Study on Outline Eztraction for Ground Buildings in High Resolution SAR Images
This paper analyses the visual characteristics of ground buildings in high resolution SAR images:the Lshaped echoes resulted from layerover and corner reflection effects give expression to the information of location and height of buildings. Therefore,to vectorize the L-shaped outline of the buildings has a great value in the field of city mapping.Focusing on L-shaped echoes,this paper investigates an outline vectorization algorithm for buildings.Firstly,the method counters the image after segmentation,then gets the main direction of buildings based on Hough Transform. After using polygon approaches on the outline,finally,the method adopts piecewise linear fitting by least-square algorithm and constructs 3-D model of buildings.Experiments on SAR images show that this approach is much fast in extraction of ground buildings with convenience and practicality.
L-shaped echoes Hough Transform Polygon approach Vectorization
Yan Li Xiaoguang Cao Hongjian You
Image Processing Center,Beihang University,Beijing 100191,China Institute of Electronics,Chinese Academy of Sciences,Beijing 100190,China
国际会议
2009 2nd Asian-Pacific Conference on Synthetic Aperture Radar(第二届亚太合成孔径雷达会议)
西安
英文
813-816
2009-10-26（万方平台首次上网日期，不代表论文的发表时间）