A Quantitative Analysis on Virtual Reality-Based Computer Aided Design System Interfaces

Abstract

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.

Augmented Multisensory Interface Design (AMID): A Human-Centric Approach to Unisensory and Multisensory Augmented Reality Design

“…Task time was generally unaffected by interface conditions, with the exception of the AMID-compliant multisensory interface (audio1ϩhaptic). Many AR and multisensory studies have reported a reduction in task time (e.g., Boud, Haniff, Baber, & Steiner, 1999;Chu, Mo, & Gadh, 2002), though these studies did not report imposing time limits on participants. Because every experimental landmine detection task in this study was limited to 900 s, a ceiling effect was created.…”

Multimodal Natural Human–Computer Interfaces for Computer-Aided Design: A Review Paper

“…Efficiency: This metric is mainly established in terms of the task completion time and includes the system response time. In the view of [117], the time period, when the user is planning how to operate a generate/modified task through the user interface in a CAD system, should also be included as a component of task completion time in addition to the operation execution time. From the time test results, Chu et al [117] found that using the novel multimodal interface results in a speedup of 1.5 to 2.0 times over the traditional interface (mouse and keyboard) in the process of building simple models, such as block, cylinder, sphere, etc.…”

“…In the view of [117], the time period, when the user is planning how to operate a generate/modified task through the user interface in a CAD system, should also be included as a component of task completion time in addition to the operation execution time. From the time test results, Chu et al [117] found that using the novel multimodal interface results in a speedup of 1.5 to 2.0 times over the traditional interface (mouse and keyboard) in the process of building simple models, such as block, cylinder, sphere, etc. For more complex models, modeling with a traditional interface takes three to four times longer than with the novel interface [117].…”

“…From the time test results, Chu et al [117] found that using the novel multimodal interface results in a speedup of 1.5 to 2.0 times over the traditional interface (mouse and keyboard) in the process of building simple models, such as block, cylinder, sphere, etc. For more complex models, modeling with a traditional interface takes three to four times longer than with the novel interface [117]. The main factor contributing to these differences is that the number of operations required for traditional interface increases significantly relative to the novel interface with the increase in model complexity.…”

Enabling Engineering Document in Mobile Computing Environment

“…Typically, an engineering document generated by engineering processes carries a large amount of information [3] [4]. The limitations of mobile computing pose challenges on processing engineering documents in the mobile computing environment.…”