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An Effective 3D Ear Acquisition System

Yahui Liu, Guangming Lu, David Zhang, Berta Alsina
2015 PLoS ONE  
In this paper, we present a novel method of 3D ear acquisition system by using triangulation imaging principle, and the experiment results show that this design is efficient and can be used for ear recognition  ...  Also, the ear has a relatively stable structure that does not change much with the age and facial expressions.  ...  Analyzed the data: YL. Wrote the paper: YL GL DZ.  ... 
doi:10.1371/journal.pone.0129439 pmid:26061553 pmcid:PMC4464888 fatcat:j47uu2yprbdwdllrhjwhjlwqta

Omnidirectional dense large-scale mapping and navigation based on meaningful triangulation

Alberto Pretto, Emanuele Menegatti, Enrico Pagello
2011 2011 IEEE International Conference on Robotics and Automation  
The key idea is to use a guess of the triangle mesh subdivision based on a constrained Delaunay triangulation built according to a set of point features and edgelet features extracted from the image.  ...  In this work, we propose a robust and efficient method to build dense 3D maps, using only the images grabbed by an omnidirectional camera.  ...  Stefano Soatto for the comments and fruitful discussions on this work. This research was supported by a grant of the University of Padova.  ... 
doi:10.1109/icra.2011.5980206 dblp:conf/icra/PrettoMP11 fatcat:2hecdy7zlvdltaas74cbgyutjm

Beta-connection

Luis Gustavo Nonato, Alex Jesus Cuadros-Vargas, Rosane Minghim, Maria Cristina F. De Oliveira
2005 ACM Transactions on Graphics  
Despite the significant evolution of techniques for 3D reconstruction from planar cross sections, establishing the correspondence of regions in adjacent slices remains an important issue.  ...  We show that from the 3D Delaunay triangulation, it is possible to derive a distance measure amongst regions lying in adjacent slices.  ...  Barequet, from the Technion Israel Institute of Technology, for making available the blood vessel data used to generate the figures in the results section.  ... 
doi:10.1145/1095878.1095879 fatcat:kcbap3tqs5glzoan2ryohhv7qq

A fast interactive reverse-engineering system

C.V. Beccari, E. Farella, A. Liverani, S. Morigi, M. Rucci
2010 Computer-Aided Design  
We propose an active stereo acquisition system, which makes use of two infrared cameras and a wireless active-pen device, supported by a reconstruction method based on subdivision surfaces.  ...  Interactive 3D input device a b s t r a c t A new method of reverse engineering for fast, simple and interactive acquisition and reconstruction of a virtual three-dimensional (3D) model is presented.  ...  Giulio Casciola and Prof. Luca Benini for helpful discussions, valuable comments and suggestions, and Marco Benocci for his technical support during the development of the project.  ... 
doi:10.1016/j.cad.2010.06.001 fatcat:5gxmi2k4ynax7ipumkbfosk6fy

A functional framework for Web-based information visualization systems

M. Bender, R. Klein, A. Disch, A. Ebert
2000 IEEE Transactions on Visualization and Computer Graphics  
In this paper, we propose a functional developer's framework for general Webbased visualization systems which makes intelligent use of application specific software and hardware components on the server  ...  Furthermore, the rapid development of the medium World Wide Web coming along with state-of-the-art internet programming techniques led to a trend toward more generally usable visualization systems.  ...  Visualization and Rendering Modules Today, VRML 2.0 and Java 3D are the employed standard techniques for displaying three-dimensional data on the client's side, but these techniques are the subject of  ... 
doi:10.1109/2945.841118 fatcat:i4ln7x3hx5gyrec7df3ws2n3uq

A texture-mapping approach for the compression of colored 3D triangulations

Marc Soucy, Guy Godin, Marc Rioux
1996 The Visual Computer  
We present an algorithm that constructs compact and realistic descriptions of colored 3D objects using texture mapping on compressed triangulations.  ...  We describe the algorithm for the rapid and efficient construction of a texture map for compressed triangulations of arbitrary topology.  ...  Cournoyer and R. Baribeau for acquiring and preprocessing the color range images, as well as A. Rivard for useful discussions.  ... 
doi:10.1007/s003710050082 fatcat:yk24ocxtdjdt3ce5s4otn5fbiq

Real-Time Reconstruction of Wavelet-Encoded Meshes for View-Dependent Transmission and Visualization

P. Gioia, O. Aubault, C. Bouville
2004 IEEE transactions on circuits and systems for video technology (Print)  
The decorrelating power and space/scale localization of wavelets enable efficient compression of arbitrary meshes as well as progressive and local reconstruction.  ...  It enables fast, homogeneous accommodation and suppression of wavelet coefficients at any level of subdivision, with time complexity independent of the size of the reconstructed mesh.  ...  based on arbitrary subdivision schemes for use of the same functionalities. the demonstration of how simple client cache, server ordering of data and backchannel use can optimize the data transmission  ... 
doi:10.1109/tcsvt.2004.830672 fatcat:ktlllfrebrhonkfc3q3aur3o4y

A Generic Programming Approach to Multiresolution Spatial Decompositions [chapter]

