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X-ray vision is a technique where Augmented Reality is used to display occluded real world objects, giving users the impression of being able to see through objects or humans. However, displaying occluded objects means that occlusion is not a reliable ...

Minimally invasive neurosurgery (MIS) involves inserting a medical instrument, e.g., a catheter, through a small incision to target an area inside the patient’s body. Training surgeons to perform MIS is challenging since the surgical site is not ...

As opposed to conventional AR-HUDs, volumetric AR-HUDs provide multiple focal distances which could potentially benefit distance perception. In this work, we investigated the effect of variable and different fixed focus distances on male participants’ ...

In handheld AR, users have only a small screen to see the augmented scene, making decisions about scene layout and rendering techniques crucial. Traditional device-perspective rendering (DPR) uses the device camera's full field of view, enabling fast ...

Achieving a reliable obstacle detection system for small unmanned aerial vehicle (UAV) is very challenging due to its size and weight constraints. Prior works tend to employ the vision sensor as main detection sensor but resulting to high dependency on ...

Despite significant improvements to Virtual Reality (VR) technologies, most VR displays are fixed focus and depth perception is still a key issue that limits the user experience and the interaction performance. To supplement humans’ inherent depth cues ...

Understanding humans’ notion of depth and how they interact with stereoscopic virtual environments is still a challenge. This context encompasses investigation about how features of these environments affect the human perception of depth. This ...

It is often desirable or unavoidable to display Virtual Reality (VR) or stereoscopic content at low brightness. For example, a dimmer display reduces the flicker artefacts that are introduced by low-persistence VR headsets. It also saves power, prolongs ...

Augmented reality (AR) is a constantly growing technology in computer science; it has also been widely used in the medical field. Generally, the required virtual models are superimposed on the natural environments to provide medical imaging data and ...

Virtual Reality (VR) technologies are increasingly being applied to various contexts like those gaming, therapy, training, and education. Several of these applications require high degrees of accuracy in spatial and depth perception. Contemporary VR ...

As virtual reality (VR) headsets with head-mounted displays (HMD) have attracted more and more attention, new research questions have emerged. In virtual reality games, virtual reality movies or virtual reality simulations, maintaining a high degree of ...

Gaze tracking in 3D has the potential to improve interaction with objects and visualizations in augmented reality. However, previous research showed that subjective perception of distance varies between real and virtual surroundings. We wanted to ...

In Handheld Augmented Reality, users look at AR scenes through the smartphone held in their hand. In this setting, having a mid-air pointing device like a pen in the other hand greatly expands the interaction possibilities. For example, it lets users ...

Research spanning psychology, neuroscience and HCI found that depth perception distortion is a common problem in virtual reality. This distortion results in depth compression, where users perceive objects closer than their intended distance. Studies ...

In recent years, the world of computer graphics has made tremendous progress. Several 3D model visualization techniques have emerged and have been introduced in the hardware's. The machines on which are realized the 3D visualization have also evolved. ...

Gaze-Contingent Displays (GCDs) can improve visual search performance on large displays. GCDs, a Level Of Detail (LOD) management technique, discards redundant peripheral detail using various human visual perception models. Models of depth and contrast ...

ChromaDepth glasses are microprism glasses that produce a pop-up effect by combining refraction and diffraction. In this paper, we formulate the relation between the pop-up distance and viewing distance using a mathematical model. Using our model and ...

Walking in environments with stairs and curbs is potentially dangerous for people with low vision. We sought to understand what challenges low vision people face and what strategies and tools they use when navigating such surface level changes. Using ...

Training of robot-assisted minimally invasive surgery often includes supervised practice with a robotic surgical system. In this case, augmented reality can improve the communication between instructor and trainee, for example, by allowing the ...

We present an approach for eliminating the vergence-accommodation conflict, a fundamental cause of discomfort in today's Virtual Reality. We replace traditional lenses in a head-mounted display with a focus-adjustable optical system which provides ...