Fourier Synthesis of Ocean Scenes
IEEE Computer Graphics and Applications
Visibility problems for polyhedral terrains
Journal of Symbolic Computation
Lines in space-combinators, algorithms and applications
STOC '89 Proceedings of the twenty-first annual ACM symposium on Theory of computing
Ray tracing deterministic 3-D fractals
SIGGRAPH '89 Proceedings of the 16th annual conference on Computer graphics and interactive techniques
Parametric height field ray tracing
Proceedings of the conference on Graphics interface '92
A unified distance transform algorithm and architecture
Machine Vision and Applications
Sequential Operations in Digital Picture Processing
Journal of the ACM (JACM)
Hidden Line Elimination in Projected Grid Surfaces
ACM Transactions on Graphics (TOG)
New Techniques for Ray Tracing Procedurally Defined Objects
ACM Transactions on Graphics (TOG)
A terrain and cloud computer image generation model
SIGGRAPH '79 Proceedings of the 6th annual conference on Computer graphics and interactive techniques
The directional parameter plane transform of a height field
ACM Transactions on Graphics (TOG)
A Real-Time Photo-Realistic Visual Flythrough
IEEE Transactions on Visualization and Computer Graphics
Terrain Decimation through Quadtree Morphing
IEEE Transactions on Visualization and Computer Graphics
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Height distributional distance transform (HDDT) methods are introduced as a new class of methods for height field ray tracing. HDDT methods utilize results of height field preprocessing. The preprocessing involves computing a height field transform representing an array of cone-like volumes of empty space above the height field surface that are as wide as possible. There is one cone-like volume balanced on its apex centered above each height field cell. Various height field transforms of this type are developed. Each is based on distance transforms of height field horizontal cross-sections. HDDT methods trace rays through empty cone-like volumes instead of through successive height field cells. The performance of HDDT methods is evaluated experimentally against existing height field ray tracing methods.