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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。