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Displaying 1-26 out of 26 total
An Interactive Local Flattening Operator to Support Digital Investigations on Artwork Surfaces
Found in: IEEE Transactions on Visualization and Computer Graphics
By Nico Pietroni,Corsini Massimiliano,Paolo Cignoni,Roberto Scopigno
Issue Date:December 2011
pp. 1989-1996
Analyzing either high-frequency shape detail or any other 2D fields (scalar or vector) embedded over a 3D geometry is a complex task, since detaching the detail from the overall shape can be tricky. An alternative approach is to move to the 2D space, resol...
 
PhotoCloud: Interactive Remote Exploration of Joint 2D and 3D Datasets
Found in: IEEE Computer Graphics and Applications
By Paolo Brivio,Luca Benedetti,Marco Tarini,Federico Ponchio,Paolo Cignoni,Roberto Scopigno
Issue Date:March 2013
pp. 86-96,c3
PhotoCloud is a real-time client-server system for interactive visualization and exploration of large datasets comprising thousands of calibrated 2D photographs of a scene and a complex 3D description of the scene. The system isn't tailored to any specific...
 
3D Models for Cultural Heritage: Beyond Plain Visualization
Found in: Computer
By Roberto Scopigno, Marco Callieri, Paolo Cignoni, Massimiliano Corsini, Matteo Dellepiane, Federico Ponchio, Guido Ranzuglia
Issue Date:July 2011
pp. 48-55
Digital technologies are transforming the way cultural heritage researchers, archaeologists, and curators work by providing new ways to collaborate, record excavations, and restore artifacts. The first Web extra is a video that highlights the Cenobium proj...
 
Flow-Based Local Optimization for Image-to-Geometry Projection
Found in: IEEE Transactions on Visualization and Computer Graphics
By Matteo Dellepiane,Ricardo Marroquim,Marco Callieri,Paolo Cignoni,Roberto Scopigno
Issue Date:March 2012
pp. 463-474
The projection of a photographic data set on a 3D model is a robust and widely applicable way to acquire appearance information of an object. The first step of this procedure is the alignment of the images on the 3D model. While any reconstruction pipeline...
 
Solid-Texture Synthesis: A Survey
Found in: IEEE Computer Graphics and Applications
By Nico Pietroni, Paolo Cignoni, Miguel Otaduy, Roberto Scopigno
Issue Date:July 2010
pp. 74-89
Solid textures are an efficient way to compactly represent 3D objects' external and internal appearance, providing practical advantages over classic 2D texturing. Two main methods exist for synthesizing solid textures. Procedural methods obtain colors thro...
 
Virtual Inspector: A Flexible Visualizer for Dense 3D Scanned Models
Found in: IEEE Computer Graphics and Applications
By Marco Callieri, Federico Ponchio, Paolo Cignoni, Roberto Scopigno
Issue Date:January 2008
pp. 44-54
Virtual Inspector lets novice users inspect dense 3D models at interactive frame rates on commodity PCs. The system obtains visualization efficiency without sacrificing quality by adopting a continuous level-of-detail representation. Visual Inspector's use...
 
Batched Multi Triangulation
Found in: Visualization Conference, IEEE
By Paolo Cignoni, Fabio Ganovelli, Enrico Gobbetti, Fabio Marton, Federico Ponchio, Roberto Scopigno
Issue Date:October 2005
pp. 27
The Multi Triangulation framework (MT) is a very general approach for managing adaptive resolution in triangle meshes. The key idea is arranging mesh fragments at different resolution in a Directed Acyclic Graph (DAG) which encodes the dependencies between...
 
Visualization and 3D Data Processing in the David Restoration
Found in: IEEE Computer Graphics and Applications
By Marco Callieri, Paolo Cignoni, Fabio Ganovelli, Gaetano Impoco, Claudio Montani, Paolo Pingi, Federico Ponchio, Roberto Scopigno
Issue Date:March 2004
pp. 16-21
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Selective Refinement Queries for Volume Visualization of Unstructured Tetrahedral Meshes
Found in: IEEE Transactions on Visualization and Computer Graphics
By Paolo Cignoni, Leila De Floriani, Paola Magillo, Enrico Puppo, Roberto Scopigno
Issue Date:January 2004
pp. 29-45
<p><b>Abstract</b>- In this paper, we address the problem of the efficient visualization of large irregular volume data sets by exploiting a multiresolution model based on tetrahedral meshes. Multiresolution models, also called Level-Of-D...
 
