The algorithmic beauty of plants
The algorithmic beauty of plants
IRIS performer: a high performance multiprocessing toolkit for real-time 3D graphics
SIGGRAPH '94 Proceedings of the 21st annual conference on Computer graphics and interactive techniques
Interactive modelling of branching structures
SIGGRAPH '96 ACM SIGGRAPH 96 Visual Proceedings: The art and interdisciplinary programs of SIGGRAPH '96
Hierarchical rendering of trees from precomputed multi-layer z-buffers
Proceedings of the eurographics workshop on Rendering techniques '96
Proceedings of the 25th annual conference on Computer graphics and interactive techniques
Plant models faithful to botanical structure and development
SIGGRAPH '88 Proceedings of the 15th annual conference on Computer graphics and interactive techniques
A multiphase approach to efficient surface simplification
Proceedings of the conference on Visualization '02
Interactive visualization of complex plant ecosystems
Proceedings of the conference on Visualization '02
Interactive Rendering of Trees with Shading and Shadows
Proceedings of the 12th Eurographics Workshop on Rendering Techniques
Multiresolution plant models with complex organs
Proceedings of the 2006 ACM international conference on Virtual reality continuum and its applications
Extreme model simplification for forest rendering
NPH'05 Proceedings of the First Eurographics conference on Natural Phenomena
Point-based rendering of trees
NPH'05 Proceedings of the First Eurographics conference on Natural Phenomena
Rendering forest scenes in real-time
EGSR'04 Proceedings of the Fifteenth Eurographics conference on Rendering Techniques
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High compression of plant geometry is an important aspect in fast realistic visualization of plants. Hierarchical structuring plant morphology is a key factor for real time plant rendering, especially when pedestrian views, including both close-ups and far views, are requested. We present here a new geometric simplification method, called View-dependent Hierarchical Foliage Simplification (VHFS). It aims to construct efficient multi-resolution models, faithful to botanical knowledge for sparse organs of trees, such as leaves, flowers and fruits. Both preprocessing and view-dependent rendering processes are considered hereby. In the preprocessing phase, sparse organs are simplified hierarchically with respect to the topological structure of the plant, i.e. to the plant branching order hierarchy and the phyllotaxy (or anthotaxy) groups. In the rendering phase, the simplification degrees for organs in different locations in the crown are defined from the current viewpoint. The selection of the different simplification levels is based on the distance to the viewer and a visibility coefficient of the considered organs. This visibility coefficient is an approximate occlusion based on the relationship between the viewing direction and direction of each first order branch. Compared with other foliage simplification methods, the main advantages of VHFS lay in the respect of consistent botanical structure at any stage of compression, ensuring realistic foliage appearance, higher efficiency in preprocessing stage and higher data compression.