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按照我国国民经济的发展趋势，城市交通管理已成为一个不可回避的问题。三维图像检测是交通流量自动检测的主要方法，是急需解决的重要技术问题。文中简介了目前三维图像检测的基本方法和日本在交通流量检测方面的工作，并提出发展我国交通流量自动检测技术的途径。
In accordance with the development trend of our national economy, urban traffic management has become an unavoidable issue. Three-dimensional image detection is the main method of automatic traffic flow detection, which is an important technical problem that needs to be solved urgently. This paper briefly introduces the current basic methods of 3D image detection and Japan’s work on traffic flow detection, and puts forward some approaches to develop the automatic traffic flow detection technology in China.