Halcon表面划伤检测实例.docx

1、Halcon表面划伤检测实例Halcon表面划伤检测实例*关闭活动图形窗口dev_close_window ()* 在程序执行中指定输出行为为 off。dev_update_window (off)* * step: acquire image 步骤：获取图像* *读入文件名为 surface_scratch 的图像到Imageread_image (Image, surface_scratch)get_image_size (Image, Width, Height)*打开一个和Image宽高比一致的图像窗口dev_open_window_fit_image (Image, 0, 0, Wi

2、dth, Width, WindowID)*设置 窗口字体大小为 12，字体类型为Courier，粗体不倾斜字体。set_display_font (WindowID, 12, Courier, true, false)*设置填充模式为margindev_set_draw (margin)*定义输出轮廓线宽为4dev_set_line_width (4)*显示Image到窗口dev_display (Image)*WindowID窗口使用黑色字体在一个方框内显示按F5继续运行 字体，并注册F5消息处理disp_continue_message (WindowID, black, true)st

3、op ()* * step: segment image 步骤：图像分割* * - using a local threshold 使用局部阈值* 对Image进行7*7均值滤波mean_image (Image, ImageMean, 7, 7)*得到的图像为：*用均值滤波图像作为二值化阈值图像，返回小于灰度值小于该点阈值-5的图像。dyn_threshold (Image, ImageMean, DarkPixels, 5, dark)*得到的区域为：* - extract connected components 提取连通分量*由分割出来的DarkPixels获得连通区域到Connect

4、edRegions*得到的连通区域为：connection (DarkPixels, ConnectedRegions)*设置混合输出颜色为12种dev_set_colored (12)*显示当前图形窗口中的图像对象。dev_display (ConnectedRegions)*disp_continue_message (WindowID, black, true)stop ()* * step: process regions 处理区域* * - select large regions 选取大区域*从ConnectedRegions中得到面积大于10小于1000的区域到SelectedR

5、egionsselect_shape (ConnectedRegions, SelectedRegions, area, and, 10, 1000)*设置当期图像窗口的图像对象为Imagedev_display (Image)* 设置当期图像窗口的图像对象为SelectedRegionsdev_display (SelectedRegions)disp_continue_message (WindowID, black, true)stop ()* - visualize fractioned scratch 可视化划分划痕*打开窗口设置局部open_zoom_window (0, roun

6、d(Width/2), 2, 303, 137, 496, 3, WindowHandleZoom)*设置输出颜色为蓝色dev_set_color (blue)dev_display (Image)dev_display (SelectedRegions)disp_continue_message (WindowID, black, true)stop ()* - merge fractioned scratches via morphology 通过形态学合并划痕*合并SelectedRegions的并集到RegionUnionunion1 (SelectedRegions, RegionU

7、nion)*以3.5作为圆形区域扩张的半径，对RegionUnion扩张得到RegionDilationdilation_circle (RegionUnion, RegionDilation, 3.5)dev_display (Image)dev_display (RegionDilation)disp_continue_message (WindowID, black, true)stop ()*由RegionDilation获取骨架给Skeletonskeleton (RegionDilation, Skeleton)*通过8邻接或四邻接方法将骨架链接后传给Errorsconnectio

8、n (Skeleton, Errors)dev_set_colored (12)dev_display (Image)dev_display (Errors)disp_continue_message (WindowID, black, true)stop ()* - distinguish small and large scratches 区分大小划痕*关闭窗口close_zoom_window (WindowHandleZoom, Width, Height)*选择面积大于50小于1000的区域到Scratchesselect_shape (Errors, Scratches, area, and, 50, 10000)*选择面积大于1小于50的区域到Dotsselect_shape (Errors, Dots, area, and, 1, 50)dev_display (Image)dev_set_color (red)dev_display (Scratches)dev_set_color (blue)dev_display (Dots)