Method for Generating 3D-Viewing Window for Web-Based E-Catalog

2004 ◽  
Author(s):  
Deuk-Hee Lee ◽  
Sehyung Park ◽  
Sungdo Ha ◽  
Yunyeong Lee
Keyword(s):  
New Products ◽  
Three Dimensional ◽  
3D Models ◽  
Web Based ◽  
Template Model ◽  
3D Object ◽  
3D Objects ◽  
Electronic Catalogs ◽  
Cad Models ◽  
The Way

This paper presents a framework-based procedure to generate three-dimensional electronic catalogs (3d e-catalogs), which link three-dimensional viewing windows (3d viewing windows) to e-catalogs. The 3d viewing windows include the three-dimensional interactive and event-driven objects (3d objects) of products for e-catalogs; the 3d viewing windows view and manipulate the 3d objects. The framework provides users with the template models of 3d viewing windows and 3d objects; the template model of a 3d viewing window is defined in HTML and the template model of a 3d object is defined in VRML. Users will specify the components of the template models, and complete the 3d viewing windows including the 3d objects of the new products to be displayed in 3d e-catalogs. In addition, the framework presents the way to get hierarchical 3d models from CAD models of products.

Placing Three-Dimensional Models in an Uncalibrated Single Image of an Architectural Scene

2004 ◽  
Vol 13 (6) ◽  
pp. 692-707 ◽  
Author(s):  
Sara Keren ◽  
Ilan Shimshoni ◽  
Ayellet Tal
Keyword(s):  
Augmented Reality ◽  
Three Dimensional ◽  
3D Models ◽  
Automatic Extraction ◽  
Single Image ◽  
Vanishing Points ◽  
Correct Position ◽  
3D Objects ◽  
Position And Orientation ◽  
Three Dimensional Models

This paper discusses the problem of inserting 3D models into a single image. The main focus of the paper is on the accurate recovery of the camera's parameters, so that 3D models can be inserted in the “correct” position and orientation. The paper addresses two issues. The first is an automatic extraction of the principal vanishing points from an image. The second is a theoretical and an experimental analysis of the errors. To test the concept, a system that “plants” virtual 3D objects in the image was implemented. It was tested on many indoor augmented-reality scenes. Our analysis and experiments have shown that errors in the placement of the objects are unnoticeable.

Performance of 3D computers and 3D printed models as a fundamental means for spatial engineering information visualization

2014 ◽  
Vol 41 (10) ◽  
pp. 869-877 ◽  
Author(s):  
Gabriel B. Dadi ◽  
Timothy R.B. Taylor ◽  
Paul M. Goodrum ◽  
William F. Maloney
Keyword(s):  
Computer Aided Design ◽  
Three Dimensional ◽  
3D Models ◽  
The Body ◽  
Information Modeling ◽  
Simple Task ◽  
Great Opportunity ◽  
Cad Models ◽  
Engineering Information ◽  
3D Printed

Engineering information delivery can be a source of inefficient communication of design, leading to construction rework and lower worker morale. Due to errors, omissions, and misinterpretations, there remains a great opportunity to improve the traditional documentation of engineering information that craft professionals use to complete their work. Historically, physical three dimensional (3D) models built by hand provided 3D physical representations of the project to assist in sequencing, visualization, and planning of critical construction activities. This practice has greatly diminished since the adoption of 3D computer-aided design (CAD) and building information modeling technologies. Recently, additive manufacturing (a.k.a. 3D printing) technologies have allowed for three dimensional printing of 3D CAD models. A cognitive experiment was established to measure the effectiveness of 2D drawings, a 3D computer model, and a 3D printed model in delivering engineering information to an end-user are scientifically measured. The 3D printed model outperformed the 2D drawings and 3D computer interface in productivity measures. This paper’s primary contribution to the body of knowledge is identification of how different mediums of engineering information influence the performance of a simple task execution.

scholarly journals Delivering and using 3D models on the web: are we ready?

