COMPUTER-AIDED AND VIRTUAL REALITY TECHNIQUES FOR GRAPHICAL ARTWORKS

Author(s):  
Chi-Cheng Chu ◽  
Rajit Gadh

In this paper, a series of interface tests on interaction approach for the generation of geometric shape designs via multi-sensory user interface of a Virtual Reality (VR) based System is presented. The goal of these interface tests is to identify an effective user interface for VR based Computer-Aided Design (CAD) system. The intuitiveness of the VR based interaction approach arises from the use of natural hand movements/gestures, and voice commands that emulate the way in which human beings discuss geometric shapes in reality. The focus of this paper is on determining a set of effective interaction approaches by using the combinations of auditory, tactile, and visual sensory modalities to accomplish typical CAD tasks. In order to evaluate the proposed interaction approach, a prototypical VR-CAD system is implemented. A series of interface tests were performed on the prototypical systems to determine the relative efficiency of a set of potential interaction approach with respect to specific fundamental design tasks. The interface test and its results are presented in this paper.


2012 ◽  
Vol 23 (1) ◽  
pp. 121-132
Author(s):  
Marek Dźwiarek ◽  
Tomasz Strawiński ◽  
Jarosław Jankowski

Abstract The scope of the project covers the development of a method for assessment of risk related to machinery, based on the computer-aided virtual reality technique. The investigations started with the formulation of the matrix of correspondence between the hazards and functions performed by the VR using document-based inspection method based on documentation of the 3 machines. Further investigations have been conducted by Expert Inspection method using virtual models of 3 machines. It was proved that the immersive projection technology were highly usable in the assessment of risk involved by mechanical hazards and arriving at more accurate results necessary for machine assessment in view of ergonomic then the HDM techniques. In further research the usability of the developed method will be investigated using the User Testing method.


Author(s):  
Santosh Kumar Thukaram ◽  
Qingjin Peng ◽  
Subramaniam Balikrishnan

Fixtures are important components in manufacturing systems. Fixturing changes because of manufacturing changing from mass production to production in smaller batches and higher variety of products. Computer-aided fixture design (CAFD) systems automate the process of fixture design and verification. Research work has mainly concentrated either on automating the CAFD process or on making it user-friendly and interactive. However a final fixturing scheme may not be optimal because different users may need fixtures to meet different requirements, this paper proposes a conceptual module for the fixture validation to compare, test and analyze various combinations of fixturing elements. A fixture validation model is developed using a virtual reality (VR) system to support the idea presented in this paper.


Author(s):  
Scott Angster ◽  
Kevin Lyons ◽  
Peter Hart ◽  
Sankar Jayaram

Abstract The emergence of high performance computing has opened up new avenues for the design and analysis community. Integrated Product/Process Design techniques are allowing multi-functional teams to simultaneously optimize the design of a product. These techniques can be inhibited, however, due to software integration and data exchange issues. The work outlined in this paper focuses on these issues as they relate to the design and analysis of electro-mechanical assemblies. The first effort of this work is the creation of an open environment, called the Open Assembly Design Environment. The goal of this environment is to integrate the otherwise disparate assembly design tools using a central control system and a common set of data. These design tools include virtual reality based design systems, computer-aided design systems, design for assembly systems and process planning systems. This paper outlines the overall goals of the project, presents the architecture designed for the system, describes the interfaces developed to integrate the systems, and discusses the data representation requirements for a system integrating a virtual reality system with computer-aided design systems.


2002 ◽  
Vol 2 (3) ◽  
pp. 216-223 ◽  
Author(s):  
Chi-Cheng Chu ◽  
Jianzhong Mo ◽  
Rajit Gadh

In this paper, a series of interface tests on interaction approach for the generation of geometric shape designs via multi-sensory user interface of a Virtual Reality (VR) based System is presented. The goal of these interface tests is to identify an effective user interface for VR based Computer-Aided Design (CAD) system. The intuitiveness of the VR based interaction approach arises from the use of natural hand movements/gestures, and voice commands that emulate the way in which human beings discuss geometric shapes in reality. In order to evaluate the proposed interaction approach, a prototypical VR-CAD system is implemented. A series of interface tests were performed on the prototypical systems to determine the relative efficiency of a set of potential interaction approach with respect to specific fundamental design tasks. The interface test and its results are presented in this paper.


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