| 结合笔画宽度变换与几何特征集的高分一号遥感图像河流提取 | 
| 张祝鸿, 王保云, 孙玉梅, 李才东, 孙显辰, 张玲莉 | 
| River extraction from GF-1 satellite images combining stroke width transform and a geometric feature set | 
| Zhuhong ZHANG, Baoyun WANG, Yumei SUN, Caidong LI, Xianchen SUN, Lingli ZHANG | 
| 图6 连通区域外接矩形示意图 | 
| Fig.6 Examples of external rectangle | 
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