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Traditional forms of motor learning, i.e., audio-visual instruction and/or guidance through physical contact, are limited depending on the situation such as instruction in a noisy or busy classroom setting, or across a large physical separation. Vibrotactile stimulation has recently emerged as a promising alternative or augmentation to traditional forms of motor training and learning, but has evolved...
Haptic interfaces add excitement and enjoyment to an application. Since haptics is not yet a mainstream medium, the improvement of an application's Quality of Experience (QoE) by the addition of haptic feedback is still not completely understood. This paper focuses on the effect of force feedback and what it adds to the experience of the user compared to visual and auditory feedback. In essence, it...
Touch is one of the most important senses in our everyday life when exploring and experiencing the physical world. It is, however, rare that haptic applications have been used to support learning at school. This paper describes a case study on utilizing haptic applications in the 8th grade physics learning. The study was carried out in a close collaboration with teachers in a real teaching environment...
This paper presents a novel human-robot interaction system for which haptic interaction is involved. The system consists of a nonholonomic mobile robot and a Phantom Omni haptic device. The tracking problem on the 2D plane is analyzed and the backstepping technique is used for designing the tracking algorithm for the nonholonomic mobile robot. A haptic rendering algorithm is designed to generate the...
Since technology started to be large scale distributed, gaming experience has changed radically. After years of graphical details challenges, the attention has been shifted on how users can interact with games. Users nowadays can play and interact much more than before, considering himself/herself the chief character of the entire game scene with his physical actions. Possibilities have been increased...
This paper discusses the use of the Scale Invariance Feature Transform (SIFT) features for bare hand gesture recognition. In the training stage, we can not use SIFT keypoints of training images directly with a multi-class Support Vector Machine (SVM) to build a training classifier model, because of the space incompatibility of the SIFT keypoints for every training image that contains the hand gesture...
During the recording of a haptic interaction session both position and force-feedback data have to be saved. This work proposes two novel methods for haptic data compression which allow to keep the reconstruction errors during playback below human perception thresholds. Supported by well-known results from psychophysics, the first proposed non-iterative method determines the least amount of samples...
The goal of this study was to evaluate different learning conditions for motor skill transfer. The study was divided into two experiments with the same task: learning a 3D trajectory with accuracy. The first experiment was focused on evaluating the efficiency of three feedback schemes for the target trajectory: visual, haptic and visual-haptic feedback. The second experiment was focused on analyzing...
Blind spots are a nuisance of everyday driving that cause a significant number of accidents every year. Current blind spot systems mainly take advantage of visual feedback for the driver. However, an active blind spot system physically involves the driver to help reduce the number of overall accidents. In this paper, a force-feedback gas pedal and a force-feedback steering wheel are used in conjunction...
This paper reports the results of an experimental study on the perception of rough textures in virtual environments. The experiment is conducted with a haptic tactile actuator that provides sensations of rough textures directly to the fingertip of the users. It consists of a brush and a DC motor. The brush rubs directly against the user's fingertip. The speed and direction of the brush are varied...
In this paper a human perception-based data reduction method is suggested to reduce the number of packets transmitted in 6-degrees-of-freedom (DOF) telehaptic systems; specifically in haptic-enabled telepresence. The algorithm relies on knowledge from human haptic perception in order to reduce the number of packets transmitted without compromising transparency. Several distance metrics are also discussed...
In this paper we describe our design of an interactive haptic system aimed at map navigation by a blind computer user. Our system incorporates multi-resolution interaction with different levels of information released at each level. Our initial user study demonstrated the effectiveness of our system in aiding users to perform complex tasks without the assistance of visual input. Our study focused...
Potential of nonverbal communication as the communication medium between multiuser 3D virtual worlds and real environment are attracting the interest of many researchers around the world. Driven by the motivation, we explored the possibilities of integrating haptic interactions with Linden Lab's multiuser online virtual world, Second Life. We developed an add-on to the Second Life communication channel...
We explore the potential for a portable gait retraining system, which provides real-time haptic feedback to a user who may not devote full attention to training. We present a study that compares the effects of attention and haptic feedback on learning a new gait to understand whether users can improve performance when distracted and if real-time haptic feedback can enhance the process. We find that...
In this paper, a novel haptic interface is presented for exploring the dorsal surface of the finger phalanges as visuo-haptic sensory substitution modality. The constructional details of the proposed haptic glove are detailed along with two experiments that explore vibrotactile localization and spatio-temporal cue identification among users who are blind and sighted, but blind-folded. The use of the...
This paper presents the kinematic analysis of a new 6-DOF haptic interface and control system analysis for the tele-operation of 6-DOF serial robot. The haptic interface consists of two 3-DOF parallel structures connected with a steering handle. The design satisfies requirements of low mass moment of inertia, quick motion, big rotation, and large applied torques. Kinematics for position and differential...
Given the growing popularity of multi-touch mobility devices (e.g., iPods, smartphones), the move to multi-user touch screens and horizontal surfaces is a likely trajectory of the technology. Before smart tables become widely accepted, there are many questions particularly with respect to sound production and reception and multi model interaction for these devices that need to be explored (i.e., the...
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