External Memory Management and Simplification of Huge Meshes
Found in: IEEE Transactions on Visualization and Computer Graphics
By Paolo Cignoni, Claudio Montani, Claudio Rocchini, Roberto Scopigno
Issue Date:October 2003
pp. 525-537
<p><b>Abstract</b>—Very large triangle meshes, i.e., meshes composed of millions of faces, are becoming common in many applications. Obviously, processing, rendering, transmission, and archiving of these meshes are not simple tasks. Mesh ...
 
Visibility based methods and assessment for detail-recovery
Found in: Visualization Conference, IEEE
By Marco Tarini, Paolo Cignoni, Roberto Scopigno
Issue Date:October 2003
pp. 60
In this paper we propose a new method for the creation of normal maps for recovering the detail on simplified meshes and a set of objective techniques to metrically evaluate the quality of different recovering techniques. The proposed techniques, that auto...
 
Planet-Sized Batched Dynamic Adaptive Meshes (P-BDAM)
Found in: Visualization Conference, IEEE
By Paolo Cignoni, Fabio Ganovelli, Enrico Gobbetti, Fabio Marton, Federico Ponchio, Roberto Scopigno
Issue Date:October 2003
pp. 20
We describe an efficient technique for out-of-core management and interactive rendering of planet sized textured terrain surfaces. The technique, called P-Batched Dynamic Adaptive Meshes (P-BDAM), extends the BDAM approach by using as basic primitive a gen...
 
Exploiting Mirrors for Laser Stripe 3D Scanning
Found in: 3D Digital Imaging and Modeling, International Conference on
By Andrea Fasano, Marco Callieri, Paolo Cignoni, Roberto Scopigno
Issue Date:October 2003
pp. 243
This paper proposes and evaluates the use of a mirror for improving the scanning process when using laser-stripe acquisition devices. We propose to exploit mirrors for two different purposes: automatizing the 3D acquisition process and allowing the scannin...
 
Weaver, an automatic texture builder
Found in: 3D Data Processing Visualization and Transmission, International Symposium on
By Marco Callieri, Paolo Cignoni, Claudio Rocchini, Roberto Scopigno
Issue Date:June 2002
pp. 562
<p>Given in input a 3D digital model of a real object and a set of images from different view points, the problem considered is how to build a single texture map which integrates the color info contained in the input images, minimizing redundancy and...
 
Multiresolution Representation and Visualization of Volume Data
Found in: IEEE Transactions on Visualization and Computer Graphics
By Paolo Cignoni, Claudio Montani, Enrico Puppo, Roberto Scopigno
Issue Date:October 1997
pp. 352-369
<p><b>Abstract</b>—A system to represent and visualize scalar volume data at multiple resolution is presented. The system is built on a multiresolution model based on tetrahedral meshes with scattered vertices that can be obtained from an...
 
Speeding Up Isosurface Extraction Using Interval Trees
Found in: IEEE Transactions on Visualization and Computer Graphics
By Paolo Cignoni, Paola Marino, Claudio Montani, Enrico Puppo, Roberto Scopigno
Issue Date:April 1997
pp. 158-170
<p><b>Abstract</b>—The interval tree is an optimally efficient search structure proposed by Edelsbrunner [<ref rid=
 
Field-aligned mesh joinery
Found in: ACM Transactions on Graphics (TOG)
By Luigi Malomo, Nico Pietroni, Paolo Cignoni, Roberto Scopigno
Issue Date:January 2014
pp. 1-12
Mesh joinery is an innovative method to produce illustrative shape approximations suitable for fabrication. Mesh joinery is capable of producing complex fabricable structures in an efficient and visually pleasing manner. We represent an input geometry as a...
     
Artworks narrating a story: a modular framework for the integrated presentation of three-dimensional and textual contents
Found in: Proceedings of the 18th International Conference on 3D Web Technology (Web3D '13)
By Chiara Leoni, Marco Callieri, Matteo Dellepiane, Roberto Scopigno
Issue Date:June 2013
pp. 167-175
The integrated presentation of a 3D model and a descriptive text which is strongly connected to the geometry (and, more in general, of multiple interconnected datasets of different nature) is still problematic. This is often solved by using plugins and/or ...
     
