Littered on the grass, we seemed dingy, urban riff-raff. We defiled the scene, like sardine-tins and paper bags on the seashore.(我們卻好像是一堆骯臟的城市垃圾，被胡亂丟在草地上。如同海灘上的紙袋和沙丁魚罐頭盒一樣敗壞風景。)

This paper focuses on the post-processing algorithm of urban scene range images.(目前，對點云數據后處理算法的研究還不多。)

There are roads, traffic signs, signal lamps, vehicles and pedestrians, building and so on in the urban transport scene.(城市交通環境場景是以武漢市余家頭區域的部分路網為基礎，包括道路、建筑物、信號燈、車輛、行人和建筑物等。)