* 
* Image Processing with HALCON
* bga-simple.dev
* 
* bga-simple.dev - ball grid array inspection
* (threshold value predefined "by hand")
* 
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* switch off the automatic update of HDevelop (to get faster):
* 
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* read image, check its size and open appropriately sized window:
read_image (Image, 'bga.tif')
get_image_pointer1 (Image, _, Type, Width, Height)
dev_close_window ()
dev_open_window (0, 0, Width*0.5, Height*0.5, 'black', WindowHandle)
dev_set_part (0, 0, Height-1, Width-1)
dev_display (Image)
wait_seconds (1)
* 
dev_update_window ('off')
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* prepare visualization:
dev_set_draw ('margin')
dev_set_colored (12)
dev_set_line_width (1)
* 
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* detecting the balls with subpixel accuracy:
threshold (Image, Region, 100, 255)
connection (Region, ConnectedRegions)
select_shape (ConnectedRegions, SelectedRegions, ['area','circularity'], 'and', [100,0.8], [200,1.0])
boundary (SelectedRegions, RegionBorder, 'inner')
dilation_circle (RegionBorder, RegionDilation, 3.5)
union1 (RegionDilation, RegionUnion)
reduce_domain (Image, RegionUnion, ImageReduced)
edges_sub_pix (ImageReduced, Edges, 'lanser2', 0.5, 20, 40)
fit_ellipse_contour_xld (Edges, 'fitzgibbon', -1, 0, 0, 200, 3, 2, Row, Column, Phi, Radius1, Radius2, StartPhi, EndPhi, PointOrder)
gen_ellipse_contour_xld (ContEllipse, Row, Column, Phi, Radius1, Radius2, StartPhi, EndPhi, PointOrder, 1.5)
dev_set_part (701, 771, 723, 793)
crop_part (Image, ImagePart, 773-10, 781-10, 22, 22)
dev_display (Image)
dev_set_color ('red')
dev_display (Edges)
dev_set_color ('green')
dev_display (ContEllipse)