Issues with nested for loops - saving images from a camera

[CP Miika]

Hi all,

I've written a vi. to capture a specific number of images ('Image No') and save these images, outputted to a folder of my choice.  Each image is identified sequentially.  However, I wish to do a number of iterations ('Run') of this capture sequence, such that the filename of each image would be 'Filename (Run)_(Image No).png', e.g. run 5, image 10 would be 'Filename 5_10.png'.  I have tried a nested for loop for this but I receive an error 'Asynchronous I/O operation in progress' (I've attached a printscreen).

Can anyone assist me in solving this problem? I preiously posted this in machine Vision but got no response (http://forums.ni.com/t5/Machine-Vision/Capturing-image-sequences-issues-with-nested-for-loops/m-p/19...).  Please find attached my vi.

Kindest regards and thanks,

Miika

[CP Miika]

Hi all,

I've written a vi. to capture a specific number of images ('Image No') and save these images, outputted to a folder of my choice.  Each image is identified sequentially.  However, I wish to do a number of iterations ('Run') of this capture sequence, such that the filename of each image would be 'Filename (Run)_(Image No).png', e.g. run 5, image 10 would be 'Filename 5_10.png'.  I have tried a nested for loop for this but I receive an error 'Asynchronous I/O operation in progress' (I've attached a printscreen).

Can anyone assist me in solving this problem? I preiously posted this in machine Vision but got no response (http://forums.ni.com/t5/Machine-Vision/Capturing-image-sequences-issues-with-nested-for-loops/m-p/19...).  Please find attached my vi.

Kindest regards and thanks,

Miika

[Norbert_B]

Miika,

the problem is not the filenam, but the name of the folder (AHHHHH!). You try to create the same folder in the outer for loop over and over again.... (it is the error message above the '======', not below 🙂 )

Norbert

[CP Miika · Accepted solution]

Dear Norbert_B,

Thank you for your reply.  I solved the problem by using a flat sequence structure - folder in first frame and all subsequent processing in the second! Easy as pi!

Regards,

Miika