Tree Branch Level of Detail Models for Forest Navigation

Zhang, Xiaopeng; Bao, Guanbo; Meng, Weiliang; Jaeger, Marc; Li, Hongjun; Deussen, Oliver; Chen, Baoquan

Tree Branch Level of Detail Models for Forest Navigation

Dateien

Zhang_2-jemq0hylo6ue7.pdfGröße: 1.21 MBDownloads: 247

Datum

2017

Autor:innen

Zhang, Xiaopeng

Bao, Guanbo

Meng, Weiliang

Jaeger, Marc

Li, Hongjun

Deussen, Oliver

Chen, Baoquan

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Informatik und Informationswissenschaft

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Computer Graphics Forum. 2017, 36(8), pp. 402-417. ISSN 0167-7055. eISSN 1467-8659. Available under: doi: 10.1111/cgf.13088

Zusammenfassung

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.

Fachgebiet (DDC)

004 Informatik

Zitieren

ISO 690

ZHANG, Xiaopeng, Guanbo BAO, Weiliang MENG, Marc JAEGER, Hongjun LI, Oliver DEUSSEN, Baoquan CHEN, 2017. Tree Branch Level of Detail Models for Forest Navigation. In: Computer Graphics Forum. 2017, 36(8), pp. 402-417. ISSN 0167-7055. eISSN 1467-8659. Available under: doi: 10.1111/cgf.13088

BibTex

@article{Zhang2017-12Branc-38402,
  year={2017},
  doi={10.1111/cgf.13088},
  title={Tree Branch Level of Detail Models for Forest Navigation},
  number={8},
  volume={36},
  issn={0167-7055},
  journal={Computer Graphics Forum},
  pages={402--417},
  author={Zhang, Xiaopeng and Bao, Guanbo and Meng, Weiliang and Jaeger, Marc and Li, Hongjun and Deussen, Oliver and Chen, Baoquan}
}

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Universitätsbibliographie

Ja