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本文阐述了真三维显示技术在目前国内外的发展现状和趋势以及真三维显示的特点,而后针对目前主流的几种真三维系统显示技术进行介绍和分类,最后展望未来真三维系统显示技术的发展。 相似文献
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本文论述了不采用任何视差障壁法和双凸透镜法之类专用玻璃的三维显示器。无论如何,采用这些方法很难获得高分辩率,因为其分辩率受制于障壁或透镜的节距。因此,我们提出了解决这个问题的新方法。这种方法中,从需要的方向上控制背景光,在各个方向上显示出不同的影像。通过依次发迹液晶显示屏(LCD)上光的方向和视差影像就可以提供三维影像。该显示器的分辩率和所使用的LCD的相同,并且不受双凸透镜节距的影响。本文讨论了其显示原理、设计概念和光照系统的特性。 相似文献
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体三维显示技术是三维显示技术的一个重要分支。首先对目前国内外较为成熟的体三维显示技术进行了分类和举例,然后对该技术的特点进行了总结。虽然目前的技术方案仍然存在一定的局限性,但是未来的新方案将会应运而生,并将逐步取代现在的二维显示。 相似文献
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本文的主题是将建筑动画技术应用于房地产的销售过程,这里的建筑动画是一种交互演示的系统.它改变了以往房地产销售过程中通过效果图对客户进行介绍的传统方法,运用生动的动画手段,形象地表现了小区的建筑格局以及周边配套,也可以加入丰富的人物配景以及和生活画面.使静态的画面变成生动的视频动画场景.使客户能够更直观更具体地对小区性况加以了解.论文的主要内容有: 相似文献
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为了实现高分辨率集成成像三维显示,设计了一种基于数码相机实拍的集成成像高分辨率图像采集系统,给出3D图像的深度范围;对实、虚显示模式的图像分辨率进行分析研究。基于集成成像原理用数码相机进行高分辨率的图像采集,由微透镜阵列节距、焦距、物距等参数计算出显示分辨率与显示深度,结合计算机进行图像处理,通过高精度打印图像并与微透镜阵列粘合的方法进行实验验证,给出拍摄参数和显示参数并与传统视差显示模式和集成成像的聚焦显示模式进行比较。在参数匹配较好的情况下,集成成像实、虚显示模式的图像分辨率优于聚焦显示模式和传统视差显示模式,并可采用较宽节距的微透镜阵列,验证了集成成像实、虚显示模式下可实现高分辨率的三维显示。通过集成成像高分辨率图像采集,并以实模式、虚模式显示模式,可获得高分辨率的集成成像三维显示。 相似文献
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移动电子设备已成为最重要的个人交互平台,具有轻薄型态和低功耗特质的裸眼3D显示亦成为重要研究领域。裸眼3D显示能否应用于移动电子设备,也成为3D显示是否能走进千家万户,影响人类生活习惯的一个重要评判标准。文中主要介绍和比较了与移动电子设备兼容的裸眼三维(3D)显示硬件实现方法和技术,主要包括屏障视差技术、柱透镜阵列技术、时空复用技术、集成成像显示、压缩光场显示和向量光场显示技术。文中进一步分析了现有技术的瓶颈与不足,阐释技术瓶颈的主要产生原因和解决途径,并对裸眼3D显示应用于平板显示的未来发展趋势进行了展望。 相似文献
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文章在对VR虚拟体验展厅、VR数字体验馆进行实例分析的基础上,对虚拟现实下产品的三维展示技术进行分析,包括动态环境建模技术、实时三维图形生成技术、立体显示和传感器技术以及系统集成技术。 相似文献
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We investigated whether watching two-dimensional television (2DTV) or three-dimensional television (3DTV) resulted in differences in the brain’s processing of sensory information. We divided 25 participants into 2DTV (n = 13) and 3DTV (n = 12) groups. Participants watched 2DTV or 3DTV for 1, 2, or 3 h on different days. Before and at the end of each session, electroencephalography (EEG) was recorded for 10 min. The Simulation Sickness Questionnaire (SSQ) and the Visual Analog Scale (VAS) were used to assess general discomfort before and after watching. Each frequency band of the resting EEG was transformed into a standardized low-resolution electromagnetic tomographic (sLORETA) image. In the 2DTV group, 2 h of watching increased theta power in the central cortex and 3 h of watching increased beta power in the occipital cortex. In the 3DTV group, 3 h of watching increased delta power in the parahippocampal gyrus and middle frontal cortex. Theta power was significantly higher in the insular cortex after 3 h of 3DTV than after 3 h of 2DTV. SSQ scores were significantly higher after 1 h of 2DTV than after 1 h of 3DTV. Watching 2DTV vs. 3DTV triggered different time-dependent activity patterns. Watching 3DTV for 3 h increased slow-wave activity in the prefrontal cortex, while watching 2DTV increased fast-wave activity in the occipitoparietal cortex. Up to 2 h of 3DTV watching did not cause major changes in fatigue or EEG activity compared with 2DTV. Our findings promise to be useful in designing safety guidelines for watching 3DTV. 相似文献
