HALCON示例程序obj_diff.hdev算子obj_diff 的使用

示例程序源碼（加注釋）

• 關于顯示類函數解釋
  read_image (Image, ‘particle’)
• 二值化
  threshold (Image, Region, 57, 255)
• 分割連通域
  connection (Region, ConnectedRegions)
  dev_close_window ()
  get_image_size (Image, Width, Height)
  dev_open_window_fit_image (Image, 0, 0, Width, Height, WindowHandle)
  set_display_font (WindowHandle, 16, ‘mono’, ‘true’, ‘false’)
  dev_set_draw (‘fill’)
  dev_set_colored (6)
• 使用區域列坐標
  select_shape (ConnectedRegions, LeftRegions, ‘column’, ‘and’, 0.0, 256.0)
• 求取兩個對象不同
  obj_diff (ConnectedRegions, LeftRegions, RightRegions)
  dev_clear_window ()
  dev_display (RightRegions)
  disp_message (WindowHandle, ‘Difference of all regions and\nleft hand side regions:\nRight hand side regions’, ‘window’, 12, 12, ‘black’, ‘true’)
  disp_continue_message (WindowHandle, ‘black’, ‘true’)
  stop ()
• 一個空區域與一個區域的不同
  gen_empty_obj (EmptyObject)
  obj_diff (ConnectedRegions, EmptyObject, ObjectsDiff)
  dev_clear_window ()
  dev_display (ObjectsDiff)
  disp_message (WindowHandle, ‘Difference of all regions and\nan empty object:\nAll regions’, ‘window’, 12, 12, ‘black’, ‘true’)
  disp_continue_message (WindowHandle, ‘black’, ‘true’)
  stop ()
  obj_diff (EmptyObject, LeftRegions, ObjectsDiff)
  dev_clear_window ()
  dev_display (ObjectsDiff)
  disp_message (WindowHandle, ‘Difference of an empty object\nand any other object:\nAn empty object’, ‘window’, 12, 12, ‘black’, ‘true’)
  disp_continue_message (WindowHandle, ‘black’, ‘true’)
  stop ()
• 圖片與圖片不在同一對象下，所以完全不同
  read_image (SameImage, ‘particle’)
  obj_diff (Image, SameImage, ObjectsDiff)
  dev_clear_window ()
  dev_display (ObjectsDiff)
  disp_message (WindowHandle, ‘Difference of an image and\nthe same image reloaded:\nThe original image’, ‘window’, 12, 12, ‘black’, ‘true’)
  disp_continue_message (WindowHandle, ‘black’, ‘true’)
  stop ()
• xld輪廓與圖片一樣
  gen_contour_polygon_xld (Contour, [50,150,250,250,250], [50,50,50,150,250])
  concat_obj (Region, Contour, RegionAndXLD)
  concat_obj (Region, Image, ImageAndRegion)
  obj_diff (RegionAndXLD, ImageAndRegion, ObjectsDiff)
  dev_clear_window ()
  dev_display (ObjectsDiff)
  disp_message (WindowHandle, ‘Difference of mixed type objects’, ‘window’, 12, 12, ‘black’, ‘true’)

處理思路

這個例子是主要講解了obj_diff 算子的應用。

后記

大家有什么問題可以向我提問哈，我看到了第一時間回復，希望在學習的路上多多結交良師益友。

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