11,863 Hits in 5.6 sec

View-dependent fast real-time generating algorithm for large-scale terrain

Hai-liang Jin, Xiao-ping Lu, Hui-jie Liu
2009 Procedia Earth and Planetary Science  
At the same time achieved self-adaptive control for screen-space error tolerance during the terrain fly-through.  ...  a new bottom-up modeling strategy, which constructed simplified terrain triangle mesh globally and updated mesh nodes dynamically.  ...  at one-time, and using real-time update strategy for mesh nodes, effectively improving the structure mesh speed of the terrain model.  ... 
doi:10.1016/j.proeps.2009.09.176 fatcat:rjxoxurayrhwjjsvsz5o53gvca

Level of Detail for Real-Time Volumetric Terrain Rendering [article]

Manuel Scholz, Jan Bender, Carsten Dachsbacher
2013 International Symposium on Vision, Modeling, and Visualization  
In this paper, we present a fast, practical and GPU-friendly level of detail algorithm for large scale volumetric terrain that is specifically designed for real-time rendering applications.  ...  The algorithm can be used with arbitrary volumetric models such as signed distance fields, which can be generated from triangle meshes or discrete volume data sets.  ...  The active front is refined and coarsened in real-time to adapt the mesh resolution to the viewer position.  ... 
doi:10.2312/pe.vmv.vmv13.211-218 dblp:conf/vmv/ScholzBD13 fatcat:gqb3wmeoxfclzgo35b2qcq4jr4

An Efficient Algorithm for Real-Time 3D Terrain Walkthrough [chapter]

M. Hesse, M. L. Gavrilova
2003 Lecture Notes in Computer Science  
The paper presents an efficient algorithm based on ROAM for visualization of large scale terrain models in realtime.  ...  These techniques are incorporated in the visualization software, which allows to achieve more realistic terrain representation and the real-time level of detail reduction.  ...  Acknowledgements Authors would like to express their gratitude to GEOIDE and NSERC granting agencies for their partial support of this project.  ... 
doi:10.1007/3-540-44842-x_76 fatcat:xqqzbe3dunf7bnyml5ched3uuu

Procedural Planetary Multi-resolution Terrain Generation for Games [article]

Ricardo B. D. d'Oliveira, Antonio L. Apolinário Jr
2018 arXiv   pre-print
There are several proposals regarding real-time terrain rendering with multi-resolution models, and there are game engines capable of generating large scale terrains with fixed resolution.  ...  However rendering a terrain is not a trivial task. Their rendering techniques must be optimal for gaming. Specially planetary terrains, which must account for precision and scale conversion.  ...  A virtual terrain can be generated and rendered in different scale levels, there are several proposals regarding real-time terrain rendering with multi-resolution models, and there are game engines capable  ... 
arXiv:1803.04612v1 fatcat:rcu6f2x7nvddhedfrhssvce5qq

Research on Adaptive Triangular Irregular Network for Virtual Battlefield Terrain

Heng Heng Jiang, Xin Yu Chen, Wen Jing Zhang
2013 Applied Mechanics and Materials  
In allusion to the shortcoming of actual triangulated irregular network, an adaptive triangular irregular network is proposed in this paper, and the 3D modeling of the battlefield terrain is built.  ...  Constructing virtual battlefield terrain is a very important subject in military simulation.  ...  Adaptive model for TIN Adaptive recognition algorithm for geometric features should be integrated for adaptive model of TIN while triangular meshes are generated, including adaptive curvature feature and  ... 
doi:10.4028/ fatcat:p7smlgo7czcqpkoytf72j3rcmq

Mix-Subdivision Dynamic Terrain Visualization Algorithm

Xiao Hui Zhao, Bao Di Xie, De Peng Wan, Qing Yun Wang
2013 Advanced Materials Research  
In this paper, a dynamic terrain visualization method based on quadtree and multi-resolution voxel is presented in order to realize the real-time rendering for realistic craters in battlefield.  ...  We also implement the visualization of craters through combining our algorithm with the physical model of craters based on multi-resolution voxel.  ...  We would like to thank Virtual Terrain Project Website where we get good collections of terrain resources.  ... 
doi:10.4028/ fatcat:npf7st2qujgg7propylknon22i

River Networks for Instant Procedural Planets

E. Derzapf, B. Ganster, M. Guthe, R. Klein
2011 Computer graphics forum (Print)  
In Section 5, we outline the adaption algorithm mars [GPMG10, LSWW11]. for real-time rendering.  ...  All images in this paper were generated under real-time conditions at a resolution of 1920×1080 with an edge length of 0.5 pixel for the land and 5 pixels for the water.  ... 
doi:10.1111/j.1467-8659.2011.02052.x fatcat:27nqyk3ssrhqrhsn57diw2iufa

Real-time Photorealistic Visualisation of Large-scaleMultiresolution Terrain Models

