4,060 research outputs found
Haptic Experience and the Design of Drawing Interfaces
Haptic feedback has the potential to enhance usersâ sense of being engaged and creative in their artwork. Current work on providing haptic feedback in computer-based drawing applications has focused mainly on the realism of the haptic sensation rather than the usersâ experience of that sensation in the context of their creative work. We present a study that focuses on user experience of three haptic drawing interfaces. These interfaces were based on two different haptic metaphors, one of which mimicked familiar drawing tools (such as pen, pencil or crayon on smooth or rough paper) and the other of which drew on abstract descriptors of haptic experience (roughness, stickiness, scratchiness and smoothness). It was found that users valued having control over the haptic sensation; that each metaphor was preferred by approximately half of the participants; and that the real world metaphor interface was considered more helpful than the abstract one, whereas the abstract interface was considered to better support creativity. This suggests that future interfaces for artistic work should have user-modifiable interaction styles for controlling the haptic sensation
Virtual Reality Games for Motor Rehabilitation
This paper presents a fuzzy logic based method to track user satisfaction without the need for devices to monitor users physiological conditions. User satisfaction is the key to any productâs acceptance; computer applications and video games provide a unique opportunity to provide a tailored environment for each user to better suit their needs. We have implemented a non-adaptive fuzzy logic model of emotion, based on the emotional component of the Fuzzy Logic Adaptive Model of Emotion (FLAME) proposed by El-Nasr, to estimate player emotion in UnrealTournament 2004. In this paper we describe the implementation of this system and present the results of one of several play tests. Our research contradicts the current literature that suggests physiological measurements are needed. We show that it is possible to use a software only method to estimate user emotion
Interactive Chemical Reactivity Exploration
Elucidating chemical reactivity in complex molecular assemblies of a few
hundred atoms is, despite the remarkable progress in quantum chemistry, still a
major challenge. Black-box search methods to find intermediates and
transition-state structures might fail in such situations because of the
high-dimensionality of the potential energy surface. Here, we propose the
concept of interactive chemical reactivity exploration to effectively introduce
the chemist's intuition into the search process. We employ a haptic pointer
device with force-feedback to allow the operator the direct manipulation of
structures in three dimensions along with simultaneous perception of the
quantum mechanical response upon structure modification as forces. We elaborate
on the details of how such an interactive exploration should proceed and which
technical difficulties need to be overcome. All reactivity-exploration concepts
developed for this purpose have been implemented in the Samson programming
environment.Comment: 36 pages, 14 figure
On the Collaboration of an Automatic Path-Planner and a Human User for Path-Finding in Virtual Industrial Scenes
This paper describes a global interactive framework enabling an automatic path-planner and a user to collaborate for finding a path in cluttered virtual environments. First, a collaborative architecture including the user and the planner is described. Then, for real time purpose, a motion planner divided into different steps is presented. First, a preliminary workspace discretization is done without time limitations at the beginning of the simulation. Then, using these pre-computed data, a second algorithm finds a collision free path in real time. Once the path is found, an haptic artificial guidance on the path is provided to the user. The user can then influence the planner by not following the path and automatically order a new path research. The performances are measured on tests based on assembly simulation in CAD scenes
Sensory Manipulation as a Countermeasure to Robot Teleoperation Delays: System and Evidence
In the field of robotics, robot teleoperation for remote or hazardous
environments has become increasingly vital. A major challenge is the lag
between command and action, negatively affecting operator awareness,
performance, and mental strain. Even with advanced technology, mitigating these
delays, especially in long-distance operations, remains challenging. Current
solutions largely focus on machine-based adjustments. Yet, there's a gap in
using human perceptions to improve the teleoperation experience. This paper
presents a unique method of sensory manipulation to help humans adapt to such
delays. Drawing from motor learning principles, it suggests that modifying
sensory stimuli can lessen the perception of these delays. Instead of
introducing new skills, the approach uses existing motor coordination
knowledge. The aim is to minimize the need for extensive training or complex
automation. A study with 41 participants explored the effects of altered haptic
cues in delayed teleoperations. These cues were sourced from advanced physics
engines and robot sensors. Results highlighted benefits like reduced task time
and improved perceptions of visual delays. Real-time haptic feedback
significantly contributed to reduced mental strain and increased confidence.
This research emphasizes human adaptation as a key element in robot
teleoperation, advocating for improved teleoperation efficiency via swift human
adaptation, rather than solely optimizing robots for delay adjustment.Comment: Submitted to Scientific Report
- âŠ