Electronics Forum: 2002.12 camera (3)

Fiducial Shapes---

Electronics Forum | Fri Dec 13 09:06:30 EST 2002 | russ

One thing I have found when using square or diamond etc... Fiducials is, if it is a HASL finish board, the finish may be thick and the fid camera will see them having rounded edges different sizes etc.. and will cause quality failures. Russ (My sp

Fiducial Shapes---

Electronics Forum | Fri Dec 13 18:47:22 EST 2002 | stefwitt

In theory you are right, but the camera CCD chip has only small squares as pixels. The edges of the circle lit the pixels only by a certain percentage. In order to find the edges, you will have to use sub-pixels or greyscales. A circle is also prone

Express Newsletter: 2002.12 camera (167)

SMT Express, Volume 4, Issue No. 5 - from SMTnet.com

SMT Express, Volume 4, Issue No. 5 - from SMTnet.com Volume 4, Issue No. 5 Thursday, May 23, 2002 OnBoard Forum Who's OnBoard? Jim Zanolli Begins: Tuesday, May 28, 2002 12:00 PM ET Ends: Friday, May 31, 2002 5:00 PM ET Jim Zanolli


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