2017 ◽  
Vol 8 (17) ◽  
pp. 1 ◽  
Author(s):  
Roberto Scopigno ◽  
Marco Callieri ◽  
Matteo Dellepiane ◽  
Federico Ponchio ◽  
Marco Potenziani
Keyword(s):  
Three Dimensional ◽  
3D Models ◽  
Main Channel ◽  
High Quality ◽  
Specific Domain ◽  
Web Based ◽  
3D Data ◽  
Very High ◽  
Web Publishing ◽  
The Web

<p class="VARKeywords">Digital technologies are now mature for producing high quality digital replicas of Cultural Heritage (CH) assets. The research results produced in the last decade ignited an impressive evolution and consolidation of the technologies for acquiring high-quality digital three-dimensional (3D) models, encompassing both geometry and color. What remains still an open problem is how to deliver those data and related knowledge to our society. The web is nowadays the main channel for the dissemination of knowledge. Emerging commercial solutions for web-publishing of 3D data are consolidating and becoming a de-facto standard for many applications (e-commerce, industrial products, education, etc.). In this framework, CH is a very specific domain, requiring highly flexible solutions. Some recent experiences are presented, aimed at providing a support to the archival of archaeological 3D data, supporting web-based publishing of very high-resolution digitization results and finally enabling the documentation of complex restoration actions. All those examples have been recently implemented on the open-source 3D Heritage Online Presenter (3DHOP) platform, developed at CNR-ISTI.</p>

scholarly journals SHARING ON WEB 3D MODELS OF ANCIENT THEATRES. A METHODOLOGICAL WORKFLOW

2016 ◽  
Vol XLI-B2 ◽  
pp. 483-490 ◽  
Author(s):  
A. Scianna ◽  
M. La Guardia ◽  
M. L. Scaduto
Keyword(s):  
Methodological Approach ◽  
Three Dimensional ◽  
Spatial Models ◽  
3D Models ◽  
Web Based ◽  
Web 3D ◽  
The One ◽  
User Friendly ◽  
Geospatial Web Services ◽  
The Web

In the last few years, the need to share on the Web the knowledge of Cultural Heritage (CH) through navigable 3D models has increased. This need requires the availability of Web-based virtual reality systems and 3D WEBGIS. In order to make the information available to all stakeholders, these instruments should be powerful and at the same time very user-friendly. However, research and experiments carried out so far show that a standardized methodology doesn’t exist. All this is due both to complexity and dimensions of geometric models to be published, on the one hand, and to excessive costs of hardware and software tools, on the other. In light of this background, the paper describes a methodological approach for creating 3D models of CH, freely exportable on the Web, based on HTML5 and free and open source software. HTML5, supporting the WebGL standard, allows the exploration of 3D spatial models using most used Web browsers like Chrome, Firefox, Safari, Internet Explorer. The methodological workflow here described has been tested for the construction of a multimedia geo-spatial platform developed for three-dimensional exploration and documentation of the ancient theatres of Segesta and of Carthage, and the surrounding landscapes. The experimental application has allowed us to explore the potential and limitations of sharing on the Web of 3D CH models based on WebGL standard. Sharing capabilities could be extended defining suitable geospatial Web-services based on capabilities of HTML5 and WebGL technology.

scholarly journals Object Reconstruction from 2D Drawing sketch to 3D Object

2016 ◽  
Vol 5 (3) ◽  
pp. 119-126 ◽  
Author(s):  
Rossi Passarella ◽  
Osvari Arsalan
Keyword(s):  
Personal Computer ◽  
Early Phase ◽  
3D Models ◽  
View Point ◽  
Object Reconstruction ◽  
3D Object ◽  
Orthographic Projection ◽  
2D Drawing ◽  
The Way

