Interactive Arts and Technology, School of (SIAT)

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The School of Interactive Arts and Technology, SIAT, is located at the Surrey campus of SFU. There are two subcollections in SIAT. Please see below.

Dynamic Intelligent Lighting for Directing Visual Attention in Interactive 3D Scenes

Peer reviewed: 
No, item is not peer reviewed.
Date created: 
2009
Abstract: 

Recent enhancements in real-time graphics have facilitated the design of high fidelity game environments with complex 3D worlds inhabited by animated characters. Under such settings, it is hard, especially for the untrained eyes, to attend to an object of interest. Neuroscience research as well as film and theatre practice identified several visual properties, such as contrast, orientation, and color that play a major role in channeling attention. In this paper, we discuss an adaptive lighting design system called ALVA (Adaptive Lighting for Visual Attention) that dynamically adjusts the lighting color and brightness to enhance visual attention within game environments using features identified by neuroscience, psychophysics, and visual design literature. We also discuss some preliminary results showing the utility of ALVA in directing player’s attention to important elements in a fast paced 3D game, and thus enhancing the game experience especially for non-gamers who are not visually trained to spot objects or characters in such complex 3D worlds.

Document type: 
Article
File(s): 

Spatialized Sound Influences Biomechanical Self-Motion Illusion ("Vection")

Peer reviewed: 
No, item is not peer reviewed.
Date created: 
2010
Abstract: 

Although moving auditory cues have long been known to induce self-motion illusions (“circular vection”) in blindfolded participants, little is known about how spatial sound can facilitate or interfere with vection induced by other non-visual modalities like biomechanical cues. To address this issue, biomechanical circular vection was induced in seated, stationary participants by having them step sideways along a rotating floor (“circular treadmill”) turning at 60 /s (see Fig. 1, top). Three research hypotheses were tested by comparing four different sound conditions in combination with the same biomechanical vection-inducing stimulus.

Document type: 
Article

A control strategy for a distributed power generation microgrid application with voltage and current controlled source converter

Author: 
Peer reviewed: 
No, item is not peer reviewed.
Date created: 
2010-12
Abstract: 

This paper presents a pseudodroop control structure integrated within a microgrid system through distributed power generation (DPG) modules capable to function in off-grid islanded, genset-connected, and grid-connected modes of operation. System efficiency has an important role in order to harvest the maximum available renewable energy from dc or ac sources while providing power backup capability. A control strategy is proposed in off-grid islanded mode method based on the microgrid line-frequency control as agent of communication for energy control between the DPG modules. A critical case is where the ac load demand could be lower than the available power from the photovoltaic solar array, where the battery bank can be overcharged with unrecoverable damage consequences. The DPG voltage-forming module controls the battery charge algorithm with a frequency-generator function, and the DPG current source module controls its output current through a frequency-detection function. The physical installation between DPG modules is independent, since no additional communication wiring is needed between power modules, which represent another integration advantage within the microgrid-type application.

Document type: 
Article