Hi everyone.I am trying to do the "Hello World" project.I placed my printout on a PCB.Machine successfully done "optical homing" and "needle calibration",but during the process PCB measurement,machine shows "Optical positioning:can't find circle".(image1,2,3)
- Can't find circle fid4
- 1.jpg (390.89 KiB) Viewed 2888 times
- Can't find circle fid4
- 2.jpg (365.33 KiB) Viewed 2888 times
- Can't find circle fid4
- 3.jpg (364.31 KiB) Viewed 2888 times
I also have a doubt about camera processing.
http://www.liteplacer.com/camera-setup/ In "Down looking camera setup" page,it has been said that circle finding algorithm looks for a white circle on a dark background( i.e.,black homing mark) and it uses this technique to locate homing mark, right? you can see my settings for recognizing homing mark in the photos that I've uploaded(image 4 )
- Optical homing:homing mark
- 4.jpg (270.8 KiB) Viewed 2888 times
and I think it uses same technique to locate fiducials. But in "hello world" , the fiducial are white circles not dark. SO how can it locate the fiducials with the same settings for recognizing homing mark.Image 5
- fid4:image processing
- 5.jpg (293.1 KiB) Viewed 2888 times
shows the camera processing of fid4.As you can see it is not showing any circles.
I turned off the "invert" to locate the white circle of fiducials in "hello world"(image 4) but when I did that machine couldn't find "Homing mark"( image 6 and 7)
- fid4 without invert
- 6.jpg (289.35 KiB) Viewed 2888 times
- Optical homing:homing mark without invert
- 7.jpg (284 KiB) Viewed 2888 times
Thanks