Design engineer in the early phase of building up another product is  typically using a freehand sketching to communicate or illustrate the idea in the form of orthographic projection. This orthographic projection is based on viewpoint. A translation from 2D drawing  view point to 3D models is needed to help engineer to imagine the product preview in 3D. This procedure includes a tedious, so that automation is needed. The way to deal with this reproduction issue begin straightforwardly from 2D freehand portraying, by using the camera, the 2D drawing is captured and then transferred to a Personal Computer. Inside the computer, the image is processed with  filtering to find the view point zones. The view point zone than separate to 3 zones, each zone consists of the pixel coordinate. This coordinates are used to generated and processing of 3D voxel Image according to the form of geometries. A case study is presented in order to emphasize and discuss the proposed method

scholarly journals SHARING ON WEB 3D MODELS OF ANCIENT THEATRES. A METHODOLOGICAL WORKFLOW

2016 ◽  
Vol XLI-B2 ◽  
pp. 483-490 ◽  
Author(s):  
A. Scianna ◽  
M. La Guardia ◽  
M. L. Scaduto
Keyword(s):  
Methodological Approach ◽  
Three Dimensional ◽  
Spatial Models ◽  
3D Models ◽  
Web Based ◽  
Web 3D ◽  
The One ◽  
User Friendly ◽  
Geospatial Web Services ◽  
The Web

In the last few years, the need to share on the Web the knowledge of Cultural Heritage (CH) through navigable 3D models has increased. This need requires the availability of Web-based virtual reality systems and 3D WEBGIS. In order to make the information available to all stakeholders, these instruments should be powerful and at the same time very user-friendly. However, research and experiments carried out so far show that a standardized methodology doesn’t exist. All this is due both to complexity and dimensions of geometric models to be published, on the one hand, and to excessive costs of hardware and software tools, on the other. In light of this background, the paper describes a methodological approach for creating 3D models of CH, freely exportable on the Web, based on HTML5 and free and open source software. HTML5, supporting the WebGL standard, allows the exploration of 3D spatial models using most used Web browsers like Chrome, Firefox, Safari, Internet Explorer. The methodological workflow here described has been tested for the construction of a multimedia geo-spatial platform developed for three-dimensional exploration and documentation of the ancient theatres of Segesta and of Carthage, and the surrounding landscapes. The experimental application has allowed us to explore the potential and limitations of sharing on the Web of 3D CH models based on WebGL standard. Sharing capabilities could be extended defining suitable geospatial Web-services based on capabilities of HTML5 and WebGL technology.

scholarly journals Rapid and Blind Watermarking Approach of the 3D Objects Using QR Code Images for Securing Copyright

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Hanan S. Al-Saadi ◽  
Ahmed Elhadad ◽  
A. Ghareeb
Keyword(s):  
Digital Media ◽  
Three Dimensional ◽  
Extraction Process ◽  
Manhattan Distance ◽  
Human Observer ◽  
Qr Code ◽  
3D Object ◽  
3D Objects ◽  
Wide Range ◽  
Code Image

Watermarking techniques in a wide range of digital media was utilized as a host cover to hide or embed a piece of information message in such a way that it is invisible to a human observer. This study aims to develop an enhanced rapid and blind method for producing a watermarked 3D object using QR code images with high imperceptibility and transparency. The proposed method is based on the spatial domain, and it starts with converting the 3D object triangles from the three-dimensional Cartesian coordinate system to the two-dimensional coordinates domain using the corresponding transformation matrix. Then, it applies a direct modification on the third vertex point of each triangle. Each triangle’s coordinates in the 3D object can be used to embed one pixel from the QR code image. In the extraction process, the QR code pixels can be successfully extracted without the need for the original image. The imperceptibly and the transparency performances of the proposed watermarking algorithm were evaluated using Euclidean distance, Manhattan distance, cosine distance, and the correlation distance values. The proposed method was tested under various filtering attacks, such as rotation, scaling, and translation. The proposed watermarking method improved the robustness and visibility of extracting the QR code image. The results reveal that the proposed watermarking method yields watermarked 3D objects with excellent execution time, imperceptibility, and robustness to common filtering attacks.

