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We compared face identification by humans and machines using images taken under a variety of uncontrolled illumination conditions in both indoor and outdoor settings. Natural variations in a person's day-to-day appearance (e.g., hair style, facial...
Curve shape and curvature perception through interactive sonification
Miguel A. Alonso-Arevalo, Simon Shelley, Dik Hermes, Jacqueline Hollowood, Michael Pettitt, Sarah Sharples, Armin Kohlrausch
Article No.: 17
In this article we present an approach that uses sound to communicate geometrical data related to a virtual object. This has been developed in the framework of a multimodal interface for product design. The interface allows a designer to evaluate...
Perception and replication of planar sonic gestures
Davide Rocchesso, Stefano Delle Monache
Article No.: 18
As tables, boards, and walls become surfaces where interaction can be supported by auditory displays, it becomes important to know how accurately and effectively a spatial gesture can be rendered by means of an array of loudspeakers embedded in...
Audio, visual, and audio-visual egocentric distance perception by moving subjects in virtual environments
Marc Rébillat, Xavier Boutillon, Étienne Corteel, Brian F. G. Katz
Article No.: 19
We present a study on audio, visual, and audio-visual egocentric distance perception by moving subjects in virtual environments. Audio-visual rendering is provided using tracked passive visual stereoscopy and acoustic...
On the limits of resolution and visual angle in visualization
Christopher G. Healey, Amit P. Sawant
Article No.: 20
This article describes a perceptual level-of-detail approach for visualizing data. Properties of a dataset that cannot be resolved in the current display environment need not be shown, for example, when too few pixels are used to render a data...
How real is real enough? optimal reality sampling for fast recognition of mobile imagery
Antti Oulasvirta, Antti Nurminen, Tiia Suomalainen
Article No.: 21
We present the first study to discover optimal reality sampling for mobile imagery. In particular, we identify the minimum information required for fast recognition of images of directly perceivable real-world buildings displayed on a mobile...