| In the contemporary warfare that takes messageization as its feature, how should we collect the message in traditional battleground? This dissertation is chiefly studying on the implementation of remote video monitor system by using of new protocol standards and transmission methods so that its performance is promoted to transform battleground message into fighting capacity.One main work of this dissertation is the design and development of a long-distance video monitoer system on the TCP/IP protocol based on Microsoft DirectShow. We propose a feasible design scheme of long-distance monitor system. A current long-distance video monotor system consists of two parts: Service-end and Client-end. The service-end completes collecting, coding of image, RTP (Real-time Transport Protocol) encapsulation, and long-distance transmition by network. The client-end achieves the receivings, decoding, going back of image. In our solution, the code and compress of image adopt MPEG-4 criterion; the transmition protocol adopts TCP/IP and RTP; the play-back adopts DirectShow's technique to handle video image real-time. In the realization of system, new methods such as the compoenence-based modle, the DirectShow's filter, the video image collection by service-end, the compressed encoding are adopted. In the design, the DirectShow RTP frame is modified. Based on the realization of DirectShow's handle pattern, we may revise the software architecture and function of system by means of adding or deleting the filter, which makes our system have well commonality and extensibility. The RTP real-time transmission protocol is adopt to guarantee the applicability of video monitor system in which the message is transmited on lower bandwidth Internet network.Our experiments demonstrate that our developed system can run steadily and dependablely. Its performances are obviously superior to the traditional video monitor system when video imeges are transmited long-distance. |
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