Editorial
Found in: Journal on Computing and Cultural Heritage (JOCCH)
By Roberto Scopigno
Issue Date:July 2012
pp. 1-1
In this article, we present a graphical Computer-Aided Design (CAD) environment for the design, analysis, and layout of Carbon NanoTube (CNT) Field-Effect Transistor (CNFET) circuits. This work is motivated by the fact that such a tool currently does not e...
     
High dynamic range images for enhancing low dynamic range content
Found in: SIGGRAPH Asia 2011 Posters (SA '11)
By Francesco Banterle, Matteo Dellepiane, Roberto Scopigno
Issue Date:December 2011
pp. 1-1
This poster presents a practical system for enhancing the quality of Low Dynamic Range (LDR) videos using High Dynamic Range (HDR) background images. Our technique relies on the assumption that the HDR information is static in the video footage. This assum...
     
Dynamic shading enhancement for reflectance transformation imaging
Found in: Journal on Computing and Cultural Heritage (JOCCH)
By Gianpaolo Palma, Mark Mudge, Massimiliano Corsini, Paolo Cignoni, Roberto Scopigno
Issue Date:September 2010
pp. 1-20
We propose a set of dynamic shading enhancement techniques for improving the perception of details, features, and overall shape characteristics from images created with Reflectance Transformation Imaging (RTI) techniques. Selection of these perceptual enha...
     
SpiderGL: a JavaScript 3D graphics library for next-generation WWW
Found in: Proceedings of the 15th International Conference on Web 3D Technology (Web3D '10)
By Fabio Ganovelli, Federico Ponchio, Marco Di Benedetto, Roberto Scopigno
Issue Date:July 2010
pp. 165-174
Thanks to the WebGL graphics API specification for the JavaScript programming language, the possibility of using the GPU capabilities in a web browser without the need for an ad-hoc plug-in is now coming true. This paper introduces SpiderGL, a JavaScript l...
     
Adaptive TetraPuzzles: efficient out-of-core construction and visualization of gigantic multiresolution polygonal models
Found in: ACM SIGGRAPH ASIA 2008 courses (SIGGRAPH Asia '08)
By Enrico Gobbetti, Fabio Ganovelli, Fabio Marton, Federico Ponchio, Paolo Cignoni, Roberto Scopigno
Issue Date:December 2008
pp. 1-8
We describe an efficient technique for out-of-core construction and accurate view-dependent visualization of very large surface models. The method uses a regular conformal hierarchy of tetrahedra to spatially partition the model. Each tetrahedral cell cont...
     
Adaptive tetrapuzzles: efficient out-of-core construction and visualization of gigantic multiresolution polygonal models
Found in: ACM Transactions on Graphics (TOG)
By Enrico Gobbetti, Fabio Ganovelli, Fabio Marton, Federico Ponchio, Paolo Cignoni, Roberto Scopigno
Issue Date:August 2004
pp. 796-803
We describe an efficient technique for out-of-core construction and accurate view-dependent visualization of very large surface models. The method uses a regular conformal hierarchy of tetrahedra to spatially partition the model. Each tetrahedral cell cont...
     
Protected interactive 3D graphics via remote rendering
Found in: ACM Transactions on Graphics (TOG)
By David Koller, Giuseppe Croccia, Marc Levoy, Marco Tarini, Michael Turitzin, Paolo Cignoni, Roberto Scopigno
Issue Date:August 2004
pp. 695-703
Valuable 3D graphical models, such as high-resolution digital scans of cultural heritage objects, may require protection to prevent piracy or misuse, while still allowing for interactive display and manipulation by a widespread audience. We have investigat...
     
Multiresolution modeling and visualization of volume data based on simplicial complexes
Found in: Proceedings of the 1994 symposium on Volume visualization (VVS '94)
By Claudio Montani, Enrico Puppo, Leila De Floriani, Paolo Cignoni, Roberto Scopigno
Issue Date:October 1994
pp. 19-26
From the Coliseum in Rome to the verdant landscape of the Loire Valley, the world's cultural heritage has withstood the text of time. Today though, the pace of progress --- from urban sprawl to pollution, neglect, conflict, and even tourism --- threatens t...
     
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