Gaze-contingent depth of field in realistic scenes: The user experience

Margarita Vinnikov, Robert S. Allison

Research output: Chapter in Book/Report/Conference proceedingConference contribution

18 Scopus citations

Abstract

Computer-generated objects presented on a display typically have the same focal distance regardless of the monocular and binocular depth cues used to portray a 3D scene. This is because they are presented on a flat screen display that has a fixed physi-cal location. In a stereoscopic 3D display, accommodation (focus) of the eyes should always be at the distance of the screen for clear vision regardless of the depth portrayed; this fixed ac-commodation conflicts with vergence eye movements that the user must make to fuse stimuli located off the screen. This is known as accommodation-vergence conflict and is detrimental for user experience of stereoscopic virtual environments (VE), as it can cause visual discomfort and diplopia during use of a stereoscopic display. It is believed that, by artificially simulating focal blur and natural accommodation, it is possible to compen-sate for the vergence-accommodation conflict and alleviate these symptoms. We hypothesized that it is possible to compensate for conflict with a fixed accommodation cue by adding simulated focal blur according to instantaneous fixation. We examined gaze-contingent depth of field (DOF) when used in stereoscopic and non-stereoscopic 3D displays. We asked our participants to compare different conditions in terms of depth perception, image quality and viewing comfort. As expected, we found that monocular DOF gave a stronger impression of depth than no depth of field, stereoscopic cues were stronger than any kind of monocular cues, but adding depth of field to stereo dis-plays did not enhance depth impressions. The opposite was true for image comfort. People thought that DOF impaired image quality in monocular viewing. We also observed that comfort was affected by DOF and display mode in similar fashion as image quality. However, the magnitude of the effects of DOF simulation on image quality depended on whether people asso-ciated image quality with depth or not. These results suggest that studies evaluating DOF effectiveness need to consider the type of task, type of image and questions asked.

Original languageEnglish (US)
Title of host publicationProceedings of the Symposium on Eye Tracking Research and Applications, ETRA 2014
PublisherAssociation for Computing Machinery
Pages119-126
Number of pages8
ISBN (Print)9781450327510
DOIs
StatePublished - Jan 1 2014
Externally publishedYes
Event8th Symposium on Eye Tracking Research and Applications, ETRA 2014 - Safety Harbor, FL, United States
Duration: Mar 26 2014Mar 28 2014

Publication series

NameEye Tracking Research and Applications Symposium (ETRA)

Other

Other8th Symposium on Eye Tracking Research and Applications, ETRA 2014
CountryUnited States
CitySafety Harbor, FL
Period3/26/143/28/14

All Science Journal Classification (ASJC) codes

  • Computer Vision and Pattern Recognition
  • Human-Computer Interaction
  • Ophthalmology
  • Sensory Systems

Keywords

  • Depth-of-field
  • Gaze-contingent display
  • Visual simulations

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