The fastextraction of the watersheds based on DEM saves manpower and material resources greatly, which is feasible according to efficiency and precision.
基于DEM的流域的快速提取，大大节省了的人力、物力，从提取的效率和精度来看都是切实可行的。
2
Fast edge extraction and segmentation in noisy image is a difficult problem in real-time image processing.
噪声图象的快速边缘提取和分割是实时图象处理中的重要问题。
3
A fast moving object extraction method working in MPEG compressed domain is proposed in this paper.