Tree Branch Level of Detail Models for Forest Navigation

	Tree Branch Level of Detail Models for Forest Navigation
	Baoquan Chen; Xiaopeng Zhang; Guanbo Bao; Weiliang Meng; Marc Jaeger; Hongjun Li; Oliver Deussen
刊名	COMPUTER GRAPHICS FORUM
	2017
文献子类	期刊论文
英文摘要	We present a level of detail (LOD) method designed for tree branches. It can be combined with 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.
URL标识	查看原文
语种	英语
WOS记录号	WOS:000417496200028
内容类型	期刊论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/12446]
专题	深圳先进技术研究院_数字所
作者单位	COMPUTER GRAPHICS FORUM
推荐引用方式 GB/T 7714	Baoquan Chen,Xiaopeng Zhang,Guanbo Bao,et al. Tree Branch Level of Detail Models for Forest Navigation[J]. COMPUTER GRAPHICS FORUM,2017.
APA	Baoquan Chen.,Xiaopeng Zhang.,Guanbo Bao.,Weiliang Meng.,Marc Jaeger.,...&Oliver Deussen.(2017).Tree Branch Level of Detail Models for Forest Navigation.COMPUTER GRAPHICS FORUM.
MLA	Baoquan Chen,et al."Tree Branch Level of Detail Models for Forest Navigation".COMPUTER GRAPHICS FORUM (2017).