Cannot Open u16 RAW (binary) Image in Vision

[DonRoth]

Have another U16 Image question.  Trying to open a U16 raw image.  Opens fine in ImageJ with the following options:

I duplicated these settings using this simple code

But I get the error: "Error -1074396074 occurred at IMAQ ReadFile

Possible reason(s):

IMAQ Vision:  Incompatible image size."

Image should look like:

I am posting the file "Martha 1849-02-001-6-view0000_raw_grey_32bit.raw" at ftp://ftp.ni.com/incoming if you would like to try.

Thanks,

Don

[ChristopheC · Accepted solution]

The help says "If you are reading a nonstandard file format, you must set the size of Image to match the contents of the file before using IMAQ ReadFile".

Use IMAQ SetImageSize to set the size to 3888 x 3072 and it works.

-Christophe

[DonRoth]

Thanks.  This makes perfect sense. I missed this when reading the help on the function.  And it works.

What I would suggest to the NI Vision team is that they add X and Y size (resolution) parameters to the 'File Options' cluster IMAQ ReadFile VI.  Then a complete specification would be available in just this one function.

Thanks again.

Sincerely,

Don

[DonRoth]

One question  related to this - anyway to open raw binary file in Vision Assistant?  Doesn't seem to be.  This should certainly be added as an option and have a dialog spawned with File Options control.

Don

[ChristopheC]

Unfortunately, there is no way currently to open a RAW file in Vision Assistant. I filed feature CAR 326887 to address it in a future version.

I can't give you a timeline, as features are prioritized for each version, but we have a trace of that request now.

Thanks,

-Christophe

[DonRoth]

Thanks. This one should be simple to implement for a future version since you already have the underlying code to do it in Vision.  I would think a lot of folks would be interested in this.

Don