Spacedesign: a mixed reality workspace for aesthetic industrial design
ABSTRACT Spacedesign is an innovative mixed reality (MR) application addressed to aesthetic design of free form curves and surfaces. It is a unique and comprehensive approach which uses task-specific configurations to support the design workflow from concept to mock-up evaluation and review. The first-phase conceptual design benefits from a workbench-like 3-D display for free hand sketching, surfacing and engineering visualization. Semitransparent stereo glasses augment the pre-production physical prototype by additional shapes, textures and annotations. Both workspaces share a common interface and allow collaboration and cooperation between different experts, who can configure the system for the specific task. A faster design workflow and CAD data consistency can be thus naturally achieved. Tests and collaborations with designers, mainly from automotive industry, are providing systematic feedback for this ongoing research. As far as the authors are concerned, there is no known similar approach that integrates the creation and editing phase of 3D curves and surfaces in virtual and augmented reality (VR/AR). Herein we see the major contribution of our new application.
Full-textDOI: · Available from: Michele Fiorentino, May 29, 2015
SourceAvailable from: Jihad El-SanaComputers in Entertainment 02/2015; 12(3):1-18. DOI:10.1145/2702109.2633419
[Show abstract] [Hide abstract]
ABSTRACT: Conceptual design defines the basic form and function of a product. In this paper, the use of functional 3D models (F3DM) for conceptual design is presented. The designer performs conceptual design by first defining how the product can be used in the form of a Product Use Model, followed by creating basic 3D models using his/her bare hands in an Augmented Reality CAD Environment (ARCADE). A multilevel function–behavior–structure modeling framework is developed for design reasoning and evaluation to ensure that the design is functionally and geometrically consistent. The functional behavior of a product can be simulated as a prototype in ARCADE to demonstrate the use of the product and detect potential usability issues. Two case studies of the design of a table-top cleaner and a fruit processor are conducted to demonstrate the application of F3DM in conceptual design.International Journal for Interactive Design and Manufacturing (IJIDeM) 05/2014; 9(2). DOI:10.1007/s12008-014-0207-6
[Show abstract] [Hide abstract]
ABSTRACT: In this work, we propose the use of the Neural Gas (NG), a neural network with unsupervised competitive hebbian learning (CHL), to develop a reverse engineering process. This is a simple and accurate method to reconstruct objects from the point cloud obtained from overlapped multiple views using low cost sensors. In contrast to other methods that may need several stages that include downsampling, noise filtering and many other tasks, the NG automatically obtains the 3D model of the scanned objects. The combination of the acquired and reconstructed 3D models with virtual and augmented reality environments allows the users interaction and also permits developing a virtual design and manufacturing system. To demonstrate the validity of our proposal we tested our method with several models and performed a study of the neural network parameterization calculating the quality of representation and also comparing results with other neural methods like Growing Neural Gas and Kohonen maps or clasical methods like Voxel Grid. We also reconstructed models acquired by low cost sensors that can be included in virtual and augmented reality environments to redesign or manipulation purpose. Since the NG algorithm has a strong computational cost we propose its acceleration. We have redesigned and implemented the NG learning algorithm to fit it onto a Graphic Processor Unit using CUDA. A speed-up of 180x faster is obtained compared to the sequential CPU version.Applied Soft Computing 07/2015; 32:87–100. DOI:10.1016/j.asoc.2015.03.042 · 2.68 Impact Factor