Geometric Simplification to Stream 3D Models for Collaborative Product Design

2005 ◽  
Author(s):  
W. D. Li ◽  
W. F. Lu ◽  
Y. L. Cai
Keyword(s):  
Collaborative Design ◽  
3D Models ◽  
The Internet ◽  
Collaborative Product Design ◽  
Promising Solution ◽  
Web 3D ◽  
Design Systems ◽  
3D Streaming ◽  
Edge Collapse ◽  
Collapse Process

One of the challenging problems that hinder the development of collaborative design systems is the contradiction of large CAD files and the limited speed to share them over the Internet and Web. 3D streaming technique, which can allow effective and efficient dispatch and access of large-volume CAD data as a series of patched streams across the Internet, provides a promising solution to overcome the obstacle. Geometric simplification (or decimation) of 3D models is the key algorithm to realize the streaming technique. In this paper, a new geometric simplification algorithm has been developed, in which two criteria are the crucial elements to control the collapse process for edges in 3D VRML models to reduce the amount of information. The major feature of the algorithm is that it has incorporated some advantages of the previously developed vertex decimation approach and edge collapse approach. Meanwhile, the mechanism of adaptive threshold parameters adopted in this work enhances the adaptability of the algorithm for various applications. Through case studies and comparisons with some related works, the algorithm shows good performance and potentials in terms of efficiency, adaptability and robustness.

Constructing Web-Based Object-Oriented Design Support System for Collaborative Ship Modeling

2007 ◽  
Vol 44 (03) ◽  
pp. 139-150
Author(s):  
Wei Tann ◽  
Heiu-Jou Shaw
Keyword(s):  
Support System ◽  
Collaborative Design ◽  
Three Dimensional ◽  
Object Oriented ◽  
3D Models ◽  
Communication Process ◽  
The Internet ◽  
Design Support ◽  
Object Oriented Design ◽  
Design Support System

Multidiscipline three-dimensional (3D) design tools are utilized by most advanced shipyards in the world to gain both competitive advantage and productivity. While deadlines become shorter and shorter, the complexity of modern commercial vessels increases steadily; therefore, it is imperative for the marine industry to integrate diverse engineering information systems. 3D models are repetitiously constructed mainly because specified requirements on different design stages are time-consuming. In order to supersede costly point-to-point integration or system-specific integration that have been used, much attention has been paid to develop the advanced and open platform to not only codevelop parts by designers at different geographical locations, coordinate dissimilar applications and application components, but facilitate connectivity and the overall communication process to provide the end user with integrated and consistent data. This paper describes the object-oriented data-sharing collaborative design support system (DSS). DSS is proposed to speed up the construction of 3D models by the Internet technologies to translate product data and further be capable of providing reasonable model configurations of XML descriptions and sharing Web Services on the Internet to comply with shipyards' specific strategies.

Collaborative Design System for Electromechanical Products

1996 ◽  
Author(s):  
Noboru Narikawa ◽  
Kazuo Takahashi
Keyword(s):  
Collaborative Design ◽  
Three Dimensional ◽  
3D Models ◽  
Information Management System ◽  
Design System ◽  
3D Cad ◽  
Cad System ◽  
Essential Components ◽  
Electromechanical Products

Abstract This paper gives an overview of a collaborative design system (CDS) for electromechanical products. To reduce design costs and to manufacture high-quality products, it is well known that concurrent engineering (CE) is a very efficient approach. Three-dimensional (3D) CAD system and engineering database system are essential components of CE. The CDS is an environment to realize CE. By creating 3D models in a computer and performing some simulations such as mechanical, electronic, software simulation and integrated simulations, it is possible to estimate functions, assemblability, manufacturability and so on, before making prototype models. In this paper, we outline the CDS and mainly discuss the total information management system (TIMS) which makes an important role of the CDS. This paper describes the implementation experience of some functions of the TIMS.

Progressive Visualization of Complex 3D Models Over the Internet

2016 ◽  
Vol 20 (6) ◽  
pp. 887-902 ◽  
Author(s):  
Jing Chen ◽  
Jiawei Li ◽  
Mo Li
Keyword(s):  
3D Models ◽  
The Internet

scholarly journals Modernising Anatomy Teaching: Which Resources Do Students Rely On?

2020 ◽  
Vol 7 ◽  
pp. 238212052095515
Author(s):  
Billy C Leung ◽  
Matthew Williams ◽  
Christopher Horton ◽  
Thomas DA Cosker
Keyword(s):  
3D Models ◽  
The Internet ◽  
Computer Assisted ◽  
First Year ◽  
Learning Resources ◽  
Undergraduate Medical Students ◽  
Computer Assisted Learning ◽  
Post Intervention ◽  
Digital Platforms ◽  
The University

The way in which we learn anatomy has changed exponentially over the decades and students now have access to lecture notes, textbooks, computer-assisted programmes, and a wide variety of internet based information. This study explored which resources were the most (and least) useful for a group of first year, undergraduate, medical students, with minimal prior content exposure (aged 18 and 19 years old, n = 76), over an 18 month period. Anatomy websites were found to be the most useful (30%), followed by tutorials (20%) and lectures (19%). A total of 13% found the university computer-assisted learning (CAL) platform least useful. We subsequently enhanced our ‘urogenital’ CAL anatomy module, with inclusion of new and updated images, videos and tutorials, as well as, digital and printed 3D-models. A post-intervention survey (n = 81) showed an increase from 12% to 27% for CAL as being most useful, and a decrease from 13% to 3% as being least useful. Our results provided a snapshot of students’ preferences in studying anatomy, and highlighted the importance of digital platforms and the need for evaluating our own learning resources. We must be mindful that there is an increasing tendency for students to rely on the Internet for information, which may expose them to unfiltered and unreliable content. We conclude that educators must be aware of the spectrum of learning resources used by students, to ensure that our own Institutional eLearning platforms are optimised to meet the diverse needs of learners.

