Accession Number : ADA296190

Title :   Perceptual Design of a Virtual Rigid Surface Contact.

Descriptive Note : Final rept. Oct 92-Apr 93,

Corporate Author : STANFORD UNIV CA CENTER FOR DESIGN RESEARCH

Personal Author(s) : Rosenberg, Louis B.

PDF Url : ADA296190

Report Date : APR 1993

Pagination or Media Count : 50

Abstract : While the state of the art in visual and auditory information display for virtual environment systems has been advancing by leaps and bounds in recent years, the representation of virtual force information is still in its early infancy. Hindered by hardware limitations and safety considerations, most force reflection systems are unable to convincingly represent even the most basic of haptic precepts. What is probably the most frequently distorted sensory precept attempted by virtual force reflection systems is that of a rigid surface contact. Although most of the tactual interactions we encounter in our daily lives involve contact with rigid surfaces, most force reflecting systems are unable to realistically reproduce such a precept. Virtual rigid surface contacts are often described as "mushy," "sticky," or "bouncy" by even the most forgiving users. Jex (1991), in reporting on informal "rules of thumb" derived from experience with high-performance force reflecting aircraft simulators, suggested that the ability to produce a convincing rigid wall is a primary requirement of any general purpose haptic interface. Because of the basic importance of the realistic display of haptic rigid walls for even the most primitive force reflecting virtual environments, this study critically examines the "rigid-surface-contact" percept and attempts to develop guidelines for the convincing generation of such haptic sensations.

Descriptors :   *COMPUTER PROGRAMS, *DISPLAY SYSTEMS, REQUIREMENTS, STATE OF THE ART, REFLECTION, SURFACES, LIMITATIONS, WALLS, RIGIDITY, PERCEPTION, VISUAL AIDS, AUDITORY SIGNALS.

Subject Categories : Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE