IMAQ ImageToArray returns NaN in LabVIEW 7.0

[Kian]

I wrote a VI to quantify an image using both LabVIEW 5.1 and IMAQ Vision 5.0. Recently I upgraded to LabVIEW 7.0. When I tried to run my VI, it worked well sometimes but very often, the data values were returned as NaN. Upon checking, I realized the problem lies with the IMAQ ImageToArray subVI. When I tried to convert an image to array, it sometimes return NaN. Can anyone help me with this problem? I am still using Vision 5.0.

Thanks in advance.

Kian

[DOC-doc]

Did you change the image format (there is a new image format in LV 7.0) ?

[ColinAE]

Did you change the image format (there is a new image format in LV 7.0)

I would expect broken wires if this was the problem, but it is certainly a possiblility. If there is an image data type problem, run the image datatype update utility, which should be installed in the National Instruments\Vision\Utility directory.

There is also a high probablity that Vision 5.0 and LabVIEW 7.0 will not behave that well together. If this problem only happens occasionally, try and see if there is a correlation between the images themselves and the NaN values.

Regards,
Colin C.
Applications Engineering

[Kian]

I don't seem to have the National Instruments\Vision\Utility directory. Do I need to install it?

Thanks.

Kian

[ColinAE]

That is a directory that may not be on your system due to the version of IMAQ Vision that you have.

I have attached the LLB to this post in case you cannot locate it.
Regards,
Colin C.
Applications Engineering