Knowledge Commons of Institute of Automation，CAS
| Tree Branch Level of DetailModels for Forest Navigation | |
Xiaopeng Zhang1 ; Guanbo Bao1; Weiliang Meng1; Marc Jaeger2,3; Hongjun Li1,4; Oliver Deussen5,6; Baoquan Chen7
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| 发表期刊 | Computer Graphics Forum
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| 2017 | |
| 期号 | 2017页码:1-16 |
| 摘要 | We present a level of detail (LOD) method designed for tree branches. It can be combinedwith methods for processing tree foliage to facilitate navigation through large virtual forests. Starting from a skeletal representation of a tree, we fit polygon meshes of various densities to the skeleton while the mesh density is adjusted according to the required visual fidelity. For distant models, these branch meshes are gradually replaced with semi-transparent lines until the tree recedes to a few lines. Construction of these complete LOD models is guided by error metrics to ensure smooth transitions between adjacent LOD models. We then present an instancing technique for discrete LOD branch models, consisting of polygon meshes plus semi-transparent lines. Line models with different transparencies are instanced on the GPU by merging multiple tree samples into a single model. Our technique reduces the number of draw calls in GPU and increases rendering performance. Our experiments demonstrate that large-scale forest scenes can be rendered with excellent detail and shadows in real time. |
| 关键词 | Level Of Detail Virtual Forests Real Time Branch Models Simplification |
| 收录类别 | SCI |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ia.ac.cn/handle/173211/15070 |
| 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 | 1.NLPR-LIAMA, Institute of Automation, CAS, China 2.AMAP, Cirad, France 3.LIRMM-ICAR,Montpellier University, France 4.Beijing Forestry University, China 5.VCC, Shenzhen Institute of Advanced Technology, CAS, China 6.Universitfat Konstanz, Germany 7.Shandong University, 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 | Xiaopeng Zhang,Guanbo Bao,Weiliang Meng,et al. Tree Branch Level of DetailModels for Forest Navigation[J]. Computer Graphics Forum,2017(2017):1-16. |
| APA | Xiaopeng Zhang.,Guanbo Bao.,Weiliang Meng.,Marc Jaeger.,Hongjun Li.,...&Baoquan Chen.(2017).Tree Branch Level of DetailModels for Forest Navigation.Computer Graphics Forum(2017),1-16. |
| MLA | Xiaopeng Zhang,et al."Tree Branch Level of DetailModels for Forest Navigation".Computer Graphics Forum .2017(2017):1-16. |
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| Zhang_et_al-2017-Com（3684KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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