Change Detection Based on DSM and Image Features in Urban Areas

编号 zgly0000311956

文献类型 期刊论文

文献题名 Change Detection Based on DSM and Image Features in Urban Areas

作者 LIUZhifang  HZANGJianqing  ZHANGZuxun  FANHong 

作者单位 Ph.Dcandidate.InstifuteofImage＆Graphic  SichuanUniversity  Chengdu610064  China 

母体文献 Geo-spatial Information Science;地球空间信息科学学报: 英文版 

年卷期 2003,6(2)

页码 35-41

年份 2003 

分类号 TP751  P23 

关键词 市区  城市管理  地理信息  立体图像  人造物体  空间图像  DSM  遥感图像 

文摘内容 On the basis of atereo image analysis,the change detection of man-made objects in urban areas is in-troduced. Information of the height of man-made objects can be applied to reinforce their change detection. By comparison between the new and old DSMs, the changed regions are extracted. However, our aim is to detect changes of man-made objects in urban area and further in the potental areas by the means of line-feature matching and gradient direction histogram. The experiments based on the aerial images from Japan have proven that the algorithm is correct and efficient。