一、前语

C#之Winform + Halcon完成图画直线查找功用
1、创立计量模型 HMetrologyModel
2、增加计量目标到线丈量
3、设置计量目标参数
4、设置查找参数：边际阈值、边际挑选、过度办法
5、显现丈量点

二、运转成果

三、代码

	double r1 = 50.00, c1 = 300.0;
	double r2 = 150.0, c2 = 300.0;
	double measureLength1 = 10, measureLength2 = 10;
	double measureSigma   = 1,  measureThreshold = 10;
	HTuple genParamName = new HTuple();
	HTuple genParamValue = new HTuple();
 	//*创立计量模型
 	HMetrologyModel metrologyHandle =new HMetrologyModel();
	//*增加计量目标到线丈量()
 	metrologyHandle.AddMetrologyObjectLineMeasure(r1,c1,r2,c2, 
 	measureLength1, measureLength2, measureSigma, measureThreshold,
	genParamName, genParamValue);
 	//*设置计量目标参数
 	metrologyHandle.SetMetrologyObjectParam( 0, "measure_length1",100);
 	metrologyHandle.SetMetrologyObjectParam(0, "measure_length2",20);
 	metrologyHandle.SetMetrologyObjectParam(0, "measure_distance",10);
 	//*边际阈值
 	metrologyHandle.SetMetrologyObjectParam(0, "measure_threshold",10);
 	//*边际挑选
 	metrologyHandle.SetMetrologyObjectParam(0, "measure_select","first");
 	//*过度办法
	metrologyHandle.SetMetrologyObjectParam(0, "measure_transition","positive");
	//ho_image为自己创立的HImage目标实例 HImage ho_image = new HImage()
	//
 	metrologyHandle.ApplyMetrologyModel(ho_image);
 	//*显现丈量点
 	HXLDCont contours = new HXLDCont();
 	contours = metrologyHandle.GetMetrologyObjectMeasures(0, "all", out HTuple row, out HTuple column);
 	HXLDCont xldCont = new HXLDCont();
 	xldCont.GenCrossContourXld(row, column, 10, 0.785398);
 	HTuple result = metrologyHandle.GetMetrologyObjectResult(0, "all", "result_type", 
                new HTuple(new string[] { "row_begin", "column_begin", "row_end", "column_end" }));
 	//*取得丈量直线
 	double row_begin = result[0];
 	double column_begin = result[1];
 	double row_end = result[2];
 	double column_end = result[3];
 	HXLDCont xldLine = new HXLDCont();
 	xldLine.GenContourPolygonXld(
 	new HTuple(new double[] { row_begin, row_end }),
 	new HTuple(new double[] { column_begin, column_end })
	 );
 	//设置色彩并显现
 	//自己封装的办法
 	hWTool.DispObj(contours,"blue");//丈量的直线规模
 	hWTool.DispObj(xldLine, "blue");//丈量出来的直线
 	hWTool.DispObj(xldCont, "green");//丈量出来的点
 	//hWindowControl1为HWindowControl目标实例
 	//hWindowControl1.HalconWindow.SetColor("blue");
 	//hWindowControl1.HalconWindow.DispObj(xldLine);//丈量出来的直线
 	//hWindowControl1.HalconWindow.SetColor("red");
 	//hWindowControl1.HalconWindow.DispObj(contours);//丈量的直线规模
 	// hWindowControl1.HalconWindow.SetColor("green");
 	//hWindowControl1.HalconWindow.DispObj(xldCont);//丈量出来的点