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’)