共查询到19条相似文献,搜索用时 140 毫秒
1.
2.
3.
裸眼3D视频信号转换技术研究 总被引:1,自引:0,他引:1
针对嵌入式裸眼3D设备需要同时在左右眼亚屏幕上显示立体对图像存在数据量较大和视差图像准确处理等问题,仔细研究了左右格式立体图像和液晶显示屏视频信号特点,提出一种ARM与FPGA相结合的视频信号转换系统。ARM系统作为视频播放和外设支持,为FPGA提供立体视频信号源,FPGA作为信号处理的核心,采集、缓存和转换ARM输出的视频数据,以匹配线光源背照明式裸眼3D液晶屏物理结构实现立体显示效果。实验结果表明,系统准确地完成了左右格式立体视频数据分离和融合,能够满足嵌入式裸眼3D设备对视频信号转换的要求。FPGA逻辑设计只使用内部资源实现图像数据缓存和列插值,提高了系统的可靠性并降低了成本。 相似文献
4.
本文从3D技术起源及原理出发,较系统介绍了3D技术发展状况和前景从摆脱特制眼镜的束缚到裸眼3D;从利用人眼的视差特性产生立体感到基于全息影像技术在空间显示真实的3D立体影像;从激光再现全息技术到白光再现全息技术。并对各个时期的技术及其优缺点作出分析和评价。 相似文献
5.
概述了主流3D格式和国际3D标准发展现状,正在申请制定的下一代的3D(裸眼)/多视图中国国家视频标准覆盖3D终端,2D到3D转换软件和转换芯片(IC),以及3D内容制作和存储等,在功能性和可用性上具备较大的优势。随后,较详细地介绍了中国裸眼3D标准的三大档次、技术优势以及推进计划,以期对3D国标的推进起到积极的作用。 相似文献
6.
7.
《电子技术与软件工程》2015,(8)
随着经济的发展,精神生活和物质生活的提高,人们对视觉影像要求越来越高。在电影和电视产业中应运而生诞生了立体成像技术。目前立体成像技术主要以佩戴眼镜等设备为主,其弊端在于会给佩戴者带来不舒适的感觉。为了解决佩戴眼镜所带了的一些列问题,诞生了裸眼3D技术。本文通过使用untiy3D建立游戏模型,在游戏中设立虚拟摄像机制作多视点游戏画面,再通过裸眼3D显示器显示出8视点裸眼3D画面。通过这个方法可以实现动漫游戏的裸眼3D立体显示效果。 相似文献
8.
无需佩戴3D眼镜,就能看到栩栩如生的立体影像,新脱颖而出的裸眼3D技术。让人们摆脱了3D眼镜的束缚,从而轻松获得前所未有的立体视觉感受,这一技术已成为热点,采用裸眼3D技术的产品纷纷出炉,预计在3D游戏、3D动画、3D影视的带动下, 相似文献
9.
介绍了色差式、快门式和偏光式等眼镜式3D技术,以及视差障壁技术、柱状透镜技术、多层显示技术、DFD立体显示技术等裸眼3D技术,对比了各种3D技术的优缺点,还对3D电视机终端市场的现状与趋势进行了分析。 相似文献
10.
11.
Anthony J.T. Lee Han-Pang Chiu Ping Yu 《Journal of Visual Communication and Image Representation》2005,16(6):75
We have proposed a new spatio-temporal knowledge structure called 3D C-string to represent symbolic videos accompanying with the string generation and video reconstruction algorithms. In this paper, we extend the idea behind the similarity retrieval of images in 2D C+-string to 3D C-string. Our extended approach consists of two phases. First, we infer the spatial relation sequence and temporal relations for each pair of objects in a video. Second, we use the inferred relations to define various types of similarity measures and propose the similarity retrieval algorithm. By providing various types of similarity between videos, our proposed similarity retrieval algorithm has discrimination power about different criteria. Finally, some experiments are performed to show the efficiency of the proposed approach. 相似文献
12.
