How do you count things into picture?

From a picture made with the smartphone, I would like to count the number of object is there.
which blocks or option can I use to do this ?
Thank you

That's not a native AI2 capability.

Search an extension collection for image analysis.

If you are making the picture with your app, count the objects as you add them ?

What is meant by objects? Show 1-2 (sample) pictures so we can get an idea.