Accurate calibration of sensory estimators is critical for maintaining accurate estimates of the environment. Classically, it was assumed that sensory calibration occurs by one sense changing to become consistent with vision; this is visual dominance. Recently, it has been proposed that changes in estimators occur according to their relative reliabilities; this is the reliability-based model. W...

In two experiments we investigated the effects of voluntary movements on temporal haptic perception. Measures of sensitivity (JND) and temporal alignment (PSS) were obtained from temporal order judgments made on intermodal auditory-haptic (Experiment 1) or intramodal haptic (Experiment 2) stimulus pairs under three movement conditions. In the baseline, static condition, the arm of the participa...

Visuo-haptic augmented reality systems enable users to see and touch digital information that is embedded in the real world. Precise colocation of computer graphics and the haptic stylus is necessary to provide a realistic user experience. PHANToM haptic devices are often used in such systems to provide haptic feedback. They consist of two interlinked joints, whose angles define the position of...

This paper proposes a nonlinear controller to extend the Zwidth of a haptic device. A time-domain passivity analysis of the Z-width diagram leads to the new haptic controller, which employs acceleration feedback. The passivity condition for one degree of freedom (1DOF) haptic interaction with a virtual wall via the proposed controller is derived using passivity theory in the frequency domain. T...

Under-actuated 6/3-DOF haptic devices are mostly used for simple 3-DOF point-based haptic interaction because of missing torque feedback. In this work, we present a system involving sensory substitution and pseudo-haptic feedback that effectively simulate torque feedback using visuo-tactile cues. The proposed system was implemented into a 6DOF haptic rendering algorithm and tested on an under-a...

This paper outlines a study into the effects of colocation of haptic and visual sensory modes in VR simulations. The study hypothesis is that co-location of these sensory modes will lead to improved task performance and enhanced sense of presence within a VR environment. Experiments were conducted to evaluate the effect on user performance of co-located haptic feedback. Results show that co-loc...

This article describes a haptic rendering algorithm for arbitrary polygonal models using a six degree-offreedom haptic interface. The algorithm supports activities such as virtual prototyping of complex polygonal models and adding haptic interaction to virtual environments. The underlying collision system computes local extrema in distance between the model controlled by the haptic device and t...

In this paper a use of haptic and visual training for Chinese handwriting learning is investigated. Participants learned a given character under three training conditions (haptic, visual, haptic-visual) and were required to write the given character plus two characters with common stokes on a tablet before and after training for improvement comparison. Performance was measured in terms of mean ...

This paper presents a study to identify a set of haptic cues for the drawing domain. The study involved 21 traditional artists using various pen-like tools and describing the tactile sensation felt when drawing. The study has identified a set of haptic features perceived in the real world situation, which will be used to inform the design of haptic cues to be implemented within a novel drawing ...

In this paper, we explore haptic editing as a powerful way to enhance haptic realism. Building upon the framework of a previous implicit-based haptic technique, our haptic decoration technique allows the user to first paint directly on 3D models, and then to sense the thickness variation due to the added paint. Meanwhile, material editing permits the user to edit and feel local material propert...