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September 1997

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Mon, 15 Sep 1997 13:45:23 -0700
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I am not a current subscriber to this list, so I would appreciate if any
replies can be also copied to my address: [log in to unmask] Thank
you.
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My question is in regard to any software/hardware which might be on the
market, capable of calculating the offsets, scaling, and rotation
factors for a panel, taking in consideration the data obtained from
x-raying individual coupons (set of holes on specific pad size) in each
corner of the panel. On some of the x-ray machines on the market, the
operator has to "appreciate" these shifts for each corner, and depending
on the these values, to "evaluate/calculate" the offsets, scale and
rotation factors. This operation is subjective, involves a lot of
experience, and is time consuming. Some other x-ray machines have the
capability of measuring the horizontal/vertical shifts for each hole,
but lack the calculation part for the entire panel.

It would be nice if after measuring the horizontal/vertical displacemnt
for each hole (each corner), the software will calculate the
corrections, scaling and rotations, without any further intervention
from operator.

It would also be very helpful if the software will recognize the hole
and pad, thus will provide the displacement values, so the operator will
not have to measure these features. In this case the operator will have
to take 4 images (quad view) of the corners of the panel, and the
application will do the rest.

If you know of such application I will appreciate any inputs.

Thank you very much.
Julian Mart

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