The Experts below are selected from a list of 5466 Experts worldwide ranked by ideXlab platform
Bin Xu - One of the best experts on this subject based on the ideXlab platform.
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Time-multiplexed Stereoscopic Display with a quantum dot-polymer scanning backlight
Applied Optics, 2019Co-Authors: Bin Xu, Yucheng Bao, Yuanqin Wang, Gangwei Chen, Qinqin Wu, Shuping RenAbstract:We fabricate a time-multiplexed Stereoscopic Display, which is composed of a quantum dot-polymer (QDP) scanning backlight, 120 Hz liquid crystal Display (LCD), and shutter glasses. Blue LEDs, which can excite QDP film to produce white light, are adopted to replace the traditional white LEDs. The QDP scanning backlight, LCD, and shutter glasses can be controlled by the synchronization signal and work together, enabling viewers to obtain parallax views. Crosstalk is about 1%, and luminance through the shutter glasses is higher than 150 nit. The color gamut can be widely extended to 77.98% rather than the traditional 55.75% in the ITU-R Recommendation BT.2020 (Rec.2020) color space, due to the excellent properties of QD material.
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Wide Color Gamut Time-Multiplexed Stereoscopic Display Based on Scanning Backlight Unit Utilizing Sectional Light Guide Plates
IEEE Access, 2019Co-Authors: Bin Xu, Yuanqing WangAbstract:A time-multiplexed Stereoscopic Display with a wide color gamut is fabricated and introduced in this paper. It comprises a scanning backlight unit (SBLU), a 120Hz liquid crystal Display (LCD) panel and a pair of LCD shutter glasses equipped with two switching lens (Manufactured by NVIDIA, Model: 3D VISION 2). We use sectional light guide plates to compress the light angle. We use blue LEDs (Domain wavelength: 450nm) to replace the traditional phosphor white LEDs used in the backlight. The blue LEDs are fixed on the edges of the sectional light guide plates, and the quantum dot-polymer (QDP) film is placed on the surface of sectional plates. The SBLU and auxiliary glasses could work together with the LCD panel. All of these components can be controlled by the vertical synchronization signal transmitted from the graphics card. The color gamut of our prototype is improved. According to ITU-R Recommendation BT.2020 (Rec.2020), the color gamut is widely extended to 77.61%. The Display's ability to express color has been improved by using quantum dot (QD) material. The Display brightness through the switching lens is about 120 nit. The crosstalk decreases to about 0.9%.
Yuanqing Wang - One of the best experts on this subject based on the ideXlab platform.
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Wide Color Gamut Time-Multiplexed Stereoscopic Display Based on Scanning Backlight Unit Utilizing Sectional Light Guide Plates
IEEE Access, 2019Co-Authors: Bin Xu, Yuanqing WangAbstract:A time-multiplexed Stereoscopic Display with a wide color gamut is fabricated and introduced in this paper. It comprises a scanning backlight unit (SBLU), a 120Hz liquid crystal Display (LCD) panel and a pair of LCD shutter glasses equipped with two switching lens (Manufactured by NVIDIA, Model: 3D VISION 2). We use sectional light guide plates to compress the light angle. We use blue LEDs (Domain wavelength: 450nm) to replace the traditional phosphor white LEDs used in the backlight. The blue LEDs are fixed on the edges of the sectional light guide plates, and the quantum dot-polymer (QDP) film is placed on the surface of sectional plates. The SBLU and auxiliary glasses could work together with the LCD panel. All of these components can be controlled by the vertical synchronization signal transmitted from the graphics card. The color gamut of our prototype is improved. According to ITU-R Recommendation BT.2020 (Rec.2020), the color gamut is widely extended to 77.61%. The Display's ability to express color has been improved by using quantum dot (QD) material. The Display brightness through the switching lens is about 120 nit. The crosstalk decreases to about 0.9%.
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Real-time video processing model for Stereoscopic Display system based on FPGA
2012 IEEE 11th International Conference on Signal Processing, 2012Co-Authors: Ning Kang, Yuanqing Wang, Zhaoyang ZhangAbstract:A video processing model is presented which is designed for real-time Stereoscopic Display system based on Field Programmable Gate Array (FPGA). The system makes use of image parallax theory and combines some high speed system design technologies. The hardware platform includes image acquisition, processing and Display parts. Viewers need a pair of stereo glasses to experience Stereoscopic Display technology. This design is verified and has some applicable fields. It features real-time, low-cost and easy-feasibility and fills in a gap of Displaying high definition timely Stereoscopic image with high refresh rate Liquid Crystal Display (LCD) panel.
Birgit Graf - One of the best experts on this subject based on the ideXlab platform.