Anupam Agrawal, R.C. Joshi, M. Radhakrishna
2007 Defence Science Journal  
A polygonal model of very large terrain data requires a large number of triangles.  ...  This paper describes a novel approach for objects and terrain visualisation by combination of two algorithms, one for terrain data and the other for objects.  ...  This shows the complexity of the real-time rendering of large terrain data sets.  ... 
doi:10.14429/dsj.57.1742 fatcat:greuecis7rgdhfk34utqqcntku

Seamless Rendering of Large Scale Terrain

Bao Song Deng, Tie Qing Deng, Rong Huan Yu, Jia Wei Yu
2012 Advanced Engineering Forum  
If large and detailed, digital terrains can be represented by a huge amount of data and therefore of graphical primitives to render in real-time.  ...  disk, at the same time, a seamless combination algorithm between tiles of terrain and texture was proposed.  ...  In figure 8 we can see that our method shows a good capability with large scale terrain, especially for real-time applications.  ... 
doi:10.4028/ fatcat:ahkz4foj3bdcbggfwwtvo66oea

Solar radiation and shadow modelling with adaptive triangular meshes

G. Montero, J.M. Escobar, E. Rodríguez, R. Montenegro
2009 Solar Energy  
In this work, we propose a numerical model for generating solar radiation maps with the use of 2-D adaptive meshes of triangles.  ...  Moreover, the model takes into account the effect of shadows for each time step, which are detected by analysing the crossing of the trajectory of the shaft of light with the triangles of the mesh.  ...  The authors are grateful to Antonio Ortegón Gallego of the Canary Islands Technolog-ical Institute for providing them with the observational data of solar radiation in its stations for three months of  ... 
doi:10.1016/j.solener.2009.01.004 fatcat:rcj2wat26fcrtf5yldpa4s6rpy

Interactive Procedural Modelling of Coherent Waterfall Scenes

Arnaud Emilien, Pierre Poulin, Marie-Paule Cani, Ulysse Vimont
2014 Computer graphics forum (Print)  
Left: Photo of the real site c Serge Gélabert. Center: Our result after 10 minutes of interactive procedural modeling, starting from a similar terrain model.  ...  exchanges; enforces consistency between the terrain and the flow; and generates detailed geometry, animated textures, and shaders for the waterfalls and their surroundings.  ...  We also thank the infographists, Laura Paiardini and Estelle Charleroy, for their help to design our prototype application.  ... 
doi:10.1111/cgf.12515 fatcat:t6mdiby4frc47bsfcddiekw7zy

Generation of operational maps of global solar irradiation on horizontal plan and of direct normal irradiation from Meteosat imagery by using SOLARMET

E. Cogliani, P. Ricchiazzi, A. Maccari
2008 Solar Energy  
If we consider the three factors of atmospheric attenuation (c) in the model, it will produce real-sky (overcast) radiation values.  ...  In order to maximise the solar radiation collection, many numerical models have been developed.  ...  Nevertheless, they can be also applied to other similar models for generating solar radiation maps.  ... 
doi:10.1016/j.solener.2007.11.002 fatcat:yclwpnx7hzgztpdtz7drydk3cq

An Application of Multiresolution Massive Surface Representations to the Simulation of Asteroid Missions [article]

Giovanni Pintore, Roberto Combet, Enrico Gobbetti, Fabio Marton, Russell Turner
2010 Smart Tools and Applications in Graphics  
We report on a real-time application supporting fast, realistic real-time rendering of asteroid datasets, as well as collision detection and response between the asteroid and prototype robotic surface  ...  Real-time performance is achieved on a commodity platform with giga triangle representations of asteroids 25143 Itokawa and 433 Eros.  ...  Such a terrain model is well-represented by a rapidly adaptive multiresolution data structure.  ... 
doi:10.2312/localchapterevents/italchap/italianchapconf2010/009-016 dblp:conf/egItaly/PintoreCGMT10 fatcat:htg26alq2fgvxcfqg2yocjsoay

A Multilevel Terrain Rendering Method Based on Dynamic Stitching Strips

Liwei Zhang, Jiangfeng She, Junzhong Tan, Biao Wang, Yuchang Sun
2019 ISPRS International Journal of Geo-Information  
By leveraging the great power of GPU, high quality terrain models with rich details can be rendered in real time, although the problem of popping artefacts still persists.  ...  Many terrain rendering methods use the strategy of Level of Detail (LOD) to create adaptive terrain models, but the transition between different levels is usually not handled well, which may cause popping  ...  Thus, an adaptive tessellation mesh was achieved and the data amount processed in real time was reduced without notably lowering the visual effect.  ... 
doi:10.3390/ijgi8060255 fatcat:dgx2bzvr4rezjpzxaezib55hdy

An adaptive solar radiation numerical model

F. Díaz, G. Montero, J.M. Escobar, E. Rodríguez, R. Montenegro
2012 Journal of Computational and Applied Mathematics  
The terrain surface is taking into account using 2-D adaptive meshes of triangles [1] , which are constructed using a refinement/derefinement procedure in accordance with the variations of terrain surface  ...  For this purpose, the effect of shadows is considered in each time step.  ... 
doi:10.1016/ fatcat:wb6agsclevg3lkgvqx3tfwrff4
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