共查询到19条相似文献,搜索用时 156 毫秒
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高清视频编解码芯片选型及压存系统的设计 总被引:1,自引:1,他引:0
介绍了H.264视频编解码芯片MB86H50,Hi3510和一款市场认知度较高的芯片PNX1500,在性能、结构等方面进行对比.以专用视频压缩芯片MB86H50为核心,以PNX1500 DSP为主控制器,设计出集多路高清数字视频压缩编码、存储于一体的专用图像系统,对于高清视频走向监控、信息存储等实际应用具有极大的研究价值. 相似文献
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为了解决标准清晰度监控系统中存在的一些问题,设计了一个基于TMS320DM365的高清视频压缩系统。采用ITU-T的H.264(DM365内嵌硬件压缩器)视频压缩算法,高清模拟视频信号通过专用视频解码芯片TVP7002转换成数字视频信号,在DM365中进行数据压缩,内嵌ARM把数据打包后传到internet,通过PC机软件解码,进行视频播放。实践证明,本编码方案很好的完成了数据压缩及传输,符合设计要求。 相似文献
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设计一种基于ARM的移动视频监控系统,介绍嵌入式系统下视频压缩、编解码库的移植与应用,视频流媒体的传输与控制。系统由视频采集端和移动监控端组成,视频采集端主要功能包括视频数据采集、压缩编码、传输及控制;移动监控端采用Android智能手机借助3G无线网络连接视频采集端,从而实现远程无线视频监控功能。实验结果表明,视频图像清晰、播放流畅、延时小且系统稳定可靠,达到了系统的设计要求。 相似文献
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嵌入式网络视频监控系统是一种以嵌入式技术、视频压缩编码技术和网络传输控制技术为核心的新型视频监控系统,它在稳定性、实时性、处理速度、功能、价格、扩展性等方面与传统的视频监控系统相比有着突出的优势。本文设计了一种以S3C2410微处理器和嵌入式Linux操作系统为核心的先进视频监控系统设备。 相似文献
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How new standards for video compression and new IC chips will change the worlds of computing, broadcasting, and communication is discussed. An explanation of how video compression works is given. The three digital video standards that have been proposed are described. They are the Joint Photographic Experts Group (JPEG) standard for still picture compression, the Consultative Committee on International Telephony and Telegraphy (CCITT) Recommendation H.261 for video teleconferencing, and the Moving Pictures Experts Group (MPEG) for full-motion compression on digital storage media. Some available chip sets are described, and the issue of design flexibility is considered 相似文献
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数字化的嵌入式视频采集系统成为当前视频采集的的主流。该嵌入式视频采集系统以Microsoft Windows CE 5.0操作系统和基于PXA270芯片的硬件平台为核心,实现了对现场的实时视频采集。系统在嵌入式端既可以进行视频的显示也可以进行图像的抓拍,同时视频数据在嵌入式端进行压缩之后通过局域网络传输到PC端,PC作为服务器端,在PC端的软件实现了对视频分析、存储和显示等功能。系统可广泛应用于视频监控的场合。 相似文献
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挖掘机等工程机械需要对施工现场的视觉盲区进行视频监控,确保作业安全.为了满足安全需求,研制了基于i.MX35的挖掘机视频监控系统,使用i.MX35作为视频主处理器、ADV7180作为NTSC/PAL摄像头输出视频的解码芯片、eMMC或PATA接口固态硬盘作为视频存储介质,实现对挖掘机等工程机械作业现场的视频监控、记录与回放等功能,能够显著提高生产效率、保证作业安全,可以广泛应用于挖掘机等工程机械的控制系统中. 相似文献
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R.P. Kleihorst A. van der Werf W.H.A. Brüls W.F.J. Verhaegh E. Waterlander 《The Journal of VLSI Signal Processing》1997,17(2-3):241-253
Only very recently, single-chip MPEG2 video encoders are being reported. They are a result of additional interest in encoding in consumer products, apart from broadcast encoding, where a video encoder contains several expensive chips. Only single-chip solutions are cost-effective enough to enable digital recording for the consumer. The professional broadcast encoders are expensive because they use the full MPEG toolkit to guarantee good image quality, at the lowest possible bit-rate. Some MPEG tools are costly in hardware and these are therefore not feasible in single-chip solutions. This results in higher bit-rates, that can be accepted because of the available channel and storage capacity of the latest consumer storage media, harddisk, digital tape (D-VHS) and Digital Versatile Disk (DVD). A consumer product is I.McIC, a single-chip MPEG2 video encoder. It operates in ML@SP mode which can be decoded by all MPEG2 decoders. The IC is highly-integrated, as it contains motion-estimation and compensation, adaptive temporal noise filtering and buffer/bit-rate control. The high-throughput functions of the MPEG algorithm are mapped onto pipelined dedicated hardware, whereas the remaining functions are processed by an application-specific instruction-set processor. Software for this processor can be downloaded, in order to suit the IC for different applications and operating conditions. The IC consists of several communicating processors which were designed using high-level synthesis tools, PHIDEO and DSP Station. 相似文献
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