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彩色扫描地形图中街区式居民地的自动识别

Automatic Recognition of Hatched Residential Areas in Color Scanned Topographical Maps

  • 摘要: 为自动识别彩色扫描地形图中使用晕线填充绘制的街区式居民地,首先通过Gabor滤波检测晕线得到居民地候选区;然后在候选区中利用曲线跟踪算法识别居民地轮廓;最后进行线性插值连接和几何校正,以解决居民地轮廓不闭合和道路两侧居民地整齐排列问题.通过对5幅典型的居民地样本的实验。论证了文中方法的有效性和实用性.

     

    Abstract: For automatic recognition of residential areas filled with hatched lines in color scanned topographical maps,Gabor filters are firstly used to detect hatched lines with their texture features and find the candidate residential areas.Then in these candidate areas,the contours of residential areas are extracted by employing the curve tracking algorithm.Next,linear interpolation and geometrical emendation are utilized respectively to solve the problem of unclosed residential areas and arrange the residential areas along the same road in order.Finally,experimental results on five representative samples demonstrate the validity and applicability of the proposed method.

     

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