Towards image realism with interactive update rates in complex virtual building environments
I3D '90 Proceedings of the 1990 symposium on Interactive 3D graphics
Visibility preprocessing for interactive walkthroughs
Proceedings of the 18th annual conference on Computer graphics and interactive techniques
Hierarchical Z-buffer visibility
SIGGRAPH '93 Proceedings of the 20th annual conference on Computer graphics and interactive techniques
Real-time, continuous level of detail rendering of height fields
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
Real-time occlusion culling for models with large occluders
Proceedings of the 1997 symposium on Interactive 3D graphics
Visibility culling using hierarchical occlusion maps
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
ROAMing terrain: real-time optimally adapting meshes
VIS '97 Proceedings of the 8th conference on Visualization '97
Large scale terrain visualization using the restricted quadtree triangulation
Proceedings of the conference on Visualization '98
Smooth view-dependent level-of-detail control and its application to terrain rendering
Proceedings of the conference on Visualization '98
Interactive display of very large textures
Proceedings of the conference on Visualization '98
Conservative volumetric visibility with occluder fusion
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
Occlusion horizons for driving through urban scenery
I3D '01 Proceedings of the 2001 symposium on Interactive 3D graphics
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
Hierarchical Visibility in Terrains
Proceedings of the Eurographics Workshop on Rendering Techniques '97
Real-Time Occlusion Culling with a Lazy Occlusion Grid
Proceedings of the 12th Eurographics Workshop on Rendering Techniques
Hierarchical Visibility Culling with Occlusion Trees
CGI '98 Proceedings of the Computer Graphics International 1998
Voxel column culling: occlusion culling for large terrain models
EGVISSYM'01 Proceedings of the 3rd Joint Eurographics - IEEE TCVG conference on Visualization
Feature-Based Visibility-Driven CLOD for Terrain
PG '03 Proceedings of the 11th Pacific Conference on Computer Graphics and Applications
Visibility culling for interactive dynamic scenes
Integrated image and graphics technologies
An efficient algorithm for real-time 3D terrain walkthrough
ICCSA'03 Proceedings of the 2003 international conference on Computational science and its applications: PartIII
Six degrees of freedom incremental occlusion horizon culling method for urban environments
ISVC'07 Proceedings of the 3rd international conference on Advances in visual computing - Volume Part I
Proceedings of Graphics Interface 2011
Alternation of levels-of-detail construction and occlusion culling for terrain rendering
CIS'04 Proceedings of the First international conference on Computational and Information Science
Perception-Guided simplification for real time navigation of very large-scale terrain environments
ICCSA'06 Proceedings of the 6th international conference on Computational Science and Its Applications - Volume Part I
Practical algorithm for unlimited scale terrain rendering
CSCC'11 Proceedings of the 2nd international conference on Circuits, Systems, Communications & Computers
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We present a technique to perform occlusion culling for hierarchical terrains at run-time. The algorithm is simple to implement and requires minimal pre-processing and additional storage, yet leads to 2-4 times improvement in framerate for views with high degrees of occlusion. Our method is based on the well-known occlusion horizon algorithm. We show how to adapt the algorithm for use with hierarchical terrains. The occlusion horizon is constructed as the terrain is traversed in an approximate front to back ordering. Regions of the terrain are compared to the horizon to determine when they are completely occluded from the viewpoint. Culling these regions leads to significant savings in rendering.