HALCON示例程序count_pellets.hdev分割豆子，基本形态学的使用

示例程序源码（加注释）

• 关于显示类函数解释
  dev_update_off ()
  read_image (Image, ‘pellets’)
  dev_close_window ()
  get_image_size (Image, Width, Height)
  dev_open_window (0, 0, Width, Height, ‘black’, WindowID)
  dev_set_part (0, 0, Height - 1, Width - 1)
  set_display_font (WindowID, 16, ‘mono’, ‘true’, ‘false’)
  dev_set_colored (6)
  dev_set_draw (‘margin’)
  dev_set_line_width (3)
  dev_display (Image)
  disp_message (WindowID, ‘Detect each single pellet’, ‘window’, 12, 12, ‘black’, ‘true’)
  disp_continue_message (WindowID, ‘black’, ‘true’)
  stop ()
• 之前介绍binary_threshold 算子的文章
  binary_threshold (Image, LightRegion, ‘max_separability’, ‘light’, UsedThreshold)
• 使用圆形元素进行开运算
  opening_circle (LightRegion, Region, 3.5)
  dev_display (Region)
  disp_message (WindowID, ‘First, segment the pellets’, ‘window’, 12, 12, ‘black’, ‘true’)
  disp_continue_message (WindowID, ‘black’, ‘true’)
  stop ()
• 筛选出直接分割连通域的错误演示，因为这个时候还有豆子黏连在一起。
  connection (Region, ConnectedRegionsWrong)
  dev_display (Image)
  dev_display (ConnectedRegionsWrong)
  disp_message (WindowID, ‘Simple connection fails’, ‘window’, 12, 12, ‘black’, ‘true’)
  disp_continue_message (WindowID, ‘black’, ‘true’)
  stop ()
• 使用圆形元素进行腐蚀运算
  erosion_circle (Region, RegionErosion, 7.5)
  dev_display (Image)
  dev_display (RegionErosion)
  disp_message (WindowID, ‘Erosion of the pellet regions’, ‘window’, 12, 12, ‘black’, ‘true’)
  disp_continue_message (WindowID, ‘black’, ‘true’)
  stop ()
• 现在进行连通域分割
  connection (RegionErosion, ConnectedRegions)
  dev_display (Image)
  dev_display (ConnectedRegions)
  disp_message (WindowID, ‘Perform connection now’, ‘window’, 12, 12, ‘black’, ‘true’)
  disp_continue_message (WindowID, ‘black’, ‘true’)
  stop ()
• 恢复豆子原本区域，使用圆形元素进行膨胀。
  dilation_circle (ConnectedRegions, RegionDilation, 7.5)
• 对区域进行计数
  count_obj (RegionDilation, Number)
  dev_display (Image)
  dev_display (RegionDilation)
  disp_message (WindowID, Number + ’ pellets detected’, ‘window’, 12, 12, ‘black’, ‘true’)

处理思路

这个例子是主要讲解了形态学在分割连通域当中的应用。dilation_circle 、erosion_circle 、opening_circle 。

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。