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ACM Transactions on Applied Perception (TAP), Volume 2 Issue 3, July 05

Guest Editorial
Holly Rushmeier
Pages: 181-182
DOI: 10.1145/1077399.1077400

Visual cues can be sufficient for triggering automatic, reflexlike spatial updating
Bernhard E. Riecke, Markus Von Der Heyde, Heinrich H. Bülthoff
Pages: 183-215
DOI: 10.1145/1077399.1077401
“Spatial updating” refers to the process that automatically updates our egocentric mental representation of our immediate surround during self-motions, which is essential for quick and robust spatial orientation. To investigate the...

Distance perception in real and virtual environments
Jodie M. Plumert, Joseph K. Kearney, James F. Cremer, Kara Recker
Pages: 216-233
DOI: 10.1145/1077399.1077402
We conducted three experiments to compare distance perception in real and virtual environments. In Experiment 1, adults estimated how long it would take to walk to targets in real and virtual environments by starting and stopping a stopwatch while...

Distance Perception and the Visual Horizon in Head-Mounted Displays
Ross Messing, Frank H. Durgin
Pages: 234-250
DOI: 10.1145/1077399.1077403
Can distance perception be studied using virtual reality (VR) if distances are systematically underestimated in VR head-mounted displays (HMDs)? In an experiment in which a real environment was observed through an HMD, via live video, distances, as...

Manipulating Video Sequences to Determine the Components of Conversational Facial Expressions
Douglas W. Cunningham, Mario Kleiner, Christian Wallraven, Heinrich H. Bülthoff
Pages: 251-269
DOI: 10.1145/1077399.1077404
Communication plays a central role in everday life. During an average conversation, information is exchanged in a variety of ways, including through facial motion. Here, we employ a custom, model-based image manipulation technique to selectively...

Toward Perceptually Realistic Talking Heads: Models, Methods, and McGurk
Darren Cosker, Susan Paddock, David Marshall, Paul L. Rosin, Simon Rushton
Pages: 270-285
DOI: 10.1145/1077399.1077405
Motivated by the need for an informative, unbiased, and quantitative perceptual method for the evaluation of a talking head we are developing, we propose a new test based on the “McGurk Effect.” Our approach helps to identify strengths...

Predicting and Evaluating Saliency for Simplified Polygonal Models
Sarah Howlett, John Hamill, Carol O'Sullivan
Pages: 286-308
DOI: 10.1145/1077399.1077406
In this paper, we consider the problem of determining feature saliency for three-dimensional (3D) objects and describe a series of experiments that examined if salient features exist and can be predicted in advance. We attempt to determine salient...

Collisions and Attention
Carol O'Sullivan
Pages: 309-321
DOI: 10.1145/1077399.1077407
Attention is an important factor in the perception of static and dynamic scenes, which should, therefore, be taken into account when creating graphical images and animation. Recently, researchers have recognized this fact and have been investigating...

Example-Based Color Stylization of Images
Youngha Chang, Suguru Saito, Keiji Uchikawa, Masayuki Nakajima
Pages: 322-345
DOI: 10.1145/1077399.1077408
We describe a new computational approach to stylize the colors of an image by using a reference image. During processing, we take the characteristics of human color perception into account to generate more appealing results. Our system starts by...

Low-Level Image Cues in the Perception of Translucent Materials
Roland W. Fleming, Heinrich H. Bülthoff
Pages: 346-382
DOI: 10.1145/1077399.1077409
When light strikes a translucent material (such as wax, milk or fruit flesh), it enters the body of the object, scatters and reemerges from the surface. The diffusion of light through translucent materials gives them a characteristic visual softness...