ArcObject 栅格矢量化

　　正常来讲，只要在arcmap中能实现的，用二次开发都能实现。基于这个原则，若是你打算实现某个功能，能够先在arcmap上先试试能不能行得通，固然有些须要算法支持的处理过程只能先写代码在测试了。因为工做须要自动矢量化，在arcmap中能够实现，具体操做你们能够去网上找一下。

 1         public void Vectorize(ref IRasterLayer rasterLayer, ref IFeatureLayer polyLayer, string strWorkspacePath)  2  {  3             IVectorization pVectorization = ArcMap.Application.FindExtensionByName("ESRI ArcScan Tools") as IVectorization;  4             IVectorizationLayers vLayers = pVectorization as IVectorizationLayers;  5 
 6             vLayers.CurrentLayer = rasterLayer;  7             INotifyGeometryFound notifyGeom = new FoundGeom(polyLayer);  8             try
 9  { 10                 IWorkspaceFactory pWF = new ShapefileWorkspaceFactory(); 11                 IWorkspace pWS = pWF.OpenFromFile(strWorkspacePath, 0); 12                 UID uid = new UIDClass(); 13                 uid.Value = "esriEidtor.Editor"; 14                 IEditor edit = ArcMap.Application.FindExtensionByCLSID(uid) as IEditor; 15  edit.StartEditing(pWS); 16                 IMxDocument mxDoc = ArcMap.Application.Document as IMxDocument; 17                 pVectorization.Vectorize(false, mxDoc.ActiveView.Extent, notifyGeom, null, null); 18                 edit.StopEditing(true); 19  } 20             catch (Exception ex) 21  { 22  MessageBox.Show(ex.Message); 23  } 24         }

 

 1  public class FoundGeom : INotifyGeometryFound  2  {  3  IFeatureLayer m_pPolyLayer;  4         public FoundGeom(IFeatureLayer featureLayer)  5  {  6             m_pPolyLayer = featureLayer;  7  }  8         void INotifyGeometryFound.AddGeometry(IGeometry shape, double LineWidth)  9  { 10             if (shape is IPolygon) 11  { 12                 IFeature pfeature = m_pPolyLayer.FeatureClass.CreateFeature(); 13                 pfeature.Shape = shape; 14  pfeature.Store(); 15  } 16 
17  } 18     }

须要添加ArcScan拓展，在矢量化的过程当中须要设置前景色、背景色以及矢量化中心线仍是轮廓，具体设置方法能够参考官方帮助文档Developer Help for .Net查找ArcScan Namespace Contents

 转载：http://www.cnblogs.com/tttttye-cnblogs/articles/8966259.html