Interaction through handheld devices is increasingly being used in virtual environments (VEs) for science, engineering, and entertainment applications. Some of the uniqueness of these nontraditional multiplatform user interfaces (MPUI) lies in the division of information between multiple displays and the remote control of information (e.g., using on computer to control a remote display). We per...

In most of the research on pseudo-haptic feedback, subjects’ hands are on the desk and the visual image is provided from a monitor placed in front of them. The setup easily induces sensory conflicts for pseudo-haptic feedback between visual and haptic perception. However, subjects rarely see simultaneously their hand in motion and in a visual display. We report here our preliminary study on pse...

A number of typical Ubiquitous Computing (Ubicomp) interface problems are presented. From these, the requirements needed for a Ubicomp meta-user interface are extracted and a user interface architecture that is based on traditional GUI architectures is introduced. MOTIVATION A recent survey of more than 100 Ubiquitous Computing Applications (Rehman 2001) revealed that a lot of these application...

We have extended the real-time tomographic reflection display of the Sonic Flashlight to a laser guidance system that aims to improve safety and accuracy of needle insertion, especially for deep procedures. This guidance system is fundamentally different from others currently available. Two low-intensity lasers are mounted on opposite sides of a needle aimed parallel to the needle. The needle i...

To enable convincing first-person interactions involving object manipulation, virtual reality systems need to represent the user’s body in the virtual environment. Virtual body parts, particularly the arms and hands, must appear in the correct perceived spatial positions in a first-person view so that users can “take ownership” of them. One current method to achieve this goal is head-mounted di...

How does perceptual learning take place early in life? Traditionally, researchers have focused on how infants make use of information within displays to organize it, but recently, increasing attention has been paid to the question of how infants perceive objects differently depending upon their recent interactions with the objects. This experiment investigates 10-month-old infants' use of brief...