HALCON示例程序measure_pump.hdev螺紋孔位置與尺寸測量

示例程序源碼（加注釋）

• 關于顯示類函數解釋
  dev_update_var (‘off’)
  dev_update_off ()
  read_image (Image, ‘pumpe’)
  get_image_size (Image, Width, Height)
  dev_close_window ()
  dev_open_window (0, 0, Width, Height, ‘light gray’, WindowID)
  dev_set_part (0, 0, Height - 1, Width - 1)
  dev_set_line_width (1)
  dev_set_color (‘red’)
  dev_set_draw (‘margin’)
  dev_display (Image)
  set_display_font (WindowID, 16, ‘mono’, ‘true’, ‘false’)
  disp_continue_message (WindowID, ‘black’, ‘true’)
  stop ()
• 快速二值化、篩選區域、輪廓變換、膨脹、縮小定義域、求邊界
  fast_threshold (Image, Region, 0, 70, 150)
  dev_set_colored (3)
  connection (Region, ConnectedRegions)
  select_shape (ConnectedRegions, SelectedRegions, [‘outer_radius’,‘anisometry’,‘area’], ‘and’, [5,1,100], [50,1.8,99999])
  shape_trans (SelectedRegions, RegionTrans, ‘outer_circle’)
  dilation_circle (RegionTrans, RegionDilation, 5.5)
  union1 (RegionDilation, RegionUnion)
  reduce_domain (Image, RegionUnion, ImageReduced)
  dev_clear_window ()
  dev_display (ImageReduced)
  disp_continue_message (WindowID, ‘black’, ‘true’)
  stop ()
  threshold_sub_pix (ImageReduced, Border, 80)
• 邊界篩選
  select_shape_xld (Border, SelectedXLD, [‘contlength’,‘outer_radius’], ‘and’, [70,15], [99999,99999])
• 分割
  segment_contours_xld (SelectedXLD, ContoursSplit, ‘lines_circles’, 4, 2, 2)
• 在進行篩選
  select_shape_xld (ContoursSplit, SelectedXLD3, [‘outer_radius’,‘contlength’], ‘and’, [15,30], [45,99999])
• 合并處于同一圓的xld輪廓
  union_cocircular_contours_xld (SelectedXLD3, UnionContours2, 0.5, 0.1, 0.2, 2, 10, 10, ‘true’, 1)
• 對xld輪廓進行排序
  sort_contours_xld (UnionContours2, SortedContours, ‘upper_left’, ‘true’, ‘column’)
  dev_clear_window ()
  dev_set_color (‘white’)
  dev_display (ImageReduced)
  dev_display (SortedContours)
  disp_continue_message (WindowID, ‘black’, ‘true’)
  stop ()
  count_obj (SortedContours, NumSegments)
  dev_display (Image)
  dev_display (SortedContours)
  NumCircles := 0
  disp_message (WindowID, ‘Circle radius and average distance’, ‘window’, 10, 10, ‘white’, ‘false’)
  disp_message (WindowID, ‘between circle and contour:’, ‘window’, 30, 10, ‘white’, ‘false’)

for i := 1 to NumSegments by 1select_obj (SortedContours, SingleSegment, i)NumCircles := NumCircles + 1* 擬合圓形fit_circle_contour_xld (SingleSegment, 'atukey', -1, 2, 0, 5, 2, Row, Column, Radius, StartPhi, EndPhi, PointOrder)* 繪制圓形輪廓gen_circle_contour_xld (ContCircle, Row, Column, Radius, 0, rad(360), 'positive', 1)dev_display (ContCircle)* 計算輪廓到橢圓距離dist_ellipse_contour_xld (SingleSegment, 'algebraic', -1, 0, Row, Column, 0, Radius, Radius, MinDist, MaxDist, AvgDist, SigmaDist)disp_message (WindowID, NumCircles, 'window', Row - 10, Column - 5, 'white', 'false')disp_message (WindowID, 'R' + NumCircles + ': ' + Radius$'.3', 'window', (i - 1) * 50 + 30, 450, 'white', 'false')disp_message (WindowID, 'D_avg: ' + AvgDist$'.3', 'window', ((i - 1) * 50) + 50, 450, 'white', 'false') endfor

dev_update_window (‘on’)

處理思路

這個例子是主要講解了邊緣提取，計算尺寸與位置。

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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