HALCON示例程序obj_diff.hdev算子obj_diff 的使用

示例程序源码（加注释）

• 关于显示类函数解释

  read_image (Image, ‘particle’)

• 二值化

  threshold (Image, Region, 57, 255)

• 分割连通域

  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)

• 使用区域列坐标

  select_shape (ConnectedRegions, LeftRegions, ‘column’, ‘and’, 0.0, 256.0)

• 求取两个对象不同

  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 ()

• 一个空区域与一个区域的不同

  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 ()

• 图片与图片不在同一对象下，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轮廓与图片一样

  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’)

处理思路

这个例子是主要讲解了obj_diff 算子的应用。

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。