CAJ | 학술논문

为推动移动流媒体监控领域新技术的开发和应用,针对工程实际问题,提出了一种3 G网络移动流媒体监控系统的图像处理及传输设计方案.系统以WCDMA的3G无线通信网络为传输平台,采用具有强大控制能力的嵌入式和DSP流媒体双处理器为主控芯片和较强通信功能的3G模块EM770W,可以对MPEG-4流媒体流进行高效编码、压缩和实时传输控制,压缩率、分辨率及多种功能可根据需要定制.系统可根据多变的3 G链路网络特性和客户端反馈参数自适应调节媒体速率和媒体流,从而合理利用网络带宽资源,实现鲁棒控制.仿真实验表明,在3 G网络环境下,与传统的ARM或DSP流媒体监控系统相比,本系统在缩短编码压缩时间、节省资源、减少网络拥塞、提高数据处理速度、改善媒体质量和降低功耗等方面具有明显的优越性,在不同的图像分辨率下,本系统编码压缩平均用时可以节省15%~50%.
위추동이동류매체감공영역신기술적개발화응용,침대공정실제문제,제출료일충3 G망락이동류매체감공계통적도상처리급전수설계방안.계통이WCDMA적3G무선통신망락위전수평태,채용구유강대공제능력적감입식화DSP류매체쌍처리기위주공심편화교강통신공능적3G모괴EM770W,가이대MPEG-4류매체류진행고효편마、압축화실시전수공제,압축솔、분변솔급다충공능가근거수요정제.계통가근거다변적3 G련로망락특성화객호단반궤삼수자괄응조절매체속솔화매체류,종이합리이용망락대관자원,실현로봉공제.방진실험표명,재3 G망락배경하,여전통적ARM혹DSP류매체감공계통상비,본계통재축단편마압축시간、절성자원、감소망락옹새、제고수거처리속도、개선매체질량화강저공모등방면구유명현적우월성,재불동적도상분변솔하,본계통편마압축평균용시가이절성15%~50%.
@@@@In order to promote development and application of new technologies in the field of mobile streaming media monitoring system, and to solve the engineering practical problems, in this paper, an image processing and transmission design scheme for 3G network mobile streaming media monitoring system is proposed . The system uses WCDMA 3G wireless communication network as transmission platform, the embedded and DSP stream media dualprocessor of a powerful control ability as master chip, and uses the 3G module EM770W of strong communication functions,so the system can deal MPEG-4 streaming media streams with efficient coding, compression and realtime transmission control, the compression rate, resolution and a variety of functions can be customized according to the needs . The system can adaptively adjust media flow rate and media according to the changing 3G link network characteristics and client feedback parameters, in order to use network bandwidth resources, and achieve robust control . Compared with the traditional ARM or DSP streaming media monitoring system, simulation results show that the system has obvious advantages for reducing compression coding time, saving resources, reducing network congestion, improving data processing speed, improving video quality and reducing power consumption in the 3G network environment, under the condition of different image resolution, the system average time of code compression can save 15%~50%.