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引言作为高速公路机电工程重要子系统之一的视频监控系统,经历了模拟、模数混合及全数字等多次技术变迁。近年来,为满足智能化应用的需求,保障高速公路畅通及高效运行,高清视频监控系统越来越受到重视。随着通信技术的不断发展和数字流媒体技术的日益成熟,高速公路监控系统采用高清传输的技术条件已经具备。然而,如何构建一个可以满足实际应用需求的高清视频监控系统成为了建设方、设计单位及设备厂商面临的全新挑战。
INTRODUCTION Video surveillance system, one of the important subsystems of expressway electromechanical engineering, has gone through many technological changes such as analog, analog-digital mixing and all-digital. In recent years, in order to meet the needs of intelligent applications and ensure smooth and efficient operation of the expressway, HD video surveillance systems are gaining more and more attention. With the continuous development of communication technology and the increasing maturity of digital streaming media technology, the technical conditions of using HD transmission for the expressway monitoring system are already available. However, how to build a high-definition video surveillance system that meets the needs of practical applications has become a brand new challenge for constructors, designers and equipment manufacturers.