In an experiment with a computer game environment, we studied the effect of Field-of-View (FOV) on cybersickness. In particular, we examined the effect of differences between the internal FOV (IFOV, the FOV which the graphics generator is using to render its images) and the external FOV (EFOV, the FOV of the presented images as seen from the physical viewpoint of the observer). We hypothesized ...

XML has been the de facto standard for digital editions for years, but its serious limitations include an inability to represent overlapping markup and the encoding of multiple annotation hierarchies. With emerging graph database technologies we have the opportunity to develop new approaches. In this paper the advantages and modelling principles of graph-based digital editions will be discussed.

UNLABELLED Uniformity testing is performed daily to ensure adequate camera performance before clinical use. The aim of this study is to assess the reliability of Beth Israel Deaconess Medical Center's locally built, centralized, Web-based uniformity analysis system by examining the differences between manufacturer and Web-based National Electrical Manufacturers Association integral uniformity c...

We present a new optical design for head-mounted displays (HMD) that has an exceptionally wide field of view (FOV). It can cover even the full human FOV. It is based on seamless lenses and screens curved around the eyes. We constructed several compact and lightweight proof-of-concept prototypes of the optical design. One of them far exceeds the human FOV, although the anatomy of the human head ...

One of our first observations concerning Ant Wars was that ant’s field of view (FOV) is rather small (24 fields when excluding the actual ant’s position). If one considers food locations only and takes into account rotational invariance and symmetry, there are 2/4/2 = 2 = 2097152 unique FOV states (when ignoring the constraint placed on the amount of food and the existence of opponent). As FOV ...

In this preliminary study, we utilized the Webcam with bigger field of view (FOV) in order to overcome existing limitations of conventional navigation stereo cameras with small FOV thereby improving marker detection capacity. In results, we demonstrated that FOVs of conventional camera and the Webcam were 885 mm and 1,685 mm, respectively which indicates better FOV of the Webcam. Consequently, ...

A novel calibration method for non-overlapping cameras is proposed in this paper. A LCD screen is used as a phase target to display two groups of orthogonal phase-shifted sinusoidal patterns during the calibration process. Through a mirror reflection, the phase target is captured by the cameras respectively. The relations between each camera and the phase target can be obtained according the pr...

objectives this study aimed to assess the effect of object position in the field of view (fov) of cbct on detection of vrfs in teeth with intra-canal posts. materials and methods the crowns of 60 extracted premolar teeth were cut at the level of cementoenamel junction (cej). root canals were filled with gutta-percha and filling of the coronal 2/3 of the root canals was subsequently removed to f...

OBJECTIVE To investigate the image quality (IQ) and apparent diffusion coefficient (ADC) of reduced field-of-view (FOV) di-ffusion-weighted imaging (DWI) of pancreas in comparison with full FOV DWI. MATERIALS AND METHODS In this retrospective study, 2 readers independently performed qualitative analysis of full FOV DWI (FOV, 38 × 38 cm; b-value, 0 and 500 s/mm(2)) and reduced FOV DWI (FOV, 28...