Halcon combined with C ＃ to detect surface defects -- Halcon routine autobahn

  In the previous article, we discussed the most basic framework principles , If you want to see what knowledge you can leave a message , Let me talk about it in the column .

During this period of time, I plan to share HALCO A series of routines . We can't start many times in the test , The reason is very simple. We accumulate too few operators .HALCON There are many operators , We need to accumulate slowly and then learn and use flexibly , Use different combinations to solve practical problems .

You can open the routine autobahn

The method used in this routine is blob Analysis method , The key operators here are as follows

Generate a grid area ,

gen_grid_region (Grid, MinSize, MinSize, 'lines', 512, 512)

Generate a grid area ,

 sobel_amp (Mask, Gradient, 'sum_abs', 3)

Edge extraction , We know that there must be light and dark changes on the edge , Will form . So we can easily extract where the lane lines and grids converge .

utilize blob Extract the lane line

 threshold (Gradient, Points, 20, 255)

The above lines of code are the key to this routine . Let's look at it line by line

1. Open a new window

dev_update_window ('off')
dev_close_window ()
dev_open_window (0, 0, 768, 575, 'black', WindowID)

2. Set parameters