OBJECTIVE We tested whether the method of sound delivery affects people's ability to integrate information from multiple modalities when they are walking and using a head-mounted display (HMD). BACKGROUND HMDs increasingly support mobile work. Human operators may benefit from auditory support when using an HMD. However, it is unclear whether sound is better delivered publicly in free field or...

Head-mounted displays (HMDs) have the potential to overcome some of the technological limitations of currently existing automotive head-up displays (HUDs), such as the limited field of view and the restrictive boundaries of the windshield. However, in a formative study, we identified other, partially known problems with HMDs regarding content stability and occlusion. As a counter-measure we pro...

In this paper, we propose and design a new Head Mounted Display (HMD) that provides a large field of view with a high resolution insert. Previously, this type of HMDs has been designed using mechanical or sequential scanning devices. Our HMD uses only electronic devices that can be easily integrated with the optical components. We describe the design principles and envisioned applications of ou...

We built a video see-through head-mounted display with zero eye offset from commercial components and a mount fabricated via rapid prototyping. The orthoscopic HMD’s layout was created and optimized with a software simulator. We describe simulator and HMD design, we show the HMD in use and demonstrate zero parallax.

A correct spatial registration of Optical See-Through HeadMounted Displays (OST-HMD) w.r.t. a user’s eye(s) is an essential problem for any AR application using the such HMDs (Fig. 1). Maintaining the correct registration demands frequent (re)calibrations for the end-users whenever they move the HMD on their head. Thus, a calibration technique should be simple and accurate for the universal, lo...

soil compaction is a major problem in many parts of the world. the determination of soil compaction profiles requires fast sampling systems to keep pace with the change in soil moisture condition over time. soil cone penetrometers are commonly used for this purpose. a tractor-mounted soil cone penetrometer was designed and fabricated with multiple probes and the ability to determine cone index ...

This paper presents a novel observation system for immersive soccer match taken by multiple video cameras at a real stadium. The user sees the soccer field model in front of his/her eyes from the viewpoint through head-mounted display, while the images of players and a soccer ball are also rendered onto the display. For geometric registration between the soccer field model in the real world and...

This paper presents initial results from an ongoing work to calibrate optical see-through head-mounted displays (HMDs). We have developed a method to calibrate stereoscopic optical see-through HMDs based on the 3D alignment of a target in the physical world with a virtual object in user’s view. This is an extension of the Single Point Active Alignment Method (SPAAM) [28] developed for monocular...