ArcObject 栅格矢量化

　　正常来说，只要在arcmap中能实现的，用二次开发都能实现。基于这个原则，如果你打算实现某个功能，可以先在arcmap上先试试能不能行得通，当然有些需要算法支持的处理过程只能先写代码在测试了。由于工作需要自动矢量化，在arcmap中可以实现，具体操作大家可以去网上找一下。

 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     }

需要添加ArcScan拓展，在矢量化的过程中需要设置前景色、背景色以及矢量化中心线还是轮廓，具体设置方法可以参考官方帮助文档Developer Help for .Net查找ArcScan Namespace Contents

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

posted on 2018-04-28 10:34  听，风声  阅读(458)  评论(2)    收藏  举报

导航