IMAQ SSIM Doesn't Work for RGB (U32) Images

[Simon-P]

Greetings, Daniel;

No problem, it was my pleasure. Let me know if you do have any questions about the plane extraction idea.

Have a great day!

Cordially;

Simon P.

[DanielID]

So I went ahead and tried IMAQ ExtractColorPlanes.vi for my SSIM measurement.  This time I had no image type errors although it failed to detect the difference between 2 images that are different. I have posted the VI along with the front panel screenshots.  You will notice that the test image has a red square on one of the actor's face, I did this in microsoft paint.

 

[DanielID]

I also tried an even worse test image and I still get perfect scores...

The picture seen below is what was used as the test image. 

[Simon-P]

Greetings, Daniel;

I believe that the reason that the code is not able to find out the difference is that the IMAQ Create VIs repeat names. Since the images are effectively pointers, giving them the same name often leads to trouble. I modified the names for the IMAQ Create input strings and got the following result:

The change was the following: 

If you are curious about the requirements for the IMAQ Create, more information may be found here:

http://zone.ni.com/reference/en-XX/help/370281P-01/imaqvision/imaq_create/

Let me know if that helps.

[DanielID]

YES YOU ARE CORRECT! Thanks!!

[Simon-P]

Greetings, Daniel;

No problem, it was my pleasure.

Cordially;

Simon P.