Computational geometry: an introduction
Computational geometry: an introduction
Algorithms in combinatorial geometry
Algorithms in combinatorial geometry
The algorithmic beauty of plants
The algorithmic beauty of plants
Incremental topological flipping works for regular triangulations
SCG '92 Proceedings of the eighth annual symposium on Computational geometry
Three-dimensional alpha shapes
ACM Transactions on Graphics (TOG)
Delaunay triangulations in three dimensions with finite precision arithmetic
Computer Aided Geometric Design
SIGGRAPH '94 Proceedings of the 21st annual conference on Computer graphics and interactive techniques
A modelling method and user interface for creating plants
Proceedings of the conference on Graphics interface '97
SIGGRAPH '85 Proceedings of the 12th annual conference on Computer graphics and interactive techniques
The digital Michelangelo project: 3D scanning of large statues
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
Geometric structures for three-dimensional shape representation
ACM Transactions on Graphics (TOG)
Plant models faithful to botanical structure and development
SIGGRAPH '88 Proceedings of the 15th annual conference on Computer graphics and interactive techniques
Interactive Modeling of Plants
IEEE Computer Graphics and Applications
Reconstructing 3D Tree Models from Instrumented Photographs
IEEE Computer Graphics and Applications
ACM SIGGRAPH 2006 Papers
Knowledge-based modeling of laser-scanned trees
SIGGRAPH '05 ACM SIGGRAPH 2005 Sketches
Constructing a 3D trunk model from two images
Graphical Models
Knowledge and heuristic-based modeling of laser-scanned trees
ACM Transactions on Graphics (TOG)
Texture-lobes for tree modelling
ACM SIGGRAPH 2011 papers
On the use of depth camera for 3D phenotyping of entire plants
Computers and Electronics in Agriculture
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Reconstruction of a real tree from scattered scanned points is a new challenge in virtual reality. Although many progresses are made on main branch structures and overall shape of a tree, reconstructions are still not satisfactory in terms of silhouette and details. We do think that 3D reconstruction of the tree crown shapes may help to constrain accurate reconstruction of complete real tree geometry. We propose here a novel approach for tree crown reconstruction based on an improvement of alpha shape modeling, where the data are points unevenly distributed in a volume rather than on a surface only. The result is an extracted silhouette mesh model, a concave closure of the input data. We suggest an appropriate scope of proper alpha values, so that the reconstruction of the silhouette mesh is a valid manifold surface. Experimental results show that our technique works well in extracting the crown shapes of real trees.