《Journal of Visual Communication and Image Representation》2014,25(4):679-688
3D video services are emerging in various application domains including cinema, TV broadcasting, Blu-ray discs, streaming and smartphones. A majority of the 3D video content in market is still based on stereo video, which is typically coded with the multiview video coding (MVC) extension of the Advanced Video Coding (H.264/AVC) standard or as frame-compatible stereoscopic video. However, the 3D video technologies face challenges as well as opportunities to support more demanding application scenarios, such as immersive 3D telepresence with numerous views and 3D perception adaptation for heterogeneous 3D devices and/or user preferences. The Multiview Video plus Depth (MVD) format enables depth-image-based rendering (DIBR) of additional viewpoints in the decoding side and hence helps in such advanced application scenarios. This paper reviews the MVC + D standard, which specifies an MVC-compatible MVD coding format. 相似文献
13.
14.
2D-to-3D video conversion is a feasible way to generate 3D programs for the current 3DTV industry. However, for large-scale 3D video production, current systems are no longer ade-quate in terms of the time and labor required for conversion. In this paper, we introduce a distributed 2D-to-3D video conversion system that includes a 2D-to-3D video conversion module, architecture of the parallel computation on the cloud, and 3D video cod-ing in the system. The system enables coope-ration among multiple users in the simultane-ous completion of their conversion tasks so that the conversion efficiency is greatly pro-moted. In the experiments, we evaluate the system based on criteria related to both time consumption and video coding performance. 相似文献
15.
三维小波多分等级树视频压缩编码 总被引:2,自引:0,他引:2
提出了基于三维小波多发等级树视频压缩编码方法。通过将原始图象序列进行帧分组,并对每个图象帧组在时间、水平和垂直三维空间上进行小波变换。然后,对变换域的各个空间-时间频率了带按照其方向的不同。构成多个小波等级树,并对每个等级树分别进行SPIHT编码算法。仿真实验表明了该方法的有效性。 相似文献
16.
《Journal of Visual Communication and Image Representation》2014,25(5):943-950
With the rapid development of portable digital video equipment, such as camcorders, digital cameras and smart phones, video stabilization techniques for camera de-shaking are strongly required. The cutting-edge video stabilization techniques provide outstanding visual quality by utilizing 3D motion, while early video stabilization is based on 2D motion only. Recently, a content-preserving warping algorithm has been acknowledged as state-of-the-art thanks to its superior stabilization performance. However, the huge computational cost of this technique is a serious burden in spite of its excellent performance. Thus, we propose a fast video stabilization algorithm that provides significantly reduced computational complexity over the state-of-the-art with the same stabilization performance. First, we estimate the 3D information of the feature points in each input frame and define the region of interest (ROI) based on the estimated 3D information. Next, if the number of feature points in the ROI is sufficient, we apply the proposed ROI-based pre-warping and content-preserving warping sequentially to the input frame. Otherwise, conventional full-frame warping is applied. From intensive simulation results, we find that the proposed algorithm reduces computational complexity to 14% of that of the state-of-the-art method, while keeping almost equivalent stabilization performance. 相似文献
17.
3D video distribution over P2P networks has been thought as a promising way for 3D video entering home. The convergence of scalable 3D video coding and P2P streaming can provide diverse 3D experiences for heterogeneous clients with high distribution efficiencies. However, the conventional chunk segmentation and scheduling algorithms originally aiming at the non-scalable 2D video streaming are not very efficient for scalable 3D video streaming over P2P networks due to the particular data characteristics of scalable 3D video. Based on this motivation, this paper first presents a playback length changeable 3D video chunk segmentation (PLC3DCS) algorithm to provide different error resilience strengths to video and depth as well as layers with different importance levels in the 3D video transmission. Then, a hybrid-priority based chunk scheduling (HPS) algorithm is proposed to be tied in with the proposed chunk segmentation algorithm to further promote the overall 3D video P2P streaming performance. The simulation results show that the proposed PLC3DCS algorithm with the corresponding HPS can increase the success delivery rates of chunks with more important levels, and further improve the user’s quality of 3D experience. 相似文献
18.