19,392 Hits in 5.8 sec

A Flexible Multimodal Sole Sensor for Legged Robot Sensing Complex Ground Information during Locomotion

Yingtian Xu, Ziya Wang, Wanjun Hao, Wenyu Zhao, Waner Lin, Bingchen Jin, Ning Ding
2021 Sensors  
terrains, and slippery surfaces.  ...  To evaluate the effectiveness and adaptability in different environments, the multimodal sensor was mounted on one of the quadruped robot's feet and one of the human feet then traversed through different  ...  During the 5th step on floor pad one, from the concrete to the sponge surface, slippage happened due to the sudden texture and deformation change.  ... 
doi:10.3390/s21165359 pmid:34450801 pmcid:PMC8399010 fatcat:2fa673pi7vc2zk7tl4g5trpyhu

Visual Analysis of UrbanTerrain Dynamics [chapter]

Thomas Butkiewicz, Remco Chang, William Ribarsky, Zachary Wartell
2008 Understanding Dynamics of Geographic Domains  
The approach can also be generalized to fully 3D dynamic terrain. We then focus on specific 3D urban models with tens to hundreds of thousands of structures and how to organize them.  ...  This leads to ideas about urban morphology and how to effectively organize the dynamics of urban environments.  ...  We also thank Holly Rushmeier of Yale University and Gabriel Taubin of Brown University for fruitful discussions.  ... 
doi:10.1201/9781420060355.ch9 fatcat:j4jmue5j2vagbiwyv37q7fqd7a

Real-time Photorealistic Visualisation of Large-scaleMultiresolution Terrain Models

Anupam Agrawal, R.C. Joshi, M. Radhakrishna
2007 Defence Science Journal  
static objects such as buildings, trees, etc and to overlay polyline vector objects such as roads on top of the terrain surface.  ...  The terrain rendering is accomplished by an efficient dynamic multiresolution viewdependent level-of-detail mesh simplification algorithm.  ...  boundaries, etc on top of the terrain surface.  ... 
doi:10.14429/dsj.57.1742 fatcat:greuecis7rgdhfk34utqqcntku

Real-Time Terrain Modeling Using CPU-GPU Coupled Computation

Adrien Bernhardt, Andre Maximo, Luiz Velho, Houssam Hnaidi, Marie-Paule Cani
2011 2011 24th SIBGRAPI Conference on Graphics, Patterns and Images  
One interesting feature of our tool is that terrain primitives can be interactively manipulated similarly to primitives in vector-graphics tools.  ...  In the CPU, the quadtree data structure (middle) controls the quadrilateral patches sent to the GPU.  ...  ACKNOWLEDGMENTS We would like to acknowledge the grant of the first author provided by the PPF Interactions Multimodales, and the grant of the second author provided by Brazilian agency CNPq (National  ... 
doi:10.1109/sibgrapi.2011.28 dblp:conf/sibgrapi/BernhardtMVHC11 fatcat:64odjpjwh5ao5gbqojx7mrzwm4

Ida and Dactyl: Spectral Reflectance and Color Variations

J. Veverka, P. Helfenstein, P. Lee, P. Thomas, A. McEwen, M. Belton, K. Klaasen, T.V. Johnson, J. Granahan, F. Fanale, P. Geissler, J.W. Head III
1996 Icarus (New York, N.Y. 1962)  
Qualitatively, the color-albedo from, that of Terrain B on Ida.  ...  Because of these trends, it is less likely distinct spectra.  ...  nor is it evident how the spectral reflectances of either Terrain A or B could be (1) The definite correlation between fresh craters and modified to look like Dactyl solely by a change in texture.  ... 
doi:10.1006/icar.1996.0037 fatcat:slxqvz4wejbhdarbtdshit4ze4

Implementation Technologies and Procedure of the Real-time Interactive Roaming System of Virtual City

Pu Liu
2013 Open Automation and Control Systems Journal  
This paper analyzes the development, features and technology of virtual reality and the virtual city roaming and its applications and advantages in urban planning; then focus on key technologies and how  ...  Virtual reality is a hot research topic in computer science and the introduction of virtual roaming to the field of urban planning provides a new means for urban design.  ...  water and irregular objects or simulations not only have complicated logical structure, but also change dynamically.  ... 
doi:10.2174/1874444301305010021 fatcat:kw7e2zsvsfbcxc5sfwbnv3okjm

Visual speed adaptation for improved sensor coverage in a multi-vehicle survey mission

Arturo Gomez Chavez, Max Pfingsthorn, Ravi Rathnam, Andreas Birk
2016 OCEANS 2016 - Shanghai  
of the terrain.  ...  The effectiveness of the methods is shown using visual stereo survey data.  ...  dexterous ROV operations in presence of communication latencies (DexROV)".  ... 
doi:10.1109/oceansap.2016.7485710 fatcat:u3eseckhmbd73i3ir5omzcylbu

Interactive landscape visualization using GPU ray casting

Stephan Mantler, Stefan Jeschke
2006 Proceedings of the 4th international conference on Computer graphics and interactive techniques in Australasia and Southeast Asia - GRAPHITE '06  
Given a height field of a terrain and a topographic map or similar data as input, the vegetation cover is extracted and stored on top of the height field in a preprocess, enhancing the terrain with forest  ...  Abstract This paper demonstrates the simple yet effective usage of height fields for interactive landscape visualizations using a ray casting approach implemented in the pixel shader of modern graphics  ...  Acknowledgements Terrain and vegetation data courtesy of the Nationalpark Hohe Tauern administration. LIDAR scan data courtesy of Sorin Popescu, Texas A&M University Spatial Sciences Laboratory.  ... 
doi:10.1145/1174429.1174448 dblp:conf/graphite/MantlerJ06 fatcat:hruj26tj6rcpdmoqesdsud463e

