Write mulitple .png images

[jmeyer33]

Is is possible to write multiple .png images to a folder designated by a path?

I'm surprised I really haven't found any documentation about this.

What I am able to do is:

-capture a single .png image from a camera and save it to a folder

-run the camera in a video mode and view the video through a VI

I would basically like to run it in a video mode and capture each frame and save it as a .png file.

I'm not too familiar with LabVIEW, so please forgive my ignorance.

[Stephen_S. · Accepted solution]

Hi jmeyer33,

You can designate a base path for your folder and then give each file a different relative path by using the Build Path VI. You can concatenate the filename and the Loop Iteration value from the while loop (converted to a string with Number to Decimal String) if you want each name to be the same except for a counter at the end (picture0.png, picture1.png, picture2.png, etc.).

Regards,

Stephen S.

[jmeyer33]

Stephen (or others),

I am using the Build Path VI and the Number to Decimal String.  However, the iteration is added to the very end of the base path.  For example, "C:\Program Files\png_.png" becomes "C:\Program Files\png_.png\1" in the iteration.  Is there a way to add  the iteration in the middle of the path, such as "...\png_1.png", "...\png_2.png"?

Also, I have the appended path as input into an IMAQ Write File 2 VI.  It doesn't seem to be writing the iterations though, perhaps because they have no extension (because they are ending up looking like "...\png_.png\1", "...\png_.png\2", and so on)?  I don't know.  Any suggestions would be greatly appreciated.

[waldemar.hersacher]

User "Format into String" and png_%d.png as format string. Use the output string as input to the Build Path function.