面向VR應用的花卉植物物理渲染技術研究與實現

淮永建; 張晗; 張帥

doi:10.11999/JEIJ170995

面向VR應用的花卉植物物理渲染技術研究與實現

doi: 10.11999/JEIJ170995 cstr: 32379.14.JEIJ170995

(北京林業(yè)大學信息學院北京 100083)

基金項目:

國家自然科學基金(31770589)，北京林業(yè)大學創(chuàng)新團隊項目(2015ZCQ-XX)

詳細信息

作者簡介:
淮永建：男，1970年生，教授，博士生導師，研究方向為虛擬現實技術及可視化. 張晗：女，1993年生，碩士生，研究方向為虛擬植物及交互技術. 張帥：男，1990年生，初級工程師，研究方向為虛擬現實及可視化.

中圖分類號: TP391
計量
- 文章訪問數: 1788
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- 被引次數: 0
出版歷程
- 收稿日期: 2017-10-24
- 修回日期: 2018-03-28
- 刊出日期: 2018-07-19

Research and Implementation on Flower Plants Rendering Technology Based on Physical Light Simulation for VR Application

HUAI Yongjian ZHANG Han ZHANG Shuai

Funds:

The National Natural Science Foundation of China (31770589), The Innovation Team Project of Beijing Forestry University (2015ZCQ-XX)

摘要

摘要: 花卉植物高真實感的仿真交互是目前虛擬植物可視化研究的一個重要方向。隨著虛擬現實技術的普及，越來越多的應用采用了VR頭戴設備的呈現方式。VR系統(tǒng)需要高度真實的沉浸感畫面，通用的植物建模和圖形引擎渲染功能已不能滿足該需求。該文通過分析光照原理并融合基于物理的渲染技術，提出基于雙向散射分布函數BSDF的花卉植物高度真實感的物理渲染算法，利用ShaderLab，對幾種盆栽花卉植物在光照下進行仿真，并對融合算法做優(yōu)化處理。針對VR頭盔設備HTC Vive的成像效果，對圖像進行扭曲變形優(yōu)化，使畫面更符合人眼雙目立體視覺成像效果，增強系統(tǒng)沉浸感。最后基于該方法設計并實現了一個頭盔式VR花卉植物仿真模擬系統(tǒng)，獲得了逼真的場景漫游體驗效果。
- 虛擬現實 /
- 花卉植物建模 /
- 光照模型 /
- 透鏡匹配渲染
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.
- Virtual Reality (VR)、Flower plant modeling、Light model、Lens matching rendering /

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