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Simultaneous measurement of lens accommodation and convergence in natural and artificial 3D vision |
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| Authors: | Tomoki Shiomi Keita Uemoto Takehito Kojima Shunta Sano Hiromu Ishio Hiroki Takada Masako Omori Tomoyuki Watanabe Masaru Miyao |
| Affiliation: | 1. Graduate School of Information Science, Nagoya University, , Nagoya, Japan;2. Fukuyama City University, , Fukuyama, Japan;3. University of Fukui, , Fukui, Japan;4. Kobe Women's University, , Kobe, Japan;5. Aichi Gakuin University, , Nagoya, Japan |
| Abstract: | Recent advances in 3D technology have been accompanied by increasing complaints of visual fatigue. The usual explanation for such fatigue is that accommodation and convergence are mismatched during stereoscopic vision. The aim of this study was to measure fixation distances between lens accommodation and convergence in young subjects while they viewed real objects and 3D video clips. Measurements were made using an original instrument. The 3D video clips were presented to subjects using a liquid crystal shutter glass system. The results showed that when viewing real objects, the diopter values of subjects' accommodation and convergence were similar and changed periodically. This measurement method was thus considered to be appropriate for the measurement of stereoscopic vision. We also investigated lens accommodation and convergence when subjects viewed 3D video clips. Both accommodation and convergence were found to move along with the virtual position of 3D video clips. Therefore, there was little discrepancy between accommodation and convergence during the viewing of 3D images. |
| Keywords: | simultaneous measurement accommodation convergence 3D stereoscopic vision |