Knowledge Commons of Institute of Automation,CAS
Large-scale forest rendering: Real-time, realistic, and progressive | |
Bao, Guanbo; Li, Hongjun; Zhang, Xiaopeng; Dong, Weiming | |
发表期刊 | COMPUTERS & GRAPHICS-UK |
2012-05-01 | |
卷号 | 36期号:3页码:140-151 |
文章类型 | Article |
摘要 | Real-time rendering of large-scale forest landscape scenes is important in many applications, such as video games, Internet graphics, and landscape and cityscape scene design and visualization. One challenge in the field of virtual reality is transferring a large-scale forest environment containing plant models with rich geometric detail through the network and rendering them in real time. We present a new framework for rendering large-scale forest scenes realistically and quickly that integrates extracting level of detail (LOD) tree models, rendering real-time shadows for large-scale forests, and transmitting forest data for network applications. We construct a series of LOD tree models to compress the overall complexity of the forest in view-dependent forest navigation. A new leaf phyllotaxy LOD modeling method is presented to match leaf models with textures, balancing the visual effect and model complexity. To progressively render the scene from coarse to fine, sequences of LOD models are transferred from simple to complex. The forest can be rendered after obtaining a simple model of each tree, allowing users to quickly see a sketch of the scene. To improve client performance, we also adopt a LOD strategy for shadow maps. Smoothing filters are implemented entirely on the graphics processing unit (CPU) to reduce the shadows' aliasing artifacts, which creates a soft shadowing effect. We also present a hardware instancing method to render more levels of LOD models, which overcomes the limitation of the latest CPU that emits primitives into only a limited number of separate vertex streams. Experiments show that large-scale forest scenes can be rendered with smooth shadows and in real time. (C) 2012 Elsevier Ltd. All rights reserved. |
关键词 | Real-time Rendering Level Of Details Shadow Mapping Gpu Forest Trees |
WOS标题词 | Science & Technology ; Technology |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Computer Science |
WOS类目 | Computer Science, Software Engineering |
WOS记录号 | WOS:000303221000003 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ia.ac.cn/handle/173211/2833 |
专题 | 多模态人工智能系统全国重点实验室_多媒体计算 |
作者单位 | Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100190, Peoples R China |
第一作者单位 | 模式识别国家重点实验室 |
推荐引用方式 GB/T 7714 | Bao, Guanbo,Li, Hongjun,Zhang, Xiaopeng,et al. Large-scale forest rendering: Real-time, realistic, and progressive[J]. COMPUTERS & GRAPHICS-UK,2012,36(3):140-151. |
APA | Bao, Guanbo,Li, Hongjun,Zhang, Xiaopeng,&Dong, Weiming.(2012).Large-scale forest rendering: Real-time, realistic, and progressive.COMPUTERS & GRAPHICS-UK,36(3),140-151. |
MLA | Bao, Guanbo,et al."Large-scale forest rendering: Real-time, realistic, and progressive".COMPUTERS & GRAPHICS-UK 36.3(2012):140-151. |
条目包含的文件 | 下载所有文件 | |||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Large-scale forest r(4324KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论