At one time there were different points of view on the issue which version should Chinese new mobile carriers start with to build 3G core network but with the passing of time directly build 3G core network with R4 structure becomes a undebatable choice .

关于中国的新移动运营商建设3G核心网应以哪一个版本为起点， 业内 曾有不同观点，但随着时间的推移，直接建设R4构架的3G核心网已成为 不 争的选择。

How to capture useful information is undebatable the most important task in such surveillance systems . As compared with traditional detection and surveillance methods such as ground loops computer vision based transportation surveillance system is able to provide more comprehensive information in a faster way .

交通信息的获取 无疑 是 交通监控系统的首要任务，相对于地 感线圈等传统的检测以及监控手段，基于视觉的交通信息监控系统能够更 直观 地提供视觉信息，从而提供更全面更快速的交通信息。