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71.
Yu‐Ta Chen Shau‐Wei Hsu Bao‐Jen Pong Mang Ou‐Yang Cheng‐Chung Lee 《Journal of the Society for Information Display》2013,21(6):231-238
This work presents an image displacement measurement by using a box pattern and the edge spread function analysis in the polarized based stereoscopic displays. The measurement determines to identify three factors (i.e., box size, image displacement, and spatial frequency response (SFR)) from the box patterns. The polarized based stereoscopic displays might sacrifice pixels for producing 3D images, which might produce errors in the image displacement and then affect the depth perception indirectly. Based on the measurement, the errors can be quantified by using the three factors. Owing to the light leakage distorting the edge spread function to obtain an inferior SFR, exactly how light leakage affects the edge spread function can be resolved on the basis of the SFR results, especially at a frequency (1/display pixel) of 1.9 in the case of the horizontal displacement. Light leakage also induces the error of the box height in even and odd intervals of the vertical displacements more than 2 pixels and 0.5 pixels, respectively. The image displacement measurement provides a simple and comprehensive means of evaluating the optical characteristics, disparity, and sharpness of the stereoscopic displays, via the three factors. 相似文献
72.
73.
The liberalization of television markets and the emergence of commercial channels has changed the position of public television, bringing an end to monopolies. Public television now competes for audiences with private television. In this paper, the authors analyze the changes to the market position of public television in Germany, Spain, France, the United Kingdom (UK), and Italy between 1995 and 2019. In this 25-year period, all of these countries have had a liberalized TV market. The aim of this paper is to demonstrate the ways in which public television competes with commercial television, assessing the consequences of this on market power. This analysis allows us to detect similarities and dissimilarities between public television and television markets in large Western European countries. The results show the decline of the market share of public television in all countries, except Germany. Furthermore, public television has remained market leading in all countries, with the exception of Spain. One of the ways to compete with commercial television is to start new public channels and acquire a large audience. 相似文献
74.
《Displays》2016
Human 3D perception provides an important clue to the removal of redundancy in stereoscopic 3D (S3D) videos. Because objects outside the binocular fusion limit cannot be fused on retina, the human visual system (HVS) makes them blur according to the depth-of-focus (DOF) effect to increase the binocular fusion limit and suppress diplopia, i.e. double vision. Based on human depth perception, we propose a disparity-based just-noticeable-difference model (DJND) to save bit-rate and improve visual comfort in S3D videos. We combine the DOF blur effect with conventional JND models in the pixel domain into DJND. Firstly, we use disparity information to get the average disparity value of each block. Then, we integrate the DOF blur effect into luminance JND (LJND) by a selective low pass Gaussian filter to minimize the visual stimulus in S3D videos. Finally, we incorporate disparity information into the filtered JND models to obtain DJND. Experimental results demonstrate that the proposed method successfully improves both image quality and visual comfort in viewing S3D videos without increasing the bit-rate. 相似文献
75.
阐述了三网融合的起源和意义,介绍了三网融合的路径,分析了三网融合给广播电视网络带来的机遇和挑战,并提出相应策略。 相似文献
76.
Marja Salmimaa Jyrki Kimmel Tero Jokela Peter Eskolin Toni Järvenpää Petri Piippo Kiti Müller Jarno Satopää 《Journal of the Society for Information Display》2018,26(2):98-104
A system for assisting in microneurosurgical training and for delivering interactive mixed reality surgical experience live was developed and experimented in hospital premises. An interactive experience from the neurosurgical operating theater was presented together with associated medical content on virtual reality eyewear of remote users. Details of the stereoscopic 360‐degree capture, surgery imaging equipment, signal delivery, and display systems are presented, and the presence experience and the visual quality questionnaire results are discussed. The users reported positive scores on the questionnaire on topics related to the user experience achieved in the trial. 相似文献
77.
目前,我国已基本具备进一步开展三网融合的技术条件、网络基础和市场空间,加快推进三网融合已进入关键时期。基于此,主要对三网融合技术的概念、关键技术以及广电网络的技术发展进行了分析探讨。 相似文献
78.
电影成为了我们生活中不可或缺的一项休闲项目,大到电影院,小到个人家庭,我们经常能够看到电影的身影,甚至对于一些影迷来说,为了等待一部电影能够做到茶不思饭不想,然而对于电影来说,除了夸张的特效和完美的演技之外,还需要高水平的配音,从翻译配音到替代配音,这些配音的演员们需要对配音的技巧进行合理的展示和对情感的表达进行完美的诠释. 相似文献
79.
单向数字电视系统业务单一,不能满足人们的需要,时移电视系统应运而生。改变了人们的收视习惯,完善了数字电视的功能。重点介绍库车县广播电视局22路时移电视节目系统的组成,22路时移电视节目的制作及注意事项。 相似文献
80.
详细介绍了湖南广播电视台直播两岸游泳健儿横渡台湾海峡的技术案例,分析了在台湾海峡进行高清电视移动直播的技术难点,提出了利用移动微波、“动中通”卫星传输技术解决海上移动直播的具体方案,通过实技操作,获得了满意效果. 相似文献