Internet Design Studio

2004 ◽  
Author(s):  
Zahed Siddique
Keyword(s):  
Engineering Design ◽  
Collaborative Design ◽  
Engineering Students ◽  
Virtual Space ◽  
Design Studio ◽  
The Internet ◽  
Design Tools ◽  
Virtual Design ◽  
Internet In Education ◽  
Internet Design

In most instances engineering design courses are offered during the senior year of the undergraduate curriculum. These senior level design courses allow the students to apply different engineering concepts to design a product, with the expectation of preparing engineering students for a distributed and global workplace. Another possible alternative is to provide a simulated education environment where students can design products in a distributed and collaborative environment. The use of Internet in education has opened the possibility to explore and adopt new approaches to teach distributed collaborative engineering design and analysis. The Internet Design Studio, presented in this paper, tries to fulfill this need. In the Internet Design Studio each student is provided with a virtual design studio space for each project. The design studio spaces can be imagined as a virtual space containing design tools, applications, software and theoretical materials that facilitates students to design and perform analysis. Conceptually, a student enters the studio space and grabs appropriate tools to perform different design tasks. The design tools in the Internet Design Studio are web-based and support collaborations by allowing multiple users to view, discuss, create and utilize same models of the product to perform analysis. In this paper the framework of the Internet Design Studio is presented. The applicability of the framework is demonstrated through the use of several multi-designer collaborative design tools.

An Agent-Based Approach to Collaborative Product Design

2006 ◽  
Author(s):  
Jian Xun Wang ◽  
Ming Xi Tang
Keyword(s):  
Product Design ◽  
Data Structures ◽  
Collaborative Design ◽  
Design Management ◽  
Agent Based ◽  
Collaborative Product Design ◽  
Efficiency And Effectiveness ◽  
Product Design Process ◽  
Representation Scheme ◽  
New Framework

The growth of computer science and technology has brought new opportunities for multidisciplinary designers and engineers to collaborate with each other in a concurrent and coordinated manner. The development of computational agents with unified data structures and software protocols can contribute to the establishment of a new way of working in collaborative design, which is increasingly becoming an international practice. In this paper, we first propose a computational model of collaborative product design management aiming to improve the efficiency and effectiveness of the cooperation and coordination among participating disciplines. Then, we present a new framework of collaborative design which adopts an agent-based approach and relocates designers, managers, systems, and supporting agents in a unified knowledge representation scheme for product design. An agent-based system is now being implemented and the design of a set of dinning table and chairs is chosen to demonstrate how the system can help designers in the management and coordination of the collaborative product design process.

An Innovative TRIZ-Based Methodology to Explore Design Conflicts for Collaborative Product Design

2011 ◽  
Vol 145 ◽  
pp. 359-363 ◽  
Author(s):  
Tien Lun Liu
Keyword(s):  
Design Process ◽  
Collaborative Design ◽  
Product Complexity ◽  
Product Lifecycle ◽  
Team Members ◽  
Current State ◽  
Collaborative Product Design ◽  
Engineering Parameters ◽  
Design Requirements ◽  
Design Conflicts

Due to the product complexity and time constraint, it is common to conduct a collaborative design process to consider design requirements concurrently from the product lifecycle. However, such multi-disciplinary integration process may lead to potential design conflicts which has to be further resolved as the development continues. In this research, we propose a novel analytic model by combining the concepts of Ideal Final Result (IFR) and Trends analysis in TRIZ theory to systematically find the possible design contradictions from a top-down approach. The IFR is used to represent the integration of the developing product requirements which are requested from the collaborative team members. We then apply Trends analysis to compare the current state of existing product and the IFR state of the developing product. Therefore after comparison we will transform the differences into 39 engineering parameters defined in TRIZ to acquire possible design contradictions among components. The contributions of this methodology not only derive design conflicts systematically, but also help designers jump out of their psychological inertia and perform the design process with IFR to achieve distinct innovation.

Research on Late Join in Collaborative Pattern Design

2010 ◽  
Vol 108-111 ◽  
pp. 1492-1496
Author(s):  
Guo Zheng Wang ◽  
Bo Jiang
Keyword(s):  
Collaborative Design ◽  
Single Server ◽  
Distributed Environment ◽  
Pattern Design ◽  
Performance Requirements ◽  
Multiple Servers ◽  
Ubiquitous Environment ◽  
Design Systems

This paper presents the introduction of late join problem in collaborative pattern design systems under the ubiquitous environment, describes the performance requirements that the algorithm should meet, and proposes an efficient multiple servers algorithm which can prevent the problem brought by single server algorithm. By using this algorithm, the problem of late join brought in collaborative design in the distributed environment is well solved.

Sign in / Sign up

Export Citation Format

Share Document