TY - GEN
T1 - A GPU based topology-preserving LOD model of trees
AU - Xing, Zhao
AU - Jingjing, Hu
PY - 2009
Y1 - 2009
N2 - We present a model to represent and render tree organs by tightly integrating polygon, point and line primitives. While points and line segments are used to produce the coarser LODs of tree organs, polygons are used to ensure the quality of the finer LODs of these organs. Hence the algorithm can accelerate the rendering of tree geometry by using only a limited percentage of primitives but with good visual quality. Besides, the recently introduced geometry shader of GPU is applied to dynamically construct tree geometry in parallel, and a hierarchical data structure is created for smoothly changing the geometrical representation of tree to the desired number of primitives. Due to keep the topological relations between organs, this topology-preserving simplification algorithm can also be easily used to simulate tree self-pruning, wind sway and other kinds of deformations.
AB - We present a model to represent and render tree organs by tightly integrating polygon, point and line primitives. While points and line segments are used to produce the coarser LODs of tree organs, polygons are used to ensure the quality of the finer LODs of these organs. Hence the algorithm can accelerate the rendering of tree geometry by using only a limited percentage of primitives but with good visual quality. Besides, the recently introduced geometry shader of GPU is applied to dynamically construct tree geometry in parallel, and a hierarchical data structure is created for smoothly changing the geometrical representation of tree to the desired number of primitives. Due to keep the topological relations between organs, this topology-preserving simplification algorithm can also be easily used to simulate tree self-pruning, wind sway and other kinds of deformations.
KW - Graphics processing unit
KW - Level of detail
KW - Plant modeling
KW - Rendering
UR - http://www.scopus.com/inward/record.url?scp=77955647292&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:77955647292
SN - 9789728924843
T3 - Proceedings of the IADIS International Conference Computer Graphics, Visualization, Computer Vision and Image Processing 2009, CGVCVIP 2009. Part of the IADIS MCCSIS 2009
SP - 255
EP - 260
BT - Proceedings of the IADIS International Conference Computer Graphics, Visualization, Computer Vision and Image Processing 2009, CGVCVIP 2009. Part of the IADIS MCCSIS 2009
T2 - IADIS International Conference Computer Graphics, Visualization, Computer Vision and Image Processing 2009, CGVCVIP 2009. Part of the IADIS Multi Conference on Computer Science and Information Systems, MCCSIS 2009
Y2 - 20 June 2009 through 22 June 2009
ER -