摘要
通过WiFi传输无线视频时,对视频压缩与解压技术提出了较高的要求,针对校园有线监控长期以来面临的问题以及无线传输技术的发展,为了降低监控成本和设备维修成本,使监控地点的选择更加灵活,使用基于H.264标准的图像编码压缩技术来无线传输视频,为了提高视频图像编码压缩的效率,通过加快DCT变换的运算,利用FFT简化运算提高图像的压缩率,Android平台解压视频时对H.264码流的解码使用软件方式来得到流畅的视频,提出了基于WiFi的校园无线视频监控系统。
When videos are transferred via WiFi,higher requirements of video compression and decompression technology are presented.Considering the problems of the on-campus cable monitoring and the development of the wireless communication technology,in order to reduce monitoring cost and equipment maintenance cost,the choice of monitoring site is more flexible,and the image coding compression technology based on H.264 is used to transmit video wirelessly.In order to improve the efficiency of the video image compression encoding,by accelerating the DCT transform operation,using FFT to simplify the operation to improve the image compression rate,the Android platform decompresses the video when decoding the H.264 stream using the software to get the smooth video,the campus wireless video monitoring system based on WiFi is proposed.
作者
曹芷琪
刘召柱
Cao Zhiqi;Liu Zhaozhu(School of Electrical and Information Engineering,Anhui University of Science and Technology,Huainan Anhui 232001,China)
出处
《信息与电脑》
2017年第13期79-81,共3页
Information & Computer
基金
安徽省安徽理工大学创新训练项目"基于WiFi的Android平台无线视频监控的系统研究"(项目编号:201610361058)
关键词
无线传输
视频压缩与解压
ANDROID平台
wireless transmission
video compression and decompression
Android platform
