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ACM Transactions on Applied Perception (TAP), Volume 5 Issue 4, January 2009

Guest editorial: Special issue on Applied Perception in Graphics and Visualization (APGV07)
Roland Fleming, Michael Langer
Article No.: 18
DOI: 10.1145/1462048.1462049

A perceptual approach to trimming and tuning unstructured lumigraphs
Yann Morvan, Carol O'sullivan
Article No.: 19
DOI: 10.1145/1462048.1462050

We present a novel perceptual method to reduce the visual redundancy of unstructured lumigraphs, an image based representation designed for interactive rendering. We combine features of the unstructured lumigraph algorithm and image fidelity...

Evaluating the effect of motion and body shape on the perceived sex of virtual characters
Rachel McDonnell, Sophie Jörg, Jessica K. Hodgins, Fiona Newell, Carol O'sullivan
Article No.: 20
DOI: 10.1145/1462048.1462051

In this paper, our aim is to determine factors that influence the perceived sex of virtual characters. In Experiment 1, four different model types were used: highly realistic male and female models, an androgynous character, and a point light...

A local roughness measure for 3D meshes and its application to visual masking
Guillaume Lavoué
Article No.: 21
DOI: 10.1145/1462048.1462052

3D models are subject to a wide variety of processing operations such as compression, simplification or watermarking, which may introduce some geometric artifacts on the shape. The main issue is to maximize the compression/simplification ratio or...

Hybrid image/model-based gaze-contingent rendering
Hunter A. Murphy, Andrew T. Duchowski, Richard A. Tyrrell
Article No.: 22
DOI: 10.1145/1462048.1462053

A nonisotropic hybrid image/model-based gaze-contingent rendering technique utilizing ray casting on a GPU is discussed. Empirical evidence derived from human subject experiments indicates an inverse relationship between a peripherally degraded...

A perceptive evaluation of volume rendering techniques
Christian Boucheny, Georges-Pierre Bonneau, Jacques Droulez, Guillaume Thibault, Stephane Ploix
Article No.: 23
DOI: 10.1145/1462048.1462054

The display of space filling data is still a challenge for the community of visualization. Direct volume rendering (DVR) is one of the most important techniques developed to achieve direct perception of such volumetric data. It is based on...