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Semi-Autonomous Domestic Service Robots: Evaluation of a User Interface for Remote Manipulation and Navigation With Focus on Effects of Stereoscopic Display
International Journal of Social Robotics, 2015Co-Authors: Marcus Mast, Zdeněk Materna, Florian Weisshardt, Georg Arbeiter, Mike Burmester, Pavel Smrž, Michal Španěl, Birgit GrafAbstract:In this article, we evaluate a novel type of user interface for remotely resolving challenging situations for service robots in domestic environments. Our focus is on potential advantages of Stereoscopic Display. The user interface is based on a control architecture that allows involvement of a remote human operator when the robot encounters a problem. It offers semi-autonomous remote manipulation and navigation with low-cost interaction devices, incorporates global 3D environment mapping, and follows an ecological visualization approach that integrates 2D laser data, 3D depth camera data, RGB data, a robot model, constantly updated global 2D and 3D environment maps, and indicators into a single 3D scene with user-adjustable viewpoints and optional viewpoint-based control. We carried out an experiment with 28 participants in a home-like environment investigating the utility of Stereoscopic Display for three types of task: defining the shape of an unknown or unrecognized object to be grasped, positioning the gripper for semi-autonomous reaching and grasping, and navigating the robot around obstacles. Participants were able to successfully complete all tasks and highly approved the user interface in both monoscopic and Stereoscopic Display modes. They were significantly faster under Stereoscopic Display in positioning the gripper. For the other two task types, there was a tendency for faster task completion in stereo mode that would need to be verified in further studies. We did not find significant differences in perceived workload between Display types for any type of task. We conclude that Stereoscopic Display seems to be a useful optional Display mode for this type of user interface but that its utility may vary depending on the task.
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Semi-Autonomous Domestic Service Robots: Evaluation of a User Interface for Remote Manipulation and Navigation With Focus on Effects of Stereoscopic Display
International Journal of Social Robotics, 2015Co-Authors: Marion Mast, Zdeněk Materna, Michal Španěl, Florian Weisshardt, Georg Arbeiter, Marcus Mast, Mike Burmester, Pavel Smrž, Birgit GrafAbstract:In this article, we evaluate a novel type of user interface for remotely resolving challenging situations for service robots in domestic environments. Our focus is on potential advantages of Stereoscopic Display. The user interface is based on a control architecture that allows involvement of a remote human operator when the robot encounters a problem. It offers semi-autonomous remote manipulation and navigation with low-cost interaction devices, incorporates global 3D environment mapping, and follows an ecological visualization approach that integrates 2D laser data, 3D depth camera data, RGB data, a robot model, constantly updated global 2D and 3D environment maps, and indicators into a single 3D scene with user-adjustable viewpoints and optional viewpoint-based control. We carried out an experiment with 28 participants in a home-like environment investigating the utility of Stereoscopic Display for three types of task: defining the shape of an unknown or unrecognized object to be grasped, positioning the gripper for semi-autonomous reaching and grasping, and navigating the robot around obstacles. Participants were able to successfully complete all tasks and highly approved the user interface in both monoscopic and Stereoscopic Display modes. They were significantly faster under Stereoscopic Display in positioning the gripper. For the other two task types, there was a tendency for faster task completion in stereo mode that would need to be verified in further studies. We did not find significant differences in perceived workload between Display types for any type of task. We conclude that Stereoscopic Display seems to be a useful optional Display mode for this type of user interface but that its utility may vary depending on the task. © 2014, Springer Science+Business Media Dordrecht.
Jianying Zhou - One of the best experts on this subject based on the ideXlab platform.
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Full Resolution, Low Crosstalk, and Wide Viewing Angle Auto-Stereoscopic Display With a Hybrid Spatial-Temporal Control Using Free-Form Surface Backlight Unit
Journal of Display Technology, 2015Co-Authors: Yangui Zhou, Jiahui Wang, Haowen Liang, Peter Krebs, Jianbang Su, Kunyang Li, Jianying ZhouAbstract:A full resolution, low crosstalk and wide viewing angle auto-Stereoscopic Display is demonstrated with the use of a novel free-form surface backlight (FFSB) technique, in conjunction with a hybrid spatial and temporal control scenario. The overall crosstalk coming from adjacent channels is shown to be lower than 5% even at a wide viewing angle, and minimum achievable crosstalk can be as small as 2.41%. The key element design giving rise to achieving the full viewing angle greater than 45 degrees is also presented.
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Optimizing Time-Multiplexing Auto-Stereoscopic Displays With a Genetic Algorithm
IEEE\ OSA Journal of Display Technology, 2014Co-Authors: Haowen Liang, Yangui Zhou, Jiahui Wang, Peter Krebs, Senzhong An, Jianying ZhouAbstract:A figure-of-merit (FOM) of an auto-Stereoscopic Display system is introduced and adopted to characterize the system performance. This FOM takes into account of the ratio of the signal to the noise arising from the crosstalk from the adjacent channels as well as the brightness uniformity of viewing areas; hence, it is directly related to the glasses-free 3D viewing comfort. With a steadily improving FOM as a target, the genetic algorithm is applied to optimize the optical system, giving rise to substantially improved characteristics of an auto-Stereoscopic Display system. The numerical simulation is verified with an experiment of a multi-view auto-Stereoscopic Display unit. It is shown that the system can provide a high fidelity of the Display effect with the crosstalk ratio being reduced from around 5% to nearly 1%, which is a very low value obtainable for an auto-Stereoscopic system.
T. Takeda - One of the best experts on this subject based on the ideXlab platform.
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Evaluation of Stereoscopic Display task environment by measurement of accommodation responses
Proceedings of 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 1996Co-Authors: Nobuyuki Hiruma, K. Hashimoto, T. TakedaAbstract:Stereoscopic Display systems have many applications in biomedical engineering. In this study, the influence of visual tasks using Stereoscopic Displays with relatively short viewing distance to the eye's accommodation was measured. An increase in the raise time of accommodation response and accommodation error was observed. This was significant especially after tasks with stimuli appearing nearer than the screen. Appropriate task management such as giving appropriate rest time is necessary in order to avoid eye stress.