Faster position recognition

[Sigmund]

I need a fast (<100 msec) position recognition of a chip, which image is acquired by a PCI1407 card. If I do it simply with the "pattern matching" tool of a particular zone of the chip, it takes more than 600 ms and this is even longer than the processing time for the entire measurement of this chip.
My only need is a strategy to be able to say where is this chip in the image field.

[BruceAmmons]

To locate the chip faster, you will need to use a different strategy than pattern matching. It will probably depend a lot on the specific details of the chip and the its surroundings. You may be able to do a line profile across the center of the chip and locate the edges. Two horizontal lines and a vertical line would give you the exact location of the chip if they were accurate.

Bruce

[Lonn]

I had a similar problem. I tried to downsample (4 times smaller for example)
both the pattern and the ROI and worked much faster.


"Sigmund" escribió en el mensaje
news:506500000008000000B2910000-1042324653000@exchange.ni.com...
> I need a fast (<100 msec) position recognition of a chip, which image
> is acquired by a PCI1407 card. If I do it simply with the "pattern
> matching" tool of a particular zone of the chip, it takes more than
> 600 ms and this is even longer than the processing time for the entire
> measurement of this chip.
> My only need is a strategy to be able to say where is this chip in the
> image field.