87 Results
July 9, 2019
Stiffness in Virtual Contact Events: A Non-Parametric Bayesian Approach
IEEE World Haptics Conference
In this study we investigated the use of simple vibrotactile signals to simulate contact with a virtual object. In particular we explored the relation between properties of the signal and the perceived hardness of the object.
By: Jonathan Browder, Séréna Bochereau, Femke E. van Beek, Raymond King
AR/VR July 8, 2019
Perceptual Limits of Visual-Haptic Simultaneity in Virtual Reality Interactions
IEEE World Haptics Conference
The goal of this work is to establish the range of visual-haptic asynchronies that go unnoticed when touching an object. To perform a psychophysical study, however, we would need asynchronous visual-haptic stimuli, but because the contact of the finger with a real object inevitably creates synchronized haptic feedback, here we employ instead a virtual reproduction of the interaction.
By: Massimiliano Di Luca, Arash Mahnan
Human Computer Interaction & UX July 8, 2019
Tactile Echoes: A Wearable System for Tactile Augmentation of Objects
IEEE World Haptics Conference
We present Tactile Echoes, a wearable system for augmenting tactile interactions with any object. This system senses vibrations in the fingertip that are produced by interactions of the finger with a touched object. It processes the vibration signals in real-time via a parametric signal network and returns them to the finger as “Tactile Echoes” of the touch interaction.
By: Anzu Kawazoe, Massimiliano Di Luca, Yon VisellJuly 8, 2019
The frequency of tactile adaptation systematically biases subsequent frequency identification
IEEE World Haptics Conference
Exposure to a particular sensory stimulation for a prolonged period of time often results in changes in the associated perception of subsequent stimulation. Such changes can take the form of decreases in sensitivity and/or aftereffects. Aftereffects often result in a rebound in the perception of the associated stimulus property when presented with a novel stimulus. The current study sought to determine if such perceptual aftereffects could be experienced following tactile stimulation at a particular frequency.
By: John de Grosbois, Raymond King, Massimiliano Di Luca, Cesare Parise, Rachel Bazen, Mounia ZiatJuly 8, 2019
Exogenous cueing of visual attention using small, directional, tactile cues applied to the fingertip
IEEE World Haptics Conference
The deployment of visual spatial attention can be significantly influenced in an exogenous, presumably bottom-up manner. Traditionally, spatial cueing paradigms have been utilized to come to such conclusions. Although these paradigms have primarily made use of visual cues, spatially correspondent tactile cues have also been successfully employed.
By: John de Grosbois, Massimiliano Di Luca, Raymond King, Cesare Parise, Mounia ZiatJuly 7, 2019
Affective touch communication in close adult relationships
IEEE World Haptics Conference
Inter-personal touch is a powerful aspect of social interaction that we expect to be particularly important for emotional communication. We studied the capacity of closely acquainted humans to signal the meaning of several word cues (e.g. gratitude, sadness) using touch sensation alone.
By: Sarah McIntyre, Athanasia Moungou, Rebecca Boehme, Peder M. Isager, Frances Lau, Ali Israr, Ellen A. Lumpkin, Freddy Abnousi, Håkan OlaussonJuly 7, 2019
Uncovering Human-to-Human Physical Interactions that Underlie Emotional and Affective Touch Communication
IEEE World Haptics Conference
Couples often communicate their emotions, e.g., love or sadness, through physical expressions of touch. Prior efforts have used visual observation to distinguish emotional touch communications by certain gestures tied to one’s hand contact, velocity and position. The work herein describes an automated approach to eliciting the essential features of these gestures.
By: Steven C. Hauser, Sarah McIntyre, Ali Israr, Håkan Olausson, Gregory J. GerlingJuly 7, 2019
From Human-to-Human Touch to Peripheral Nerve Responses
IEEE World Haptics Conference
Human-to-human touch conveys rich, meaningful social and emotional sentiment. At present, however, we understand neither the physical attributes that underlie such touch, nor how the attributes evoke responses in unique types of peripheral afferents. Indeed, nearly all electrophysiological studies use well-controlled but non-ecological stimuli. Here, we develop motion tracking and algorithms to quantify physical attributes – indentation depth, shear velocity, contact area, and distance to the cutaneous sensory space (receptive field) of the afferent – underlying human-to-human touch.
By: Steven C. Hauser, Saad S. Nagi, Sarah McIntyre, Ali Israr, Håkan Olausson, Gregory J. GerlingJuly 7, 2019
A Compact Skin-Shear Device using a Lead-Screw Mechanism
IEEE World Haptics Conference
We present a skin-shear actuator based on the lead screw mechanism. The lead screw mechanism is simple, reliable, offers fewer components, and accommodates into compact form-factors. We show mechanical design of a single assembly unit and implement multiple units in a single handheld device. We evaluate the actuator in one instrumentation-based test and one preliminary user study.
By: Pratheev Sreetharan, Ali Israr, Priyanshu AgarwalJune 27, 2019
Sensor Modeling and Benchmarking — A Platform for Sensor and Computer Vision Algorithm Co-Optimization
International Image Sensor Workshop
We predict that applications in AR/VR devices [1] and intelligence devices will lead to the emergence of a new class of image sensors — machine perception CIS (MPCIS). This new class of sensors will produce images and videos optimized primarily for machine vision applications, not human consumption.
By: Andrew Berkovich, Chiao Liu
Computer Vision