Optimizing Time-Multiplexing Auto-Stereoscopic Displays With a Genetic Algorithm

Liang, Haowen; An, Senzhong; Wang, Jiahui; Zhou, Yangui; Fan, Heng; Krebs, Peter; Zhou, Jianying

doi:10.1109/jdt.2014.2314138

Cited by 36 publications

(11 citation statements)

References 28 publications

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“…Here, the latter scheme is adopted. A new dynamic synchronized backlight technique [27,28] is proposed and demonstrated to eliminate the temporal crosstalk. As shown in Fig.…”

Section: Optimization Techniques For Crosstalkmentioning

confidence: 99%

Illumination Optics in Emerging Naked-Eye 3d Display (Invited Review)

Zhang¹,

Wang²,

Zhou³

et al. 2017

PIER

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Abstract-Illumination optics in emerging naked-eye 3D display, especially in time-spatial multiplexing, or directional backlight naked-eye 3D display system, is systematically examined. Key issues in directional backlight system include: 1) Directional transmission of the left-and right-eye images to the corresponding viewing zone with small crosstalk; 2) The luminance on the screen should be homogeneous even for the viewers moving around. In this paper, we propose an adaptive optimization solution based on root mean square (RMS) for the design of illumination optics of the naked-eye 3D system. Based on the designed free-form backlight illumination, the overall design schemes for both single-user and multi-user naked-eye 3D display are proposed and demonstrated. By utilizing the novel dynamic synchronized backlight technique, the temporal crosstalk is effectively brought into control. The display defects such as the dark bands appearing at the joints of the lens array or at the middle of the Fresnel lens are simulated numerically and tested experimentally, hence providing effective design guidelines for the optical components as well as their fabrication error tolerance. Additionally, we propose a continuous backlight technique to improve the luminance homogeneity. Furthermore, a quantitative evaluation mechanism for the moiré pattern based on the Fourier analysis method, by introducing the contrast sensitivity function (CSF), is presented. A novel arrangement of a quasirandom RGB sub-pixel array is proposed to reduce the visibility of moiré pattern. As a result, full HD glassless 3D display suitable for glassless virtual and augmented realities is demonstrated with an unprecedented display quality.

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“…Here, the latter scheme is adopted. A new dynamic synchronized backlight technique [27,28] is proposed and demonstrated to eliminate the temporal crosstalk. As shown in Fig.…”

Section: Optimization Techniques For Crosstalkmentioning

confidence: 99%

Illumination Optics in Emerging Naked-Eye 3d Display (Invited Review)

Zhang¹,

Wang²,

Zhou³

et al. 2017

PIER

Self Cite

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“…Our laboratory has also begun to develop and evaluate a screening system based on directional backlight autostereoscopy technology. The display can control the amount of crosstalk to be less than 3% (19)(20)(21)(22), which can enable rapid screening assessments for both monocular and binocular vision. Second, the instrument can preserve the resolution of the LCD panel (1920*1080) (19), which means that a single pixel is the smallest unit of this test, and the minimum measurable stereo acuity can reach 57 seconds of arc at 1 m, which meets the clinical standard for stereo tests (a threshold value of 60").…”

Section: Introductionmentioning

confidence: 99%

Rapid, accurate, multifunctional and self-assisted vision assessment and screening with interactive desktop autostereoscopy

Li¹,

Zhong²,

Wang³

et al. 2021

Ann Transl Med

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Background: This study aimed to develop an interactive vision screening tool based on desktop autostereoscopy and evaluate its feasibility for testing visual acuity, colour vision, stereo vision and binocular balance clinically.Methods: An interactive desktop autostereoscopy vision test was developed making it remarkably convenient for individuals to undergo multiple visual function assessments in a single test. With this rapid screening process, an individual's visual acuity, colour vision, stereo vision and binocular balance can be assessed within several minutes. A total of 155 healthy subjects were enrolled to compare the clinical repeatability, accuracy, inter-visit variability, likeability and efficiency between the autostereoscopy and traditional method. Results: In the repeatability test, the visual acuity measured with autostereoscopy was 0.045±0.018 and 0.035±0.018 (P=0.702) for the first and second tests, respectively. The mean logarithm of the Minimum Angle of Resolution (logMAR) visual acuities measured with the Early Treatment Diabetic Retinopathy Study (EDTRS) chart and autostereoscopy test were 0.04±0.02 and 0.05±0.02, respectively, which were not significantly different (P=0.849). The correlation between these two kinds of tests was statistically significant (Spearman correlation coefficient =0.829, P<0.001). The results for colour vision, stereo vision, and binocular vision are presented, and the effectiveness of the autostereoscopic method is supported with qualitative data comparing its results with those of the traditional methods. In the likeability test, the EDTRS chart and autostereoscopy test had scores of 2.21±0.53 and 3.04±0.07, while the traditional and autostereoscopy tests for colour vision, stereo vision, and binocular vision had scores of 2.02±0.59 and 3.36±0.93, respectively (P<0.001). Regarding visual fatigue, the mean scores were 0.69±0.04 and 0.42±0.04 (P<0.001) with the EDTRS chart and autostereoscopy test, respectively. Regarding work efficiency, the average testing times per person was 59.65±0.66 and 48.92±0.86 s (P<0.001) with the EDTRS chart and autostereoscopy test, respectively. Conclusions:The autostereoscopy test was conclusively shown to be valid, efficient and repeatable for the measurement of visual acuity, colour vision, stereo vision, and binocular vision, and the process was subjectively well-liked and comfortable.

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“…In the first case, the 2D image reach one eye at different times, exploiting the persistence of the human visual system to give 3D perception. This technique usually needs spatial light modulators and active shutters [ 10 ] or special backlights [ 11 ] or simply dynamic displays [ 12 ]. The main advantage is the full resolution of the displayed images, while some common problems are moiré patterns [ 13 ], crosstalk [ 14 ] and flicker [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Liquid Crystal Microlenses for Autostereoscopic Displays

et al. 2016

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Three-dimensional vision has acquired great importance in the audiovisual industry in the past ten years. Despite this, the first generation of autostereoscopic displays failed to generate enough consumer excitement. Some reasons are little 3D content and performance issues. For this reason, an exponential increase in three-dimensional vision research has occurred in the last few years. In this review, a study of the historical impact of the most important technologies has been performed. This study is carried out in terms of research manuscripts per year. The results reveal that research on spatial multiplexing technique is increasing considerably and today is the most studied. For this reason, the state of the art of this technique is presented. The use of microlenses seems to be the most successful method to obtain autostereoscopic vision. When they are fabricated with liquid crystal materials, extended capabilities are produced. Among the numerous techniques for manufacturing liquid crystal microlenses, this review covers the most viable designs for its use in autostereoscopic displays. For this reason, some of the most important topologies and their relation with autostereoscopic displays are presented. Finally, the challenges in some recent applications, such as portable devices, and the future of three-dimensional displays based on liquid crystal microlenses are outlined.

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Optimizing Time-Multiplexing Auto-Stereoscopic Displays With a Genetic Algorithm

Cited by 36 publications

References 28 publications

Illumination Optics in Emerging Naked-Eye 3d Display (Invited Review)

Illumination Optics in Emerging Naked-Eye 3d Display (Invited Review)

Rapid, accurate, multifunctional and self-assisted vision assessment and screening with interactive desktop autostereoscopy

Liquid Crystal Microlenses for Autostereoscopic Displays

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