Visual comfort enhancement study based on visual attention detection for stereoscopic displays

2016 ◽  
Vol 24 (10) ◽  
pp. 633-640 ◽  
Author(s):  
Zhenping Xia ◽  
Cheng Cheng ◽  
Xiaohua Li
Keyword(s):  
Visual Attention ◽  
Visual Comfort ◽  
Stereoscopic Displays

Leveraging visual attention and neural activity for stereoscopic 3D visual comfort assessment

2016 ◽  
Vol 76 (7) ◽  
pp. 9405-9425 ◽  
Author(s):  
Qiuping Jiang ◽  
Feng Shao ◽  
Gangyi Jiang ◽  
Mei Yu ◽  
Zongju Peng
Keyword(s):  
Visual Attention ◽  
Neural Activity ◽  
Visual Comfort ◽  
Stereoscopic 3D

Visual comfort in 2D/3D modes of glasses-type stereoscopic displays

2013 ◽  
Vol 21 (2) ◽  
pp. 94-102 ◽  
Author(s):  
Chen Hung-Shing ◽  
Huang Chung-Cheng ◽  
Luo Ronnier
Keyword(s):  
Visual Comfort ◽  
Stereoscopic Displays

A Functional Rôle for Illusory Colour Spreading in the Control of Focused Visual Attention

Perception ◽  
1997 ◽  
Vol 26 (11) ◽  
pp. 1397-1411 ◽  
Author(s):  
Greg Davis ◽  
Jon Driver
Keyword(s):  
Visual Attention ◽  
Functional Role ◽  
Amodal Completion ◽  
Focused Attention ◽  
Stereo Disparity ◽  
Stereoscopic Displays ◽  
Early Stages ◽  
Entire Object ◽  
Modal Completion

In cases of modal completion, illusory colour spreading fills in the surface of a subjectively completed shape. In amodal completion, shapes are likewise completed, but now behind a partial occluder, so that filling in of illusory colour to the completed region no longer arises. We consider the possible functional effects that illusory colour spreading may exert on later stages of vision, and argue that comparisons of modal with amodal completion may be particularly revealing in this regard. It is hypothesised that cueing the inducers of a modally completed object should attract attention to the entire object, including the completed region, owing to the colour spreading there. By contrast, changes to the inducers of a comparable amodally completed object should only attract attention to the inducing regions themselves. This prediction is supported by findings in two experiments with stereoscopic displays, with control conditions ruling out nonattentional accounts, or explanations in terms of stereo disparity alone rather than the presence versus absence of illusory colour. We argue that illusory colours get filled in at quite early stages during modal completion, precisely so that later stages of vision, such as focused attention, can then be driven by the completed regions in the same way as for uniform regions that are physically present in the image.

scholarly journals Classifying EEG Signals during Stereoscopic Visualization to Estimate Visual Comfort

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Jérémy Frey ◽  
Aurélien Appriou ◽  
Fabien Lotte ◽  
Martin Hachet
Keyword(s):  
Adaptive Systems ◽  
Event Related Potentials ◽  
Stereoscopic Vision ◽  
Computer Interface ◽  
Visual Comfort ◽  
Eeg Signals ◽  
Stereoscopic Displays ◽  
Related Potentials ◽  
Left And Right ◽  
Stereoscopic Visualization

With stereoscopic displays a sensation of depth that is too strong could impede visual comfort and may result in fatigue or pain. We used Electroencephalography (EEG) to develop a novel brain-computer interface that monitors users’ states in order to reduce visual strain. We present the first system that discriminates comfortable conditions from uncomfortable ones during stereoscopic vision using EEG. In particular, we show that either changes in event-related potentials’ (ERPs) amplitudes or changes in EEG oscillations power following stereoscopic objects presentation can be used to estimate visual comfort. Our system reacts within 1 s to depth variations, achieving 63% accuracy on average (up to 76%) and 74% on average when 7 consecutive variations are measured (up to 93%). Performances are stable (≈62.5%) when a simplified signal processing is used to simulate online analyses or when the number of EEG channels is lessened. This study could lead to adaptive systems that automatically suit stereoscopic displays to users and viewing conditions. For example, it could be possible to match the stereoscopic effect with users’ state by modifying the overlap of left and right images according to the classifier output.

Visual Spatial Attention in Migraine Sufferers in Postictal and Interictal Phases: An Event-Related Potential Study

2001 ◽  
Vol 15 (1) ◽  
pp. 22-34 ◽  
Author(s):  
D.H. de Koning ◽  
J.C. Woestenburg ◽  
M. Elton
Keyword(s):  
Cerebral Cortex ◽  
Visual Attention ◽  
Migraine Attack ◽  
Spatial Attention ◽  
Event Related Potential ◽  
Significant Enhancement ◽  
Pathophysiological Mechanism ◽  
Attention Task ◽  
Visual Spatial Attention ◽  
Visual Spatial

Migraineurs with and without aura (MWAs and MWOAs) as well as controls were measured twice with an interval of 7 days. The first session of recordings and tests for migraineurs was held about 7 hours after a migraine attack. We hypothesized that electrophysiological changes in the posterior cerebral cortex related to visual spatial attention are influenced by the level of arousal in migraineurs with aura, and that this varies over the course of time. ERPs related to the active visual attention task manifested significant differences between controls and both types of migraine sufferers for the N200, suggesting a common pathophysiological mechanism for migraineurs. Furthermore, migraineurs without aura (MWOAs) showed a significant enhancement for the N200 at the second session, indicating the relevance of time of measurement within migraine studies. Finally, migraineurs with aura (MWAs) showed significantly enhanced P240 and P300 components at central and parietal cortical sites compared to MWOAs and controls, which seemed to be maintained over both sessions and could be indicative of increased noradrenergic activity in MWAs.

Visual Attention: Fitting It All Together

1997 ◽  
Vol 42 (6) ◽  
pp. 501-503
Author(s):  
Kyle R. Cave
Keyword(s):  
Visual Attention
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