Showing papers by "Sandro Barone published in 2004"

A computer-aided design-based system for posture analyses of motorcycles

Abstract: This paper presents a computer-aided design (CAD)-based system for ergonomics analyses of motorcycles, which includes three-dimensional models of vehicle configurations and equipment, three-dimensional human models of various anthropometries and evaluative techniques to assess reach and postures. The system is based on a modular structure that integrates an established top-down computer-aided design framework for motorcycle design, a widely used anthropometric database and specific behavioural criteria defined by an experimental procedure correlating driving postures and vehicle configurations. As a result, vehicle designers are able to use a single analysis tool to prognosticate and assess postural comfort, from the earliest stages of the design process. In the paper, issues in vehicle design with reference to ergonomics assumptions and posture evaluations by a computerized system are discussed.

A reverse engineering methodology to capture complex shapes

Abstract: This paper presents a research activity concerning the development of a non-contact scanning system based on combining structured light with stereo vision. A methodology is proposed to establish reliable dense correspondences among a pair of cameras on the basis of vertical and horizontal coded fringe patterns. The methodology can efficiently be used to measure freeform shapes, which typically do not present peculiarities usable by classical correlation procedures. The proposed technique is the core of a complete 3D shape measurement framework, which also includes a multi-scan procedure to reconstruct complex surfaces. In this work, the system has been successfully used to measure styling surfaces of sport cars. In particular, the methodology has been applied to acquire and model the shapes of a scaled vehicle prototype, typically, used for aerodynamic tests in wind tunnel.