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  • Pseudo-Haptics for Rigid Tool/Soft Object Interaction Feedback in Virtual Environments

Li, Min, Ridzuan, Maisarah B., Sareh, Sina, Seneviratne, Lakmal. D., Dasgupta, Prokar and Althoefer, Kaspar, 2014, Journal Article, Pseudo-Haptics for Rigid Tool/Soft Object Interaction Feedback in Virtual Environments Mechatronics, 24 (8). pp. 1092-1100. ISSN 0957-4158

Abstract or Description:

This paper proposes a novel pseudo-haptics soft object stiffness simulation technique which is a marked improvement to currently used simulation methods and an effective low-cost alternative to expensive 3-DOF haptic devices. Soft object stiffness simulation is achieved by maneuvering an indenter avatar over the surface of a virtual soft object by means of an input device, such as a mouse, a joystick, or a touch-sensitive tablet. The alterations to the indenter avatar behavior produced by the proposed technique create for the user the illusion of interaction with a hard inclusion embedded in the soft object. The proposed pseudo-haptics technique is validated with a series of experiments conducted by employing three types of 2-DOF force-sensitive haptic surfaces, including a touchpad, a tablet with an S-pen input, and a tablet with a bare finger input. It is found that both the sensitivity and the positive predictive value of hard inclusion detection can be significantly improved by 33.3% and 13.9% respectively by employing tablet computers. Using tablet computers could produce results comparable to direct hand touch in detecting hard inclusions in a soft object. The experimental results presented here confirm the potential of the proposed technique for conveying haptic information in rigid tool / soft object interaction in virtual environments.

Official URL: https://www.sciencedirect.com/science/article/pii/...
Subjects: Other > Engineering > H600 Electronic and Electrical Engineering
Other > Engineering > H600 Electronic and Electrical Engineering > H670 Robotics and Cybernetics
Other > Engineering > H600 Electronic and Electrical Engineering > H670 Robotics and Cybernetics > H671 Robotics
School or Centre: School of Design
Funders: National Institute for Health Research (NIHR) Biomedical Research Centre based at Guy's and St Thomas' NHS Foundation Trust and King's College London, the European Commission’s Seventh Framework Programme under grant agreement 287728
Identification Number or DOI: https://doi.org/10.1016/j.mechatronics.2014.07.004
Date Deposited: 03 Mar 2018 15:01
Last Modified: 09 Nov 2018 14:31
URI: http://researchonline.rca.ac.uk/id/eprint/3220

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