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VR头戴设备显示屏质量评价方法研究与实践
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作者 杨林 杨宇 +1 位作者 苑晓歌 杨盈昀 《中国传媒大学学报(自然科学版)》 2019年第3期45-50,共6页
目前还没有统一的VR头戴显示设备显示屏质量评价方法,因而无法对不同VR设备显示屏的质量进行对比。本文针对VR头戴式显示设备显示屏尺寸小、视场角大、且需要通过透镜等光学设备成像的特点,参考已有的高清电视监视器的评价指标,对现有... 目前还没有统一的VR头戴显示设备显示屏质量评价方法,因而无法对不同VR设备显示屏的质量进行对比。本文针对VR头戴式显示设备显示屏尺寸小、视场角大、且需要通过透镜等光学设备成像的特点,参考已有的高清电视监视器的评价指标,对现有的测试方式进行了改进,得到适用于VR显示屏的质量评价方法,该方法主要的测试指标为:黑电平亮度、对比度、基准白、基色色度坐标、GAMMA、运动图像拖尾时间等;并依照此方法对市面上常见的十种VR头戴显示设备完成了测试,为VR头戴显示设备的选择提供了依据。 展开更多
关键词 VR头戴示设备 性能测试 显视器
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LCD及其功能膜的市场概况 被引量:1
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作者 杨小钢 《信息记录材料》 2006年第2期24-30,38,共8页
近年来,LCD技术不断发展,其成本不断降低,平板电视开始进入中国城镇居民家中。本文从LCD的结构入手对其构造和相关功能膜的成本进行分析讲解,对LCD部分功能膜的制造和中国市场,以及相关功能膜和面板的国际市场给了一个总体介绍。
关键词 平板显视器 LCD TFT型LCD 偏光片
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虚拟技术在装备研制中的应用
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作者 熊熊 《国防技术基础》 2003年第2期27-28,共2页
在虚拟技术中,“浸入”和“交互性”是虚拟技术赖以生存的两个重要特征。“浸入”是指参与者的一种直觉感受,在虚拟环境中参与者必须是自始至终存在的,而且在整个交互过程中一直发挥作用,其整个身心的感受和客观现实世界完全一样。“交... 在虚拟技术中,“浸入”和“交互性”是虚拟技术赖以生存的两个重要特征。“浸入”是指参与者的一种直觉感受,在虚拟环境中参与者必须是自始至终存在的,而且在整个交互过程中一直发挥作用,其整个身心的感受和客观现实世界完全一样。“交互性”是指参与者用人类熟悉的感知和操作方式,与虚拟环境中的各种客体进行相互交流。 一、虚拟技术系统的硬件构成 虚拟技术生成系统是一个人和机器组成的闭环系统。其中人是虚拟环境的用户,即为虚拟环境的接受者与作用者,他用自身的视觉、听觉、嗅觉、触觉与行为动作去作用于虚拟环境及其中的虚拟对象。机器部分主要是生成与变换虚拟环境景象的超高速处理以及人与计算机输入输出信息的接口设备,又称交互设备,它包括头盔显示器、数据手套与数据服以及现实引擎这3个主要部分。 展开更多
关键词 虚拟技术 装备研制 应用 头盔显视器 数据手套 数据服 现实引擎
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关于帽子的异想天开
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作者 张炜 《少年儿童研究》 2004年第2期55-55,共1页
帽子各式各样,但我发明这种叫“样样通”的帽子,是由铝合金做的。
关键词 帽子 显视器 铝合金 电脑 饮料机 发明
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Bit-panel to realize gray-scale control of synchronous VGA display by passive OLED matrix 被引量:1
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作者 ZHANG Jue-min JIANG Xue-yin ZHANG Zhi-lin 《Optoelectronics Letters》 EI 2006年第2期107-108,共2页
A bit-panel-plus-weight method has been proposed to realize gray-scale control of synchronous VGA display by passive matrix OLED.The presented VGA controller has been fabricated by FPGAs and can achieve a better resul... A bit-panel-plus-weight method has been proposed to realize gray-scale control of synchronous VGA display by passive matrix OLED.The presented VGA controller has been fabricated by FPGAs and can achieve a better result of gray-scale control by a 96*64 PMOLED panel. 展开更多
关键词 VGA 频图形阵列 OLED 矩阵
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Quantifying Design Parameters of Symbology Page for Automotive Head up Display
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作者 Gupta Sharad Karar Vinod +2 位作者 Saini Surender Singh Jaggi Neena Bajpai Phun Phun 《Computer Technology and Application》 2011年第8期658-662,共5页
This paper gives an overview of studies on parameters displayed on the Automotive Head Up Display (A-HUD) including calculation and construction of symbology page based on study results. A study has been made on vit... This paper gives an overview of studies on parameters displayed on the Automotive Head Up Display (A-HUD) including calculation and construction of symbology page based on study results. A study has been made on vital parameters required for car drivers and design calculations have been made based on design parameters like field of view, distance from the design eye position, minimum character size viewable from a distance of 1.5m between driver and the projected image, and optical magnification factor. lhe display format suitable for A-HUD applications depends upon the parameters required to be displayed. The aspect ratio chosen is 4:3. This paper also provides method to design the symbology page embedding six vital parameters with their relative positioning and size considering relative position between display device and optical elements which has been considered with a magnification factor of 2.5. The field of view obtained is 6.7° × 4.8°. 展开更多
关键词 Automotive head up display (A-HUD) MAGNIFICATION symbology character size human factors field of view (FOV). design eye position (DEP).
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Ship detection in optical remote sensing image based on visual saliency and AdaBoost classifier 被引量:10
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作者 王慧利 朱明 +1 位作者 蔺春波 陈典兵 《Optoelectronics Letters》 EI 2017年第2期151-155,共5页
In this paper, firstly, target candidate regions are extracted by combining maximum symmetric surround saliency detection algorithm with a cellular automata dynamic evolution model. Secondly, an eigenvector independen... In this paper, firstly, target candidate regions are extracted by combining maximum symmetric surround saliency detection algorithm with a cellular automata dynamic evolution model. Secondly, an eigenvector independent of the ship target size is constructed by combining the shape feature with ship histogram of oriented gradient(S-HOG) feature, and the target can be recognized by Ada Boost classifier. As demonstrated in our experiments, the proposed method with the detection accuracy of over 96% outperforms the state-of-the-art method. efficiency switch and modulation. 展开更多
关键词 classifier AdaBoost histogram automata symmetric pixel candidate similarity surround segmentation
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Autostereoscopic 3D flat panel display using an LCD-pixel-associated parallax barrier 被引量:1
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作者 陈恩果 郭太良 《Optoelectronics Letters》 EI 2014年第3期191-193,共3页
This letter reports an autostereoscopic three-dimensional (3D) fiat panel display system employing a newly designed LCD-pixel-associated parallax barrier (LPB). The battler's parameters can be conveniently determ... This letter reports an autostereoscopic three-dimensional (3D) fiat panel display system employing a newly designed LCD-pixel-associated parallax barrier (LPB). The battler's parameters can be conveniently determined by the LCD pixels and can help to greatly simplify the conventional design. The optical system of the proposed 3D display is built and simulated to verify the design. For further experimental demonstration, a 508-mm autostereoscopic 3D displayprototype is developed and it presents good stereoscopic images. Experimental results agree well wlth the simulation, which reveals a strong potential for 3D display applications. 展开更多
关键词 Flat panel displays Geometrical optics Liquid crystal displays Optical systems Three dimensional
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