@article{chagnon-forget_enhanced_2016,

title = {Enhanced Visual-Attention Model for Perceptually Improved 3D Object Modeling in Virtual Environments},

author = {M. Chagnon-Forget and G. Rouhafzay and A. -M. Cretu and S. Bouchard},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84991727567&doi=10.1007%2fs13319-016-0106-7&partnerID=40&md5=136feba48a1aa3ff798619f8d734c956},

doi = {10.1007/s13319-016-0106-7},

issn = {20926731 (ISSN)},

year  = {2016},

date = {2016-01-01},

journal = {3D Research},

volume = {7},

number = {4},

abstract = {Three-dimensional object modeling and interactive virtual environment applications require accurate, but compact object models that ensure real-time rendering capabilities. In this context, the paper proposes a 3D modeling framework employing visual attention characteristics in order to obtain compact models that are more adapted to human visual capabilities. An enhanced computational visual attention model with additional saliency channels, such as curvature, symmetry, contrast and entropy, is initially employed to detect points of interest over the surface of a 3D object. The impact of the use of these supplementary channels is experimentally evaluated. The regions identified as salient by the visual attention model are preserved in a selectively-simplified model obtained using an adapted version of the QSlim algorithm. The resulting model is characterized by a higher density of points in the salient regions, therefore ensuring a higher perceived quality, while at the same time ensuring a less complex and more compact representation for the object. The quality of the resulting models is compared with the performance of other interest point detectors incorporated in a similar manner in the simplification algorithm. The proposed solution results overall in higher quality models, especially at lower resolutions. As an example of application, the selectively-densified models are included in a continuous multiple level of detail (LOD) modeling framework, in which an original neural-network solution selects the appropriate size and resolution of an object. © 2016, 3D Research Center, Kwangwoon University and Springer-Verlag Berlin Heidelberg.},

note = {Publisher: 3D Display Research Center},

keywords = {3-d modeling, 3D modeling, Behavioral research, Complex networks, Interest points, Level of detail, Mesh simplification, Mesh simplifications, Saliency, Three dimensional computer graphics, virtual reality, Visual Attention},

pubstate = {published},

tppubtype = {article}

}

@article{bouchard_modes_2014,

title = {Modes of immersion and stress induced by commercial (off-the-shelf) 3D games},

author = {S. Bouchard and F. Bernier and É. Boivin and T. Guitard and M. Laforest and S. Dumoulin and G. Robillard},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928156971&doi=10.1177%2f1548512912446359&partnerID=40&md5=59116f3611c07948453d1cb5e474dfbb},

doi = {10.1177/1548512912446359},

issn = {15485129},

year  = {2014},

date = {2014-01-01},

journal = {Journal of Defense Modeling and Simulation},

volume = {11},

number = {4},

pages = {339–352},

abstract = {Developing a stress-management training (SMT) system and protocol for soldiers can help them cope better with stress experienced in theatre operations. Using 3D horror games in virtual reality (VR) can present an attractive simulation method for soldiers. This study was conducted to find out whether it is possible to stress soldiers moderately using VR and which technology is more efficient to do so. A total of 47 soldiers returning from Afghanistan played two 3D firstperson shooter (FPS)/horror games (Killing Floor and Left 4 Dead) on three different types of immersive technologies (a 22-inch stereoscopic monitor, a 73-inch stereoscopic TV and a CAVE™). As a control and reference comparison of induced stress, participants were exposed to the Trier Social Stress Test (TSST), a standardized stress-inducing procedure. Results were supporting of our work, devising an effective low-cost and high-buy-in approach to assist in teaching and practicing stress-management skills. Repeated measures analyses of variance (ANOVAs) revealed statistically significant increases in the soldiers’ respiration rates and heart rates while playing the 3D games and during the TSSTs. No significant interactions were found. Increases in physiological arousal among the soldiers were significant when comparing the baseline to the immersion and to the TSST, but not when comparing both stressors. Immersion in 3D games is proposed as a practical and cost-effective option to create a context that allows practicing SMT. © 2013 The Society for Modeling.},

note = {Publisher: SAGE Publications Inc.},

keywords = {3-D videos, Commercial off-the-shelf, Cost effectiveness, Human computer interaction, Human resource management, immersion, Physiological change, physiology, Serious games, Soldiers, Stereo image processing, Stress management, Stress test, Stresses, Stressful emotions, Three dimensional computer graphics, virtual reality},

pubstate = {published},

tppubtype = {article}

}