scholarly journals The Photogrammetric Survey of the Phoenician and Punic Necropolis of Nora and Three-Dimensional Rendering Tools for Sharing Data

2021 ◽  
Vol 10 (1) ◽  
pp. 17
Author(s):  
Simone Berto ◽  
Filippo Carraro ◽  
Daniele Morabito ◽  
Jacopo Bonetto ◽  
Giuseppe Salemi
Keyword(s):  
Research Team ◽  
Three Dimensional ◽  
3D Models ◽  
Point Of View ◽  
Archaeological Survey ◽  
Web Based ◽  
Survey Tool ◽  
Testing Ground ◽  
Specific Focus

The hypogea of the Punic necropolis of Nora represented a testing ground for the use of photogrammetry as an archaeological survey tool in a highly critical context, both from the point of view of the survey itself and from the point of view of the understanding and dissemination of the underground evidence. The study describes the acquisition techniques and the tools used to share the 3D models, both among the research team and with external users, with a specific focus on web-based tools (Potree).

scholarly journals Design and Development of a 3D Digital Cadastre Visualization Prototype

2018 ◽  
Vol 7 (10) ◽  
pp. 384 ◽  
Author(s):  
Davood Shojaei ◽  
Hamed Olfat ◽  
Abbas Rajabifard ◽  
Mark Briffa
Keyword(s):  
Cross Sections ◽  
Three Dimensional ◽  
Ground Surface ◽  
3D Models ◽  
Property Development ◽  
Web Based ◽  
Complex Spaces ◽  
Ownership Rights ◽  
Story Building

The massive property development of high-rises and complex structures above and below the ground surface in cities indicates the lack of land and high demand to use spaces. However, the existing land and property administration systems are mainly two dimensional and not capable of efficiently managing these complex spaces. As ownership rights on plans are recorded in paper or PDF, understanding these rights and making effective decisions and analyses can be difficult without having experience in the art of reading and interpreting plan information. This paper attempts to address these issues by presenting a prototype for visualizing three-dimensional land and property information. The aim of this prototype is to illustrate and communicate the requirements and benefits of a 3D digital cadastre platform. The prototype is a web-based application and includes functionality to display both legal and physical data, interact with 3D models, display administrative data, identify objects and search objects, visualize cross-sections, and undertake measurements in 3D. For this prototype, a multi-story building was selected as a case study and its 3D model was imported into the prototype to display ownership rights. The prototype was then evaluated by various stakeholders and their feedback was considered for future enhancement.

scholarly journals GEOMATIC ARCHAEOLOGICAL RECONSTRUCTION AND A HYBRID VIEWER FOR THE ARCHAELOGICAL SITE OF CÁPARRA (SPAIN)

2018 ◽  
Vol XLII-2 ◽  
pp. 1105-1111 ◽  
Author(s):  
C. Tejeda-Sánchez ◽  
A. Muñoz-Nieto ◽  
P. Rodríguez-Gonzálvez
Keyword(s):  
Cross Sections ◽  
Low Cost ◽  
Three Dimensional ◽  
3D Models ◽  
Site Survey ◽  
Topographic Survey ◽  
Cad Models ◽  
Close Range ◽  
Archaeological Reconstruction ◽  
Set Up

Visualization and analysis use to be the final steps in Geomatics. This paper shows the workflow followed to set up a hybrid 3D archaeological viewer. Data acquisition of the site survey was done by means of low-cost close-range photogrammetric methods. With the aim not only to satisfy the general public but also the technicians, a large group of Geomatic products has been obtained (2d plans, 3d models, orthophotos, CAD models coming from vectorization, virtual anastylosis, and cross sections). Finally, all these products have been integrated into a three-dimensional archaeological information system. The hybrid archaeological viewer designed allows a metric and quality approach to the scientific analysis of the ruins, improving, thanks to the implementation of a database, and its potential for queries, the benefits of an ordinary topographic survey.

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