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HALCON示例程序surface_scratch.hdev提取划痕

示例程序源码（加注释）

• 关于显示类函数解释

  dev_update_off ()

  dev_close_window ()

  read_image (Image, ‘surface_scratch’)

  get_image_size (Image, Width, Height)

  dev_open_window_fit_image (Image, 0, 0, Width, Width, WindowID)

  set_display_font (WindowID, 16, ‘mono’, ‘true’, ‘false’)

  dev_set_draw (‘margin’)

  dev_set_line_width (4)

  dev_display (Image)

  Message := ‘This program shows the extraction of’

  Message[1] := ‘surface scratches via local thresholding’

  Message[2] := ‘and morphological post-processing’

  disp_message (WindowID, Message, ‘window’, 12, 12, ‘black’, ‘true’)

  disp_continue_message (WindowID, ‘black’, ‘true’)

  stop ()

• 使用动态阈值进行分割

  mean_image (Image, ImageMean, 7, 7)

  dyn_threshold (Image, ImageMean, DarkPixels, 5, ‘dark’)

• 分割连通域

  connection (DarkPixels, ConnectedRegions)

  dev_set_colored (12)

  dev_display (Image)

  dev_display (ConnectedRegions)

  Message := ‘Connected components after image segmentation’

  Message[1] := ‘using a local threshold.’

  disp_message (WindowID, Message, ‘window’, 12, 12, ‘black’, ‘true’)

  disp_continue_message (WindowID, ‘black’, ‘true’)

  stop ()

• 面积筛选

  select_shape (ConnectedRegions, SelectedRegions, ‘area’, ‘and’, 10, 1000)

  dev_display (Image)

  dev_display (SelectedRegions)

  disp_message (WindowID, ‘Large Regions’, ‘window’, 12, 12, ‘black’, ‘true’)

  disp_continue_message (WindowID, ‘black’, ‘true’)

  stop ()

  open_zoom_window (0, round(Width / 2), 2, 303, 137, 496, 3, WindowHandleZoom)

  dev_set_color (‘blue’)

  dev_display (Image)

  dev_display (SelectedRegions)

  set_display_font (WindowHandleZoom, 16, ‘mono’, ‘true’, ‘false’)

  disp_message (WindowHandleZoom, ‘Fractioned scratches’, ‘window’, 12, 12, ‘black’, ‘true’)

  disp_continue_message (WindowHandleZoom, ‘black’, ‘true’)

  stop ()

• 合并区域

  union1 (SelectedRegions, RegionUnion)

• 膨胀区域

  dilation_circle (RegionUnion, RegionDilation, 3.5)

  dev_display (Image)

  dev_display (RegionDilation)

  Message := ‘Region of the scratches after dilation’

  disp_message (WindowHandleZoom, Message, ‘window’, 12, 12, ‘black’, ‘true’)

  disp_continue_message (WindowHandleZoom, ‘black’, ‘true’)

  stop ()

• 提取区域骨架

  skeleton (RegionDilation, Skeleton)

  connection (Skeleton, Errors)

  dev_set_colored (12)

  dev_display (Image)

  dev_display (Errors)

  Message := ‘Fractioned scratches merged via morphology’

  disp_message (WindowHandleZoom, Message, ‘window’, 12, 12, ‘black’, ‘true’)

  disp_continue_message (WindowHandleZoom, ‘black’, ‘true’)

  stop ()

  close_zoom_window (WindowHandleZoom, Width, Height)

  select_shape (Errors, Scratches, ‘area’, ‘and’, 50, 10000)

  select_shape (Errors, Dots, ‘area’, ‘and’, 1, 50)

  dev_display (Image)

  dev_set_color (‘red’)

  dev_display (Scratches)

  dev_set_color (‘blue’)

  dev_display (Dots)

  Message := ‘Extracted surface scratches’

  Message[1] := ‘Not categorized as scratches’

  disp_message (WindowID, Message, ‘window’, 440, 310, [‘red’,‘blue’], ‘true’)

处理思路

这个例子是主要讲解了金属划痕提取。

后记

大家有什么问题可以向我提问哈，我看到了第一时间回复，希望在学习的路上多多结交良师益友。