2 : 3 3 (Jongjin Park et al. : Measurement and Modeling of Crosstalk and 3D Visual Fatigue Along with Horizontal Position in Mobile Glassless 3D Display Having Parallax Barrier) (Regular Paper) 19 2, 2014 3 (JBE Vol. 19, No. 2, March 2014) http://dx.doi.org/10.5909/jbe.2014.19.2.215 ISSN 2287-9137 (Online) ISSN 1226-7953 (Print) 3 3 a), a), a) Measurement and Modeling of Crosstalk and 3D Visual Fatigue Along with Horizontal Position in Mobile Glassless 3D Display Having Parallax Barrier JongJin Park a), ShinWoo Kim a), and Hyung-Chul O. Li a) 3D. 3D. 3D. 3D. /,.. Abstract The 3D technology has been spread slowly and the reason would be attributed to the fact that most commercialized 3D displays require 3D glasses. There have been various researches on human factors of glass type 3D display. In this study we measured and modeled crosstalk as well as 3D visual fatigue induced by mobile glassless 3D display. Crosstalk as well as visual fatigue varied depending on horizontal position of the 3D mobile display. Measured crosstalk was relative low around the center of the display and it increased at the side of the display. Similar results were found in the measurement of 3D visual fatigue and discomfort. These results imply that human factors should be considered in the process of design and evaluation of mobile 3D displays. Keyword : Mobile 3D display, glassless, crosstalk, horizontal position a) (Department of I/O Psychology, Kwangwoon University) Corresponding Author : (Hyung-Chul O. Li) E-mail: hyung@kw.ac.kr Tel: +82-2-940-5425 [10038745, 3D / ] 2013 ( ). Manuscript received January 15, 2014 Revised March 4, 2014 Accepted March 7, 2014
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(JBE Vol. 19, No. 2, March 2014).,. 100% 50%, 2 50%. 50% 100%. 16... ( 0.1 cd/ ).. 6. 3...,. 3. Fig. 3. Perceived crosstalk as a function of horizontal stimuli position in display F. 5%, p <.05 [14]. ( : F : F(1, 14)=15.8, : p <.005, : F : F(1, 14)=439.8, : p <.000)...,... 3D.,.
2 : 3 3 (Jongjin Park et al. : Measurement and Modeling of Crosstalk and 3D Visual Fatigue Along with Horizontal Position in Mobile Glassless 3D Display Having Parallax Barrier).. [2],[3]., 4 cm 1.3 cm 5 5% 25%.. (LG Optimus Cube), (sweetspot) ( 1.3 ~ 2.7 cm ).... 2,. 2 4., 1.3 cm 2.7 cm. 1. R2 [14]. 1. 2 Table. 1. Parameters and statistics for the model describing perceived crosstalk along with horizontal position in the display Model: Measured eye Variable name Coefficient p value 0.0038 0.000 Left 0.0150 0.000 0.77 0.0057 0.000 0.2668 0.000 Right -0.1324 0.000 0.0158 0.000 0.93. 2: 4. 2 Fig. 4. Perceived crosstalk estimated by a 2nd-order polynomial model 2 1,.,
(JBE Vol. 19, No. 2, March 2014) Likert 7. 2 1. 1. 1. 2. 5. 2 cm 23 mm. 1. 12 mm 1 7 (, 1.3, 2.7, 4 cm ). 5, 7.. 5.... 7. 4. 18 16. 6.. 5. 2 Fig. 5. An example stimulus employed in Experiment 2 3. 45 cm. 6. ( ) Fig. 6. Measured visual fatigue (focus difficulty) as a function of horizontal stimuli position in display
2 : 3 3 (Jongjin Park et al. : Measurement and Modeling of Crosstalk and 3D Visual Fatigue Along with Horizontal Position in Mobile Glassless 3D Display Having Parallax Barrier) (F : F(1, 14)=8.52, : p <.05). 1. 1.3 cm. 4 cm 1., 100%.., 2D.. ( ) 1. 2 3. 7 3. 2. 2. 3. Table. 2. Parameters and statistics for the model describing visual fatigue (focus difficulty) along with horizontal position in the display Model: Variable name Coefficient p value 3.541 0.000-0.535 0.011 0.029 0.024 0.75 7. 3. Fig. 7. Visual fatigue (focus difficulty) estimated by a 3rd-order polynomial model. 3D... [2].. 1. 2,. 1.
(JBE Vol. 19, No. 2, March 2014). 100% 20%. [2],[3]. (Optimus cube),,. 2.. ( 1.3 cm). 1.3 cm., 1. 1 2. 3D.. / [15]. 3D.. [2],....,.. 1 2 1 2. 1 2, 1 3. 3 Table. 3. Parameters and statistics for the model describing measured visual fatigue (focus difficulty) along perceived crosstalk Model: Variable name Coefficient p value 2.37 0.000 8.46 0.005-8.07 0.023 0.6
2 : 3 3 (Jongjin Park et al. : Measurement and Modeling of Crosstalk and 3D Visual Fatigue Along with Horizontal Position in Mobile Glassless 3D Display Having Parallax Barrier) 2. 8 3.. 3D., 50% 100%...,...,...,. (References) 8. 2 Fig. 8. Measured visual fatigue (focus difficulty) as a function of perceived crosstalk and estimated visual fatigue by 2nd-order polynomial model 3D.,. 3D [1] Mendiburu, B. 3D movie making. Focal Express.2009 [2] Dodgson, N. A. Autostereo displays: 3D without glasses. Electronic Information Displays, 1997. [3] Sakamoto, K., Kimura, R., & Takaki, M. (2005, May). Parallax polarizer barrier stereoscopic 3D display systems. In Active Media Technology. Proceedings of the 2005 International Conference. pp. 469-474. 2005 [4] Seuntiëns, P. J. H., Meesters, L. M. J., & IJsselsteijn, W. A. Perceptual attributes of crosstalk in 3D images. Displays, 26(4), pp. 177-183, 2005. [5] Park, J., Li, H. O., & Kim, S. The effects of stilmulus-background contrast, background texture density and screen disparity of stimulus on crosstalk perception, Journal of Broadcast Engineering of Korea, 18(2), pp.225-236, 2013.
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