Image acquisition using DAQmx

[c lees]

I am currently using the DAQmx with IMAQ, to read in a voltage from a sensor which scans an image and saves the data in an array, an then use IMAQ to display the image, although all i get is a black image at all times, even though the data is being read in.

[AdamB]

Hi c lees,

What are the values you get back from your DAQmx task? (the range)

You'll find that the image probably isn't actually actually completely black.  But the image (when set at 8 bits) has 255 levels. (255 is bright white) so if your values are between 0 and 10V then the image will appear very dark.

Maybe try adding a multiplication factor to the data array before you convert to image?  (say.. 25.5? for a 0-10V image)

If the range is between -10 and +10, you will need to offset by 10V and then multiply by 12.25.

Does that help at all?

Thanx

AdamB

[AdamB]

Hi c lees,

Did you manage to solve your problem in the end?

Hopefully you did, but if not I'd be happt to help further if you post back again.

Thanx

AdamB

[c lees]

Hi,

Thanks for your help.  I added in a mutliplier and there is some sort of an image coming through now, i also did not have any timing for taking in the samples and i think thats what was causing  the problem as well.

Thanks

C Lees