The Perceptual Consequences of Curved Screens

Flat panels are by far the most common type of television screen. There are reasons, however, to believe that curved screens create a greater sense of immersion, reduce distracting reflections, and minimize some perceptual distortions that are commonplace with large televisions. To examine these possibilities, we calculated how curving the screen affects the field of view and the probability of seeing reflections of ambient lights. We find that screen curvature has a small beneficial effect on field of view and a large beneficial effect on the probability of seeing reflections. We also collected behavioral data to characterize perceptual distortions in various viewing configurations. We find that curved screens can in fact reduce problematic perceptual distortions on large screens, but that the benefit depends on the geometry of the projection on such screens

Visualization and (Mis)Perceptions in Virtual Reality

Virtual Reality (VR) technologies are now being widely adopted for use in areas as diverse as surgical and military training, architectural design, driving and flight simulation, psychotherapy, and gaming/entertainment. A large range of visual displays (from desktop monitors and head-mounted displays (HMDs) to large projection systems) are all currently being employed where each display technology offers unique advantages as well as disadvantages. In addition to technical considerations involved in choosing a VR interface, it is also critical to consider perceptual and psychophysical factors concerned with visual displays. It is now widely recognized that perceptual judgments of particular spatial properties are different in VR than in the real world. In this paper, we will provide a brief overview of what is currently known about the kinds of perceptual errors that can be observed in virtual environments (VEs). Subsequently we will outline the advantages and disadvantages of particular visual displays by foc using on the perceptual and behavioral constraints that are relevant for each. Overall, the main objective of this paper is to highlight the importance of understanding perceptual issues when evaluating different types of visual simulation in VEs

Collaborative Human-Computer Interaction with Big Wall Displays - BigWallHCI 2013 3rd JRC ECML Crisis Management Technology Workshop

The 3rd JRC ECML Crisis Management Technology Workshop on Human-Computer Interaction with Big Wall Displays in Situation Rooms and Monitoring Centres was co-organised by the European Commission Joint Research Centre and the University of Applied Sciences St. Pölten, Austria. It took place in the European Crisis Management Laboratory (ECML) of the JRC in Ispra, Italy, from 18 to 19 April 2013. 40 participants from stakeholders in the EC, civil protection bodies, academia, and industry attended the workshop. The hardware of large display areas is on the one hand mature since many years and on the other hand changing rapidly and improving constantly. This high pace developments promise amazing new setups with respect to e.g., pixel density or touch interaction. On the software side there are two components with room for improvement: 1. the software provided by the display manufacturers to operate their video walls (source selection, windowing system, layout control) and 2. dedicated ICT systems developed to the very needs of crisis management practitioners and monitoring centre operators. While industry starts to focus more on the collaborative aspects of their operating software already, the customized and tailored ICT applications needed are still missing, unsatisfactory, or very expensive since they have to be developed from scratch many times. Main challenges identified to enhance big wall display systems in crisis management and situation monitoring contexts include: 1. Interaction: Overcome static layouts and/or passive information consumption. 2. Participatory Design & Development: Software needs to meet users’ needs. 3. Development and/or application of Information Visualisation & Visual Analytics principle to support the transition from data to information to knowledge. 4. Information Overload: Proper methods for attention management, automatic interpretation, incident detection, and alarm triggering are needed to deal with the ever growing amount of data to be analysed.JRC.G.2-Global security and crisis managemen

Virtually Sensuous (Geographies): Towards a Strategy for Archiving Multi-user Experiential and Participatory Installations

This paper explores potential strategies for the audio-visual documentation of a multi-user choreographic digital installation entitled Sensuous Geographies using VR technologies. The installation was interactive, fully immersive and participatory, with the general public initiating the details of the installation’s sonic and visual worlds. At the time of the making of Sensuous Geographies, the means of documenting participatory installations in action was limited to video documentation and photographs, which represent a third-person perspective. This article suggests that new forms of technology provide an opportunity to archive interactive choreographic installations in such a way that the choreographic forms and embodied experience they generate can be re-presented in audiovisual form to historians and audiences of the future. This article expands on a conference presentation of the same title given at the DocPerform2 Symposium, City University. London in November 2017

A comparison between preference judgments of curvature and sharpness in architectural façades

Can curvature drive preference, perceived familiarity, complexity, stability and approachability for architectural façades? In this study, we generated four versions of the same reference building, varying only the amount of curvature introduced in the façade. Participants’ judgments were measured using three experimental methodologies. Multidimensional scaling on forced choices showed that the curved façade was the most preferred. Multidimensional unfolding on ranking task showed that the majority of participants expressed higher preferences for the curved façade compared to the sharp-angled and rectilinear ones. Ratings on different psychological variables provided supporting evidence for curvature significantly influencing liking and approachability judgments. Results from image analyses –using a dynamical model of the visual cortex and a model that characterizes discomfort in terms of adherence to the statistics of natural images – matched behavioural data. We discuss the implications of the findings on our understanding of human preferences, which are intrinsically dynamic and influenced by context and experience.PostprintPeer reviewe

Towards 3-D Sound: Spatial Presence and the Space Vacuum

This chapter demonstrates the evolution of relationships between sound design and music in cinematic representations of the interstellar space vacuum. Mera provides a framework for understanding how audiences believe they are physically present in the represented environment and argues that, in the late 2000s, we move towards three-dimensional (3-D) sound, an aesthetic and technical extension of the superfield and the ultrafield as defined by Chion and Kerins, respectively. 3-D Sound’s primary characteristic is the emancipation of music from a fixed sound-stage spatialization, resulting in greater fluidity between sound design and music. This chapter examines the relationship between two types of spatial presence, articulating both the audience’s suspension of disbelief within a film’s narrative world and the spatial presence of sound and music within a multichannel cinema environme