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In order to achieve the realism required in simulating the physical behavior of tissues during deformation, the methods which allow the use of physical parameters are the most widely employed. This paper presents a method of simulating the deformation of three-dimensional objects that represent human organs through multiple layers of tissue, which utilizes the following physical parameters: modulus...
If Walking-in-place (WIP) techniques are to be considered a useful way of facilitating virtual locomotion, it is crucial that the user remains stationary with respect to the physical environment. However, it has recently been documented that WIP locmotion may lead to Unintended Positional Drift (UPD). Users walking in place while wearing a head-mounted display tend to physically drift in the direction...
Users wearing a head-mounted display while relying on Walking-In-Place techniques for virtual locomotion tend to physically drift in the direction which they are headed within the virtual environment. It has previously been demonstrated that different types of feedback may be used to constrain the movement of the user. This poster presents a within-subjects study comparing four methods for ensuring...
Following audio and visual information, storing and reproducing of human motion is attracting attention. In order to realize this concept, motion-copying system has been proposed. The motion-copying system is based on the bilateral control composed of master and slave system. In this system, the motion of master system can be stored and reproduced by the only slave system. The useful application of...
Medical surgeries in the space environment, including long term space travel (e.g., to Mars) and permanent presence on other planetary bodies (e.g., Moon and Mars), are posing an inherent logistical, and in the absence of appropriately trained personnel (i.e., surgeons), even a potentially life-threatening challenge. As a potential mitigation the use of an existing surgical trainer tool that would...
Modifying data of audio and visual information makes sound from speaker or display size larger or smaller. However, motion data has a different characteristic from audio and visual data in that it is a bilateral information. When the movement of motion data is scaled, it is affected by reaction force from environments.
In this work, we propose haptic-based bilateral tele-operation for quad-rotor vehicles by using Internet communication infrastructure. The idea is to introduce shared autonomy to increase remote operation and manipulation capacity of the vehicle in uncertain flying environments. The design couples ground and remote sites by position and velocity signals of the master haptic and slave quad-rotor vehicle...
In a robot-assisted tele-operation, the operator uses a hand controller to maneuver a tool attached to the robot's end-effector. The performance in such tele-operation may depend on perceptual information about the operating site as well as the design of the hand-controller. A hand-controller that provides haptic information as force feedback during the interaction in tele-operation may be beneficial...
We propose a new unified rendering interface — SenseViewer — that allows users to annotate and label visual, auditory and in particular haptic cues to medical images. This new interface may support pre-operation planning, surgical training and medical robot guidance better. Users can touch and feel virtual organs and tissues with haptics. The visual and auditory cues are helpful to define optimal...
Human-humanoid haptic joint actions are collaborative tasks requiring a sustained haptic interaction between both parties. As such, most research in this field has concentrated on how to use solely the robot's haptic sensing to extract the human partners' intentions. With this information, interaction controllers are designed. In this paper, the addition of visual sensing is investigated and a suitable...
Touch screen devices are getting more and more popular as technology advances, performing transactions online through mobile devices is not an exception as well. However, touchscreen devices are small in screen sizes, giving a different feel compared to a computer screen. It was suggested that users need to have more realistic feedback to complement the lack of space on the screen. Research is done...
Generating a concept map from instructional material is an effective way to understand the relationships among the concepts embedded in the material. However, there are several attributes such as importance of concepts or relationships between them in the materials that learners would often miss even in concept map generation. The purpose of this work is to give learners with pseudo-haptic feedback...
The effect of a white noise stimulus on perceived length was investigated. In contrast to our expectations, stimulus lengths presented in the radial-vertical axis were underestimated relative to those presented in the horizontal axis. Surprisingly, differing stimulus lengths and exposure times had no influence on percentage error scores, suggesting that these factors play no role in what we are calling...
For able-bodied people within the art and design discipline, access to Computer Aided Design (CAD) and visual graphic interface is a well-defined iterative process. However for non-sighted people or people with impaired vision, this is a difficult process to facilitate. Often this issue excludes and/or limits access for people with vision impairments to fully utilise CAD systems, web interface, and...
Remote experiment and his quite recent extension towards remote experiment network have created a new workspace in teaching / learning environment. There is well known the fact that “environment influences behavior” (Gallagher -1993). Remote experiment has an articulated, codified and stored shape being easy to be transmitted to others. It means that remote experiment has all of the characteristics...
This paper considers two dimensional object tracking and recognition using combined texture and pressure cues. Tactile object recognition plays a major role in several HCI applications especially scientific visualization for the visually impaired. A tactile display based on a pantograph mechanism and 2×2 vibrotactile unit array was used to represent haptic virtual objects. Two experiments were carried...
The future of working machines winks to semi autonomy and latest technological aids to improve the quality of operations as well as the easiness of specific tasks execution. This field can take great advantage of latest human-machine interface (HMI) technologies that has been applied in the last years in field like virtual environments and robotics.
The term User Experience (UX) is commonly associated with interactive computer-based systems. Companies operating in the consumer market are recently discovering the importance of designing UX, and in particular multisensory UX, of any kind of system, and not necessarily high-tech products. One of the most effective ways to design UX is to enable users interacting with the prototype of the system...
Narrations of visual content, or audio descriptions, enhance the accessibility of video media for individuals who are blind. While the adoption of this assistive technology continues to broaden, audio descriptions have several limitations: they often lack detail (i.e., are abridged) to fit within dialogue-free gaps, and are difficult to use in fast-paced sequences or scenes of continuous dialogue...
We describe an experimental system for the evaluation of teleoperation performance. The system was used in two experiments where operators were assigned the task of discovering a buried object while minimizing contact forces. The studies i) demonstrated the advantage of haptic feedback in the discovery task, and ii) compared different methods for haptic feedback, including our new bimanual method,...
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