【Halcon二维测量】——使用计量模型以亚像素精度测量圆和矩形

算法大致思路如下&＃xff1a;
      1.创建计量模型模板并设置计量对象图像大小
      2.根据先验知识生成相关图形形状&＃xff0c;如矩形&＃xff0c;圆&＃xff0c;并将其加入到创建的模板中
      3.设置模板的相关参数&＃xff0c;包括图像大小&＃xff0c;容忍度等
      4.读入图像&＃xff0c;并执行计量模型&＃xff0c;测量并拟合计量模型中所有计量对象的几何形状
      5.提取测量结果&＃xff0c;测量的轮廓&＃xff0c;定位区域&＃xff0c;后补区域
 

dev_update_off ()
read_image (Image, &＃39;pads&＃39;)
get_image_size (Image, Width, Height)
dev_close_window ()
dev_open_window_fit_image (Image, 0, 0, -1, -1, WindowHandle)
set_display_font (WindowHandle, 14, &＃39;mono&＃39;, &＃39;true&＃39;, &＃39;false&＃39;)//定义圆的近似位置和测量公差RowCircle :&＃61; [52:89:500]
CircleInitRow :&＃61; [RowCircle,RowCircle]
CircleInitColumn :&＃61; [gen_tuple_const(6,348),gen_tuple_const(6,438)]
gen_cross_contour_xld (Cross1, CircleInitRow, CircleInitColumn, 6, 0.785398)
CircleInitRadius :&＃61; [gen_tuple_const(6,23),gen_tuple_const(6,23)]
CircleRadiusTolerance :&＃61; 12//定义矩形的近似位置和测量公差RectangleInitRow :&＃61; [410,410]
RectangleInitColumn :&＃61; [215,562]
RectangleInitPhi :&＃61; [0,0]
RectangleInitLength1 :&＃61; [85,85]
RectangleInitLength2 :&＃61; [88,88]
RectangleTolerance :&＃61; 10// 准备计量模型数据结构
create_metrology_model (MetrologyHandle)
set_metrology_model_image_size (MetrologyHandle, Width, Height) //设置计量对象图像的大小。//将定义的矩形加入到计量模型中
add_metrology_object_rectangle2_measure (MetrologyHandle, RectangleInitRow, RectangleInitColumn, RectangleInitPhi, RectangleInitLength1, RectangleInitLength2, RectangleTolerance, 5, .5, 1, [], [], MetrologyRectangleIndices)//将定义的圆加入到计量模型中
add_metrology_object_circle_measure (MetrologyHandle, CircleInitRow, CircleInitColumn, CircleInitRadius, CircleRadiusTolerance, 5, 1.5, 2, [], [], MetrologyCircleIndices)//在一次调用中可每个计量对象可以测量多个圆/矩形/直线/椭圆,此处设置圆的数目为2
set_metrology_object_param (MetrologyHandle, MetrologyCircleIndices, &＃39;num_instances&＃39;, 2)//将“measure_transition”&＃xff08;测量转换&＃xff09;设置为“uniform”&＃xff08;统一&＃xff09;确保只返回一致的圆&＃xff0c;要么只是从/亮到暗的边缘&＃xff0c;要么相反。因为一致性检查增加了运行时&＃xff0c;所以默认情况下已切换。但在本例中可设置使用&＃xff0c;因为负边和正边都存在
set_metrology_object_param (MetrologyHandle, MetrologyCircleIndices, &＃39;measure_transition&＃39;, &＃39;uniform&＃39;)//设置最小分数&＃xff0c;增加结果的鲁棒性
set_metrology_object_param (MetrologyHandle, MetrologyCircleIndices, &＃39;min_score&＃39;, .9)// 开始执行测量
apply_metrology_model (Image, MetrologyHandle) //测量并拟合计量模型中所有计量对象的几何形状。// 获取计量模型的测量结果,矩形
get_metrology_object_result (MetrologyHandle, MetrologyRectangleIndices, &＃39;all&＃39;, &＃39;result_type&＃39;, &＃39;all_param&＃39;, RectangleParameter)//获取参数
Sequence :&＃61; [0:5:|RectangleParameter| - 1]
RectangleRow :&＃61; RectangleParameter[Sequence]
RectangleColumn :&＃61; RectangleParameter[Sequence &＃43; 1]
RectanglePhi :&＃61; RectangleParameter[Sequence &＃43; 2]
RectangleLength1 :&＃61; RectangleParameter[Sequence &＃43; 3]
RectangleLength2 :&＃61; RectangleParameter[Sequence &＃43; 4]//获取计量模型的测量结果 get_metrology_object_result (MetrologyHandle, MetrologyCircleIndices, &＃39;all&＃39;, &＃39;result_type&＃39;, &＃39;all_param&＃39;, CircleParameter)//取参数
Sequence :&＃61; [0:3:|CircleParameter| - 1]
CircleRow :&＃61; CircleParameter[Sequence]
CircleColumn :&＃61; CircleParameter[Sequence &＃43; 1]
CircleRadius :&＃61; CircleParameter[Sequence &＃43; 2]//显示结果&＃xff0c;查询计量对象的结果轮廓。
get_metrology_object_result_contour (Contours, MetrologyHandle, &＃39;all&＃39;, &＃39;all&＃39;, 1.5)//获取测量区域的轮廓以及边缘点的坐标&＃xff0c;拟合圆和矩形的必要条件
get_metrology_object_measures (Contour, MetrologyHandle, &＃39;all&＃39;, &＃39;all&＃39;, Row1, Column1) //得到计量模型的测量区域和边缘定位结果
gen_cross_contour_xld (Cross, Row1, Column1, 6, 0.785398)//显示结果
Color :&＃61; [&＃39;gray&＃39;,&＃39;cyan&＃39;,&＃39;green&＃39;]
dev_display (Image)
dev_set_line_width (1)
dev_set_color (Color[0])
dev_display (Contour)
dev_set_color (Color[1])
dev_display (Cross)
dev_set_line_width (2)
dev_set_color (Color[2])
dev_display (Contours)
Message :&＃61; Color[2] &＃43; &＃39;: Measurement result&＃39;
Message[1] :&＃61; Color[1] &＃43; &＃39;: Edge candidate points&＃39;
Message[2] :&＃61; Color[0] &＃43; &＃39;: Measure regions&＃39;
disp_message (WindowHandle, Message, &＃39;window&＃39;, 12, 12, &＃39;black&＃39;, &＃39;true&＃39;)
stop ()//清理内存
clear_metrology_model (MetrologyHandle) //释放句柄

用到的几个算子&＃xff1a;
      create_metrology_model (MetrologyHandle)–创建计量模型句柄
      set_metrology_model_image_size --设置计量对象图像的大小。
      add_metrology_object_rectangle2_measure–将定义的矩形加入到计量模型中
      add_metrology_object_circle_measure–将定义的圆加入到计量模型中
      set_metrology_object_param–设置计量模型的相关参数
      apply_metrology_model—测量并拟合计量模型中所有计量对象的几何形状
      get_metrology_object_result–获取计量模型的测量结果
      get_metrology_object_result_contour --查询计量对象的结果轮廓
      get_metrology_object_measures --得到计量模型的测量区域和边缘定位结果。
      clear_metrology_model --释放计量模型的句柄