"An insufficient number of calibration points function" in the calibration to learn?

I suspect that IMAQ learning model calibration VI can be tapped, like I can't make it work for the few reference points.

I get error-1074396116, even when I'm passing over 4 points of reference, as specified using.

I noticed these posts, the http://forums.ni.com/ni/board/message?board.id=200&requireLogin=False&thread.id=10257, the http://forums.ni.com/ni/board/message?board.id=200&message.id=17400&requireLogin=False, where the problem seems solved. The VI of the sample provided by the first poster, http://forums.ni.com/ni/attachments/ni/200/10279/1/Reference_Points1.vi, does not work for me either.

My setup is LV9 on winXp32, image of 640 x 480 8-bit grayscale. What I try to do is not the subject of the post, the potential bug is.

Can anyone provide a working example? Calibration samples included in the finder of the example use calibration grids, not of few reference points AFAIU.

Thanks in advance, Enrico

After a little experimentation with the VI provided by the first poster (attached my small change), I realize account of the calibration point of view seem to need a minimum of 5 points, while non-linear required a minimum of 9. So, there is a bug in the documentation. This can be confirmed?

Thank you, Enrico

Tags: NI Hardware

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