YSD_Users_E.pdf - 第253页
5-64 5 Creating the board data 4 Pr ess the [Mark A dj] button to open the Mark Adjust windo ws. Mark Adjust window 64538-N7-00 5 Set the board on the conv ey or and clamp it. 6 Mo ve the head so the pattern is displa ye…
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Creating the board data
6.6.1 Pattern registration
To utilize pattern matching, you must register the reference pattern in the template.
1
Decide on the pattern.
Decide which pattern you want to use for pattern matching. Select a pair of patterns
that meet the conditions explained previously.
2
Enter the pattern name in the mark information.
Open the Mark screen and, in the Mark Name column, enter the name that you can
easily identify as a pattern.
3
Set the parameters.
Set the parameters as follows.
1. Set “Mark Type” of the Basic parameters to “Fiducial”.
2. Set “Algorithm Type” of the Vision parameters to “PTRN Outline” or “PTRN GrayLev” or "PTRN Whole".
PTRN Outline:
In most cases, select this parameter for pattern matching. When the outline is definite, the pattern
can be recognized even if uneven brightness portions are present inside the pattern.
PTRN GrayLev :
Selecting this parameter is more effective in recognizing a pattern whose brightness is uniform inside
the pattern. This parameter setting requires a longer time to recognize a pattern than in the “PTRN
Outline” setting and also the data size will be larger.
PTRN Whole:
Selecting this parameter is effective in acquiring details of a pattern image. Since the entire pattern
is recognized and the image is less compressed, this parameter setting requires a longer time than in
the "PTRN GrayLev" setting and also the data size will be even more larger.
Set to "PTRN Outline" or "PTRN GrayLev" or "PTRN Whole".
Entering the pattern name
Enter the pattern name.
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Pattern recognition types
PTRN outline PTRN Graylev
Uneven brightness Uniform brightness
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Creating the board data
4
Press the [Mark Adj] button to open the Mark Adjust windows.
Mark Adjust window
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5
Set the board on the conveyor and clamp it.
6
Move the head so the pattern is displayed in the center of the vision monitor.
Use the Move Head button to move the head. When the head is positioned, press the [Close] button to
return to the Mark Adjust window.
7
Press the [Pattern] button.
The Pattern registration screen appears as shown below.
Pattern registration screen
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8
Decide on the pattern size.
By using the cursor selection buttons and arrow buttons, adjust the window size and position to enclose
the entire pattern. The function of each button is as follows.
[Start] button
The window can be enlarged or reduced with the arrow keys, using the lower right corner of the
window as a start point.
[End] button
The window can be enlarged or reduced with the arrow keys, using the upper left corner of the
window as a start point.
[Move] button
The entire window moves with the arrow keys.
[Center Offset] button
Press this button when you want to shift the reference position from the center of the window. (The
reference position is displayed as a pink cross cursor.)
[1 Pixel / 10 Pixel] buttons
Press these buttons to change the distance that the window moves each time you press an arrow
button.
Window movement and adjustment
[End] button[Start] button [Move] button
Stationary
point
Entire window moves.
Pattern
Enclose the pattern.
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Register the pattern.
Make sure that the pattern is centered in the window, and then press the [Save Pattern] button.
0
Check the pattern image.
Pressing the [Draw Pattern] button displays the pattern image that has been obtained, so check the
shape.
q
Return to the Mark Adjust window.
Press the [Close] button to return to the Mark Adjust window.