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Instability of the perceived world while watching 3D stereoscopic imagery: A likely source of motion sickness symptoms.

Hwang AD, Peli E - Iperception (2014)

Bottom Line: Numerous studies have reported motion-sickness-like symptoms during stereoscopic viewing, but no causal linkage between specific aspects of the presentation and the induced discomfort has been explicitly proposed.Here, we describe several causes, in which stereoscopic capture, display, and viewing differ from natural viewing resulting in static and, importantly, dynamic distortions that conflict with the expected stability and rigidity of the real world.This analysis provides a basis for suggested changes to display systems that may alleviate the symptoms, and suggestions for future studies to determine the relative contribution of the various effects to the unpleasant symptoms.

View Article: PubMed Central - PubMed

Affiliation: Department of Ophthalmology, Schepens Eye Research Institute, Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, USA; e-mail: alex_hwang@meei.harvard.edu.

ABSTRACT
Watching 3D content using a stereoscopic display may cause various discomforting symptoms, including eye strain, blurred vision, double vision, and motion sickness. Numerous studies have reported motion-sickness-like symptoms during stereoscopic viewing, but no causal linkage between specific aspects of the presentation and the induced discomfort has been explicitly proposed. Here, we describe several causes, in which stereoscopic capture, display, and viewing differ from natural viewing resulting in static and, importantly, dynamic distortions that conflict with the expected stability and rigidity of the real world. This analysis provides a basis for suggested changes to display systems that may alleviate the symptoms, and suggestions for future studies to determine the relative contribution of the various effects to the unpleasant symptoms.

No MeSH data available.


Related in: MedlinePlus

Distribution of angular disparities and visual eccentricities of objects when the viewer's position has shifted −0.2 m, 0.0 m, and 0.2 m from the center while fixating on the center object (O5). (a–c) Viewing S3D. (d–f) Natural viewing. With S3D, as a viewer makes continuous head movements from left to right, (a) → (b) → (c), the viewer will perceive the left side of the scene to be moving closer and the right side of the scene to be moving farther, giving the illusion that the whole scene is rotating counter-clockwise in depth. Thus, the viewer will perceive nonexistent rotational motion in the scene, as it seems to turn to follow and face the viewer. However, the same head movements under natural stereo viewing conditions, (d) → (e) → (f), provide changing views of the scene, which is perceived as the unmoving scene moving clockwise. (g) The resulting perceived depth axis rotation as the head moves left with S3D and (h) as the head moves right. (i) The scene remains stable with the same head movements during natural viewing.
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Figure 10: Distribution of angular disparities and visual eccentricities of objects when the viewer's position has shifted −0.2 m, 0.0 m, and 0.2 m from the center while fixating on the center object (O5). (a–c) Viewing S3D. (d–f) Natural viewing. With S3D, as a viewer makes continuous head movements from left to right, (a) → (b) → (c), the viewer will perceive the left side of the scene to be moving closer and the right side of the scene to be moving farther, giving the illusion that the whole scene is rotating counter-clockwise in depth. Thus, the viewer will perceive nonexistent rotational motion in the scene, as it seems to turn to follow and face the viewer. However, the same head movements under natural stereo viewing conditions, (d) → (e) → (f), provide changing views of the scene, which is perceived as the unmoving scene moving clockwise. (g) The resulting perceived depth axis rotation as the head moves left with S3D and (h) as the head moves right. (i) The scene remains stable with the same head movements during natural viewing.

Mentions: Figure 10a–c shows the perceived AD distribution of the displayed stereoscopic images with viewer's head position at 0.2 m left (a), 0.0 m (b), and 0.2 m right (c) from the center. Viewing distance is the same as in the previous examples (3 m). Corresponding AD distribution for the real-world viewing condition is shown in Figure 10d–f.


Instability of the perceived world while watching 3D stereoscopic imagery: A likely source of motion sickness symptoms.

Hwang AD, Peli E - Iperception (2014)

Distribution of angular disparities and visual eccentricities of objects when the viewer's position has shifted −0.2 m, 0.0 m, and 0.2 m from the center while fixating on the center object (O5). (a–c) Viewing S3D. (d–f) Natural viewing. With S3D, as a viewer makes continuous head movements from left to right, (a) → (b) → (c), the viewer will perceive the left side of the scene to be moving closer and the right side of the scene to be moving farther, giving the illusion that the whole scene is rotating counter-clockwise in depth. Thus, the viewer will perceive nonexistent rotational motion in the scene, as it seems to turn to follow and face the viewer. However, the same head movements under natural stereo viewing conditions, (d) → (e) → (f), provide changing views of the scene, which is perceived as the unmoving scene moving clockwise. (g) The resulting perceived depth axis rotation as the head moves left with S3D and (h) as the head moves right. (i) The scene remains stable with the same head movements during natural viewing.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
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Figure 10: Distribution of angular disparities and visual eccentricities of objects when the viewer's position has shifted −0.2 m, 0.0 m, and 0.2 m from the center while fixating on the center object (O5). (a–c) Viewing S3D. (d–f) Natural viewing. With S3D, as a viewer makes continuous head movements from left to right, (a) → (b) → (c), the viewer will perceive the left side of the scene to be moving closer and the right side of the scene to be moving farther, giving the illusion that the whole scene is rotating counter-clockwise in depth. Thus, the viewer will perceive nonexistent rotational motion in the scene, as it seems to turn to follow and face the viewer. However, the same head movements under natural stereo viewing conditions, (d) → (e) → (f), provide changing views of the scene, which is perceived as the unmoving scene moving clockwise. (g) The resulting perceived depth axis rotation as the head moves left with S3D and (h) as the head moves right. (i) The scene remains stable with the same head movements during natural viewing.
Mentions: Figure 10a–c shows the perceived AD distribution of the displayed stereoscopic images with viewer's head position at 0.2 m left (a), 0.0 m (b), and 0.2 m right (c) from the center. Viewing distance is the same as in the previous examples (3 m). Corresponding AD distribution for the real-world viewing condition is shown in Figure 10d–f.

Bottom Line: Numerous studies have reported motion-sickness-like symptoms during stereoscopic viewing, but no causal linkage between specific aspects of the presentation and the induced discomfort has been explicitly proposed.Here, we describe several causes, in which stereoscopic capture, display, and viewing differ from natural viewing resulting in static and, importantly, dynamic distortions that conflict with the expected stability and rigidity of the real world.This analysis provides a basis for suggested changes to display systems that may alleviate the symptoms, and suggestions for future studies to determine the relative contribution of the various effects to the unpleasant symptoms.

View Article: PubMed Central - PubMed

Affiliation: Department of Ophthalmology, Schepens Eye Research Institute, Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, USA; e-mail: alex_hwang@meei.harvard.edu.

ABSTRACT
Watching 3D content using a stereoscopic display may cause various discomforting symptoms, including eye strain, blurred vision, double vision, and motion sickness. Numerous studies have reported motion-sickness-like symptoms during stereoscopic viewing, but no causal linkage between specific aspects of the presentation and the induced discomfort has been explicitly proposed. Here, we describe several causes, in which stereoscopic capture, display, and viewing differ from natural viewing resulting in static and, importantly, dynamic distortions that conflict with the expected stability and rigidity of the real world. This analysis provides a basis for suggested changes to display systems that may alleviate the symptoms, and suggestions for future studies to determine the relative contribution of the various effects to the unpleasant symptoms.

No MeSH data available.


Related in: MedlinePlus