P‐32: <i>Distinquished Student Poster</i>: Comparison of Simultaneous Measurement of Lens Accommodation and Convergence in Natural Vision and 3D Vision

Shiomi, Tomoki; Hori, Hiroki; Uemoto, Keita; Miyao, Masaru; Tanaka, Hiroki; Hasegawa, S.; Omori, Masako; Watanabe, Tetsu; Ishio, Hiromu

doi:10.1002/j.2168-0159.2012.tb06006.x

Cited by 6 publications

(1 citation statement)

References 15 publications

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“…In young people accommodation distances are nearly consistent with the distance from the subject to the object, often located a little beyond the object [8]. Perhaps this originates from the fact that subjects see the index even when the focus is not accurate because of the depth of field.…”

Section: Demonstration Of Accommodation and Convergence Adjustment In...mentioning

confidence: 97%

Measurement of Lens Accommodation and Convergence during the Viewing of 3D Images

Oohashi

Ishio

Okada

et al. 2013

Universal Access in Human-Computer Interaction. User and Context Diversity

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Three-dimensional display technology has developed rapidly in recent years. This has been accompanied by increasing problems of visual complaints such as eye strain. There are also various types of digital signage, in which text information moves on a screen. In this paper, we conducted two experiments for the purpose of easy to read, dynamic characters that pop out when viewing 3D images, and safe and comfortable 3D viewing. We conducted a survey of accommodation and convergence of viewers when they watched a movie with a television opaque projector for large outward projection of characters. We also compared the results of a survey on the readability of characters that pop out and the proportion and the perception of the amount of protrusion. We examined the maximum distance in which subjects' eyes could recognize the 3D character representations without any difficulty or discomfort. The distance of the images as they popped out from the screen as a theoretical virtual target was compared with what the subjects recognized according to each age group. There was no significant difference between the theoretical and observed values in any age groups. In a second experiment, we performed objective measurements of accommodation and convergence for 3D character representation using original instruments. We then compared the values of the measurements of the subjects with the theoretical positions of emergence. When a subject recognized a 3D character representation, the position of his or her accommodative and convergent focus was closer to the theoretical position of the virtual object that projected out from the screen. Nearly all of the subjects recognized the 3D representation at even 3.8 degrees, which was the largest parallax condition. Cognitively, almost all of the subjects viewed the positions of the objects correctly without much difficulty.

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Section: Demonstration Of Accommodation and Convergence Adjustment In...mentioning

confidence: 97%

Measurement of Lens Accommodation and Convergence during the Viewing of 3D Images

Oohashi

Ishio

Okada

et al. 2013

Universal Access in Human-Computer Interaction. User and Context Diversity

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36.3: Effects of 3D Display System on Convergence and Accommodation

Kojima

Uemoto

Okada

et al. 2013

Symp Digest of Tech Papers

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We compared the circular polarizing filter method and liquid crystal shutter method. We were interested in comparing how these methods affect convergence and accommodation, when subjects viewed 3D images. The numeric values for convergence-accommodation with the liquid crystal shutter were very close. However, in the case of the circular polarized filter method, there was discrepancy in the values of convergence and accommodation.

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Measurement of Lens Accommodation During Viewing of DFD Images

Yamakawa

Takada

Date

et al. 2015

Universal Access in Human-Computer Interaction. Access to Interaction

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P‐32: Distinquished Student Poster: Comparison of Simultaneous Measurement of Lens Accommodation and Convergence in Natural Vision and 3D Vision

Abstract: In this study, we invented a method to simultaneously measure lens accommodation and convergence used for natural and 3D vision. We found that there is almost never a difference between natural vision and 3D vision in terms of accommodation and convergence.

Cited by 6 publications

References 15 publications

Measurement of Lens Accommodation and Convergence during the Viewing of 3D Images

Measurement of Lens Accommodation and Convergence during the Viewing of 3D Images

36.3: Effects of 3D Display System on Convergence and Accommodation

Measurement of Lens Accommodation During Viewing of DFD Images

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