电子元件插针引脚测量实验.doc

电子元件插针引脚测量实验 【实验目的】 掌握如何建立被测量工件对象的基本检测步骤，包括工件定位、光源调整、焦距调节等图象测量，进而掌握工件尺寸测量可视化组态编程方法和技术，掌握如何对多插针相关尺寸参数同时测量的新方法，建立被测量插针的基本检测框架，进而扎实掌握插件多针尺寸、针间距及针宽度测量新技术，具备解决实际复杂插件多针参数视觉测量的技术难题。 【实验内容】 测量如图1-1 所示电子插件插针参数尺寸 (a) (b) 图1-1 ：开关 需要测量开关引脚的宽度及相互之间的距离。（b）确定检测边缘的矩形感兴趣区。 【实验步骤】 1、工件定位：将工件放置到平台转盘上相应位置，确保动态图象采集根据被测对象求。 2、光源调整：选择前光源或背光源确保图象不受自然光源影响。 3、焦距调节：根据被测对象大小和厚度，调节支架横枞位置和相机焦距。 4、打开图像处理软件，通过变量输入窗口、源程序窗口、菜单栏算子三种方式添加算子，编写工件尺寸的测量与标定程序。 * This example program demonstrates the basic usage of a measure object. * Here, the task is to determine the width of and the distance between the * pins of a switch. * * First, read in the image and initialize the program. read_image (Image, C:/Users/lipengfei/Pictures/图片库/1、插针引脚/bin_switch_7.png) get_image_pointer1 (Image, _, _, Width, Height) dev_open_window (0, 0, Width, Height, black, WindowHandle) dev_display (Image) * * Define the rectangular ROI within which the edges will be detected * and create the measure. Row := 390 Column := 380 Phi := rad(-60) Length1 := 60 Length2 := 10 Interpolation := nearest_neighbor gen_measure_rectangle2 (Row, Column, Phi, Length1, Length2, Width, Height, Interpolation, MeasureHandle) * * Determine all edge pairs that have a negative transition, i.e., edge pairs * that enclose dark regions. Sigma := 0.9 Threshold := 12 Transition := negative Select := all measure_pairs (Image, MeasureHandle, Sigma, Threshold, Transition, Select, RowEdgeFirst, ColumnEdgeFirst, AmplitudeFirst, RowEdgeSecond, ColumnEdgeSecond, AmplitudeSecond, IntraDistance, InterDistance) * * Visualize the results dev_display (Image) dev_set_draw (margin) dev_set_color (black) gen_rectangle2 (Rectangle, Row, Column, Phi, Length1, Length2) p_disp_dimensions (RowEdgeFirst, ColumnEdgeFirst, RowEdgeSecond, ColumnEdgeSecond, IntraDistance, InterDistance, Phi, Length2, WindowHandle) * * Free the memory that has been allocated for the measure. close_measure (MeasureHandle) 算法 主要算法步骤： 1)通过包含如图1-1(b)描述引脚的ROI矩形创建测量