Integrated Multiresolution Geometry and Texture Models for Terrain Visualization [article]

Konstantin Baumann, Jürgen Döllner, Klaus Hinrichs
2000 EUROVIS 2005: Eurographics / IEEE VGTC Symposium on Visualization  
In this paper, an approach for integrating multiresolution representations of terrain geometry and terrain texture data is presented.  ...  Multiple texture hierarchies, which may represent different thematic information layers, can be bound to one terrain model.  ...  The visual effects of LOD changes can be minimized by topographic textures because the constant shading hides discontinuities in the geometric representation during a change in the LOD.  ... 
doi:10.2312/vissym/vissym00/157-166 fatcat:25x6oqpe4zbvzgomt6rvbad77q

Design and Implementation of Flight Visual Simulation System [article]

Feng Tian, Wenjian Chai, Chuanyun Wang, Xiaoping Sun
2012 arXiv   pre-print
The changes of aircraft flight attitude in visual system are controlled by real-time calculation of aircraft aerodynamic and dynamic equations and flight simulation effect is enhanced by this kind of control  ...  screen effect.  ...  Flight motion simulation effect can be greatly improved by relative mathematical models of aircraft flight dynamics. In this paper, the FVSS is based on two assumptions: a.  ... 
arXiv:1212.0365v1 fatcat:qlgwrfvqb5gdflqxjnkzkfbwka

Indirection mapping for quasi-conformal relief texturing

Morgan McGuire, Kyle Whitson
2008 Proceedings of the 2008 symposium on Interactive 3D graphics and games - SI3D '08  
We pre-warp structured textures by the inverse of the indirection map to maintain their appearance. Our process gives approximately uniform texture resolution on all surfaces.  ...  Noisy textures like grass and stucco can be used with indirection mapped (which is convenient when texturing terrain.)  ...  Depending on the nature of the material texture maps, the authoring process may change. We consider three cases: unstructured, structured, and paletted-unstructured material texture maps.  ... 
doi:10.1145/1342250.1342280 dblp:conf/si3d/McGuireW08 fatcat:rhqd7pe64fazhni3ilz45aq7iu

Extracting Terrain Texture Features for Landform Classification Using Wavelet Decomposition

Yuexue Xu, Shengjia Zhang, Jinyu Li, Haiying Liu, Hongchun Zhu
2021 ISPRS International Journal of Geo-Information  
, is executed to dissect the multiscale structural features of the terrain texture.  ...  To obtain the appropriate analysis scale of landform structure feature, and then carry out landform classification using the terrain texture, the texture feature is introduced for reflecting landform spatial  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/ijgi10100658 fatcat:dpwlo2ta4zhclo3iwgcprsjcj4

Real-time Terrain Mapping

Tony Bernardin, Eric Cowgil, Ryan Gold, Bernd Hamann, Oliver Kreylos, Marc Herbstritt
2010 Dagstuhl Publications  
The main strength of our system is the combination of interactive rendering and interactive mapping directly onto the 3D surface, with the ability to navigate the terrain and to change viewpoints arbitrarily  ...  Our system visualizes the surface of the Earth as a 3D surface generated from a DEM, with a color texture generated from a registered multispectral image and vector-based mapping elements draped over it  ...  General Handling Geometric lines, our display primitives, can only accurately follow flat surfaces, like those defined by the triangles of the 3D terrain representation.  ... 
doi:10.4230/dfu.sciviz.2010.275 dblp:conf/dagstuhl/BernardinCGHK10 fatcat:fmmj5gbfdzgntkdia5bibetkva

Rendering of 3D Dynamic Virtual Environments

Emilio Ferrara, Salvatore Catanese, Giacomo Fiumara, Francesco Pagano
2011 Proceedings of the 4th International ICST Conference on Simulation Tools and Techniques  
of terrain, water and vegetation, the reproduction of sounds and atmospheric agents.  ...  Concluding, we devised a showcase demo which reproduces a dynamic 3D environment, including some particular effects: the alternation of day and night infuencing the lighting of the scene, the rendering  ...  , due to the parallax effect, this technique improves the realism of texturing flat surfaces, giving the optic illusion of depth.  ... 
doi:10.4108/icst.simutools.2011.245524 dblp:conf/simutools/CataneseFFP11 fatcat:vpt2cxdtkjgprhid3cxghv67li

Incidence of soil surface crust types in semi-arid Niger

F Graef, K Stahr
2000 Soil & Tillage Research  
Their type and structure are in¯uenced by soil texture, vegetation cover, erosion and deposition effects of wind and water.  ...  The soil surface crusts were shown to depend also on speci®c terrain factors including land use type and intensity, and terrain type and position.  ...  Their type and structure are in¯uenced by (a) soil texture, (b) erosion and deposition effects by wind and water, and (c) vegetation cover.  ... 
doi:10.1016/s0167-1987(00)00117-3 fatcat:kfjpqxyduzgfvmthr3lvdawo5a
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