Assessment of spatial perception for a multi-layer volumetric display: the effect of exocentric and egocentric distance on relative depth judgements

Tatjana Pladere; Mara Delesa-Velina; Vita Konosonoka; Karola Panke; Gunta Krumina

doi:10.1117/12.2560251

26 February 2020 Assessment of spatial perception for a multi-layer volumetric display: the effect of exocentric and egocentric distance on relative depth judgements

Tatjana Pladere, Mara Delesa-Velina, Vita Konosonoka, Karola Panke, Gunta Krumina

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Proceedings Volume 11304, Advances in Display Technologies X; 113041F (2020) https://doi.org/10.1117/12.2560251
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

Three-dimensional images on multiple depth layers of the volumetric display provide the physiological depth cues which ensure the high precision of depth judgements at close viewing distances and enhance the user experience. However, the contribution of physiological cues declines with an increase of viewing distance (egocentric distance), and the human spatial perception varies depending on the inter-stimuli distance (exocentric distance). We conducted a psychophysical experiment to test the perception of three-dimensional images rendered on the volumetric display depending on exocentric and egocentric stimuli distance. The constant angular size visual stimuli were displayed on different depth layers of the optical element at three eccentricities in a random order. In 4AFC tasks, observers were required to indicate the closest stimulus. The decline in performance was evident at the largest tested exocentric distance, and it became more pronounced with an increase of egocentric distance. However, no performance differences manifested themselves when stimuli were located close to each other. Namely, the correct relative depth judgements were given quickly regardless of slight changes in the egocentric distance. We discuss how the viewing distance and spatial layout of stimuli facilitate perception of three-dimensional images on the volumetric display.

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Tatjana Pladere, Mara Delesa-Velina, Vita Konosonoka, Karola Panke, and Gunta Krumina "Assessment of spatial perception for a multi-layer volumetric display: the effect of exocentric and egocentric distance on relative depth judgements", Proc. SPIE 11304, Advances in Display Technologies X, 113041F (26 February 2020); https://doi.org/10.1117/12.2560251

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KEYWORDS

Visualization

3D volumetric display

3D displays

3D image processing

Optical components

3D volumetric displays

Statistical analysis

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