Vinícius Mello, Luiz Velho, Paulo Roma Cavalcanti, Cláudio T. Silva
2003 Mathematics and Visualization  
Finally, we discuss applications of the BMT to visualization of volumetric datasets.  ...  From a set of simple and necessary requirements, we arrive at the Binary Multitriangulation (BMT) concept. We also describe a data structure that models the BMT concept in its full generality.  ...  A more interesting example of the use of our framework is our system for the heirarchical approximation and rendering of 3D scalar functions (see [20] for a survey).  ... 
doi:10.1007/978-3-662-05105-4_18 fatcat:qjdl7owinbbdhnwz4bhwi4k3am

Comparison of two image-space subdivision algorithms for Direct Volume Rendering on distributed-memory multicomputers [chapter]

Egemen Tanin, Tahsin M. Kurç, Cevdet Aykanat, Bülent Özgüç
1996 Lecture Notes in Computer Science  
Direct Volume Rendering (DVR) is a powerful technique for visualizing volumetric data sets. However, it involves intensive computations.  ...  In addition, most of the volumetric data sets consist of large number of 3D sampling points. Therefore, visualization of such data sets also requires large computer memory space.  ...  One of the approaches used in direct volume rendering for visualizing these 3D voxel based data sets is Raycasting, which is the basis of this research.  ... 
doi:10.1007/3-540-60902-4_53 fatcat:hetpwfmztncnnmfdywu7asct4q

An Adaptive and Hybrid Approach for Revisiting the Visibility Pipeline

Ícaro Lins Leitão da Cunha, Luiz Marcos Garcia Gonçalves
2016 CLEI Electronic Journal  
We propose a hybrid solution that uses a dry structure (in the sense of data reduction), a triangulation of the type J a 1 , to accelerate the task of searching for visible primitives.  ...  We came up with a solution that is useful for realtime, on-line, interactive applications as 3D visualization.  ...  Acknowledgment The authors would like to thank Brazilian sponsoring agencies CNPq and CAPES for the grants ofÍcaro L. L. da Cunha and Luiz M. G. Gonçalves.  ... 
doi:10.19153/cleiej.19.1.8 fatcat:gta22d6c3fgztmliyyp6cavkei

Real-time Terrain Mapping

Tony Bernardin, Eric Cowgil, Ryan Gold, Bernd Hamann, Oliver Kreylos, Marc Herbstritt
2010 Dagstuhl Publications  
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  ...  We use a quadtree-based multiresolution method to be able to render high-resolution terrain mapping data sets of large spatial regions in real time.  ...  The problem of interactive, 3D visualization of large datasets has been previously addressed using multi-resolution and level of detail techniques [8, 7] .  ... 
doi:10.4230/dfu.sciviz.2010.275 dblp:conf/dagstuhl/BernardinCGHK10 fatcat:fmmj5gbfdzgntkdia5bibetkva

Rendering of X3D content on mobile devices with OpenGL ES

Daniele Nadalutti, Luca Chittaro, Fabio Buttussi
2006 Proceedings of the eleventh international conference on 3D web technology - Web3D '06  
The rendering engine of the MobiX3D player supports classic lighting and shading algorithms. We discuss the performance of the player and we apply it to sign language visualization.  ...  The availability of more powerful mobile devices, sometimes equipped with graphics accelerators, is making it easier to experiment with mobile 3D graphics.  ...  Acknowledgements Roberto Ranon and Stefano Burigat provided precious advice during the development of the described work.  ... 
doi:10.1145/1122591.1122594 dblp:conf/vrml/NadaluttiCB06 fatcat:tkx4nhwcsvcchdxvtgtwgssqhi

Survey of semi-regular multiresolution models for interactive terrain rendering

Renato Pajarola, Enrico Gobbetti
2007 The Visual Computer  
We then discuss LOD error metrics and system-level data management aspects of interactive terrain visualization, including dynamic scene management, out-of-core data organization and compression, as well  ...  In this survey, we analyze multi-resolution approaches that exploit a certain semi-regularity of the data. These approaches have produced some of the most efficient systems to date.  ...  Non-conforming and limited adaptivity techniques: tiled blocks and nested regular grids A number of successful large scale terrain visualization systems are based on data structures that do not support  ... 
doi:10.1007/s00371-007-0163-2 fatcat:35bhc4dkp5a4pfobakir37supq

Geometric compression for progressive transmission [article]

Olivier Devillers, Pierre-Maris Gandoin
1999 arXiv   pre-print
The compression of geometric structures is a relatively new field of data compression.  ...  In this article, we describe a compression algorithm whose principle is completely different: the order of the vertices is used to compress their coordinates, and then the topology of the mesh is reconstructed  ...  Thus this technique can be quite powerful if coupled to an efficient statistic modeling of the data to be coded.  ... 
arXiv:cs/9909018v1 fatcat:zi65itacxvdonjzmbpgzfhcuaa

Coarse-grained multiresolution structures for mobile exploration of gigantic surface models

Marcos Balsa Rodríguez, Enrico Gobbetti, Fabio Marton, Alex Tinti
2013 SIGGRAPH Asia 2013 Symposium on Mobile Graphics and Interactive Applications on - SA '13  
Abstract We discuss our experience in creating scalable systems for distributing and rendering gigantic 3D surfaces on web environments and common handheld devices.  ...  By combining CPU and GPU compression technology with our multiresolution data representation, we are able to incrementally transfer, locally store and render with unprecedented performance extremely detailed  ...  Models are courtesy of Stanford University, the Digital Michelangelo Project, and ISTI-CNR.  ... 
doi:10.1145/2543651.2543669 dblp:conf/siggraph/RodriguezGMT13 fatcat:xjqvzc6vkzet5jvewpfd2mc6iy
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