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ACM Transactions on Applied Perception (TAP), Volume 8 Issue 1, October 2010

Evaluation of force and torque magnitude discrimination thresholds on the human hand-arm system
M. Vicentini, S. Galvan, D. Botturi, P. Fiorini
Article No.: 1
DOI: 10.1145/1857893.1857894

This article reports on experiments about haptic perception aimed at measuring the force/torque differential thresholds applied to the hand-arm system. The experimental work analyzes how force is sent back to the user by means of a 6...

Quantifying fidelity for virtual environment simulations employing memory schema assumptions
Nicholaos Mourkoussis, Fiona M. Rivera, Tom Troscianko, Tim Dixon, Rycharde Hawkes, Katerina Mania
Article No.: 2
DOI: 10.1145/1857893.1857895

In a virtual environment (VE), efficient techniques are often needed to economize on rendering computation without compromising the information transmitted. The reported experiments devise a functional fidelity metric by exploiting research on...

Proxemics with multiple dynamic characters in an immersive virtual environment
Joan Llobera, Bernhard Spanlang, Giulio Ruffini, Mel Slater
Article No.: 3
DOI: 10.1145/1857893.1857896

An experiment was carried out to examine the impact on electrodermal activity of people when approached by groups of one or four virtual characters at varying distances. It was premised on the basis of proxemics theory that the closer the approach...

An empirical pipeline to derive gaze prediction heuristics for 3D action games
Matthias Bernhard, Efstathios Stavrakis, Michael Wimmer
Article No.: 4
DOI: 10.1145/1857893.1857897

Gaze analysis and prediction in interactive virtual environments, such as games, is a challenging topic since the 3D perspective and variations of the viewpoint as well as the current task introduce many variables that affect the distribution of...

A supervised combination strategy for illumination chromaticity estimation
Bing Li, Weihua Xiong, De Xu, Hong Bao
Article No.: 5
DOI: 10.1145/1857893.1857898

Color constancy is an important perceptual ability of humans to recover the color of objects invariant of light information. It is also necessary for a robust machine vision system. Until now, a number of color constancy algorithms have been...

Perceptually guided high-fidelity rendering exploiting movement bias in visual attention
Jasminka Hasic, Alan Chalmers, Elena Sikudova
Article No.: 6
DOI: 10.1145/1857893.1857899

A major obstacle for real-time rendering of high-fidelity graphics is computational complexity. A key point to consider in the pursuit of “realism in real time” in computer graphics is that the Human Visual System (HVS) is a...

User-based evaluation of data-driven haptic rendering
Raphael Höver, Massimiliano Di Luca, Matthias Harders
Article No.: 7
DOI: 10.1145/1857893.1857900

In this article, the data-driven haptic rendering approach presented in our earlier work is assessed. The approach relies on recordings from real objects from which a data-driven model is derived that captures the haptic properties of the object....

Investigating the performance of path-searching tasks in depth on multiview displays
Djamel Hassaine, Nicolas S. Holliman, Simon P. Liversedge
Article No.: 8
DOI: 10.1145/1857893.1857901

Multiview auto-stereoscopic displays support both stereopsis and head motion parallax depth cues and could be superior for certain tasks. Previous work suggests that a high viewpoint density (100 views/10cm at the eye) is required to convincingly...