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在3D技术发展的初期阶段,产品包装展示的主要表现形式是以平面设计展示为主,而在三维技术飞速发展的今天,更多产品展示的三维软件被不断地研发出来,如3DS Max,Maya,Rhino,Solidworks,Pro/E,UG等,在软件操作与制作上可能各有不同,但其展现的3D创意设计却存在一些共性的特征。在新媒体时代,产品展示的方式在不断地发展,如虚拟现实、Web3D等技术的运用,使得产品数字化虚拟展现的方式又进一步贴近消费者的需求。3D创意思维拓展与运用在产品展示设计的教学中显得日益重要,其目的是面对日益变化的行业需求更好地服务教学。 相似文献
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Numerous methods for direction of arrival (DOA) estimation, used in smart antennas have been already reported in previous studies. The precision of DOA estimation depends on the choice of the algorithm and the geometrical configuration of the antenna array. In this work, the performance of new geometrical configurations, i.e. 2D with equal area and 3D with equal volume including circular, square, triangular, hexagonal and star geometries, with equal number of antenna elements, are examined and compared to each other to find the most proper geometry. Monte-Carlo simulations are performed to evaluate the DOA precision of the proposed arrays using the MUSIC algorithm. It is shown that in three cases of comparison including 2D geometries, 3D geometries and 3D rotated geometries, with the star and triangular configurations one achieves better resolution in DOA estimation. It is also revealed that the rotated configurations show lower estimation error compared to normal configurations. 相似文献
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Dimitrios Tzovaras Nikos Grammalidis Michael G. Strintzis 《Signal Processing: Image Communication》1998,11(3):205-230
In the present paper techniques are examined for the coding of the depth map and disparity fields for stereo or multiview image communication applications. It is assumed that both the left and right channels of the multiview image sequence are coded using block- or object-based methods. A dynamic programming algorithm is used to estimate a disparity field between each stereo image pair. Depth is then estimated and occlusions are optionally detected, based on the estimated disparity fields. Spatial interpolation techniques are examined based on the disparity/depth information and the detection of occluded regions using either stereoscopic or trinocular camera configurations. It is seen that the presence of a third camera at the transmitter site improves the estimation of disparities, the detection of occlusions and the accuracy of the resulting spatial interpolation at the receiver. Various disparity field and depth map coding techniques are then proposed and evaluated, with emphasis given to the quality of the resulting intermediate images at the receiver site. Block-based and wireframe modeling techniques are examined for the coding of isolated depth or disparity map information. Further, 2D and 3D motion compensation techniques are evaluated for the coding of sequences of depth or disparity maps. The motion fields needed may be available as a byproduct of block-based or object-based coding of the intensity images. Experimental results are given for the evaluation of the performance of the proposed coding and spatial interpolation methods. 相似文献