算法大致思路如下：
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，如矩形，圆，并将其加入到创建的模板中
3.设置模板的相关参数，包括图像大小，容忍度等
4.读入图像，并执行计量模型，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，测量的轮廓，定位区域，后补区域
dev_update_off ()read_image (Image, 'pads')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, 'mono', 'true', 'false')//定义圆的近似位置和测量公差RowCircle := [52:89:500]CircleInitRow := [RowCircle,RowCircle]CircleInitColumn := [gen_tuple_const(6,348),gen_tuple_const(6,438)]gen_cross_contour_xld (Cross1, CircleInitRow, CircleInitColumn, 6, 0.785398)CircleInitRadius := [gen_tuple_const(6,23),gen_tuple_const(6,23)]CircleRadiusTolerance := 12//定义矩形的近似位置和测量公差RectangleInitRow := [410,410]RectangleInitColumn := [215,562]RectangleInitPhi := [0,0]RectangleInitLength1 := [85,85]RectangleInitLength2 := [88,88]RectangleTolerance := 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2set_metrology_object_param (MetrologyHandle, MetrologyCircleIndices, 'num_instances', 2)//将“measure_transition”（测量转换）设置为“uniform”（统一）确保只返回一致的圆，要么只是从/亮到暗的边缘，要么相反。因为一致性检查增加了运行时，所以默认情况下已切换。但在本例中可设置使用，因为负边和正边都存在set_metrology_object_param (MetrologyHandle, MetrologyCircleIndices, 'measure_transition', 'uniform')//设置最小分数，增加结果的鲁棒性set_metrology_object_param (MetrologyHandle, MetrologyCircleIndices, 'min_score', .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, 'all', 'result_type', 'all_param', RectangleParameter)//获取参数Sequence := [0:5:|RectangleParameter| - 1]RectangleRow := RectangleParameter[Sequence]RectangleColumn := RectangleParameter[Sequence + 1]RectanglePhi := RectangleParameter[Sequence + 2]RectangleLength1 := RectangleParameter[Sequence + 3]RectangleLength2 := RectangleParameter[Sequence + 4]//获取计量模型的测量结果 get_metrology_object_result (MetrologyHandle, MetrologyCircleIndices, 'all', 'result_type', 'all_param', CircleParameter)//取参数Sequence := [0:3:|CircleParameter| - 1]CircleRow := CircleParameter[Sequence]CircleColumn := CircleParameter[Sequence + 1]CircleRadius := CircleParameter[Sequence + 2]//显示结果，查询计量对象的结果轮廓。get_metrology_object_result_contour (Contours, MetrologyHandle, 'all', 'all', 1.5)//获取测量区域的轮廓以及边缘点的坐标，拟合圆和矩形的必要条件get_metrology_object_measures (Contour, MetrologyHandle, 'all', 'all', 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 := ['gray','cyan','green']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 := Color[2] + ': Measurement result'Message[1] := Color[1] + ': Edge candidate points'Message[2] := Color[0] + ': Measure regions'disp_message (WindowHandle, Message, 'window', 12, 12, 'black', 'true')stop ()//清理内存clear_metrology_model (MetrologyHandle) //释放句柄
用到的几个算子：
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
