Hello,
does anyone have experience counting toy cars with an S2 sensor? For events in Berlin, we want to use an S2 counter to count different types of toy cars in order to get children and young people excited about the topic of collecting mobility data using inexpensive counting devices. Telraam has already implemented something like this for its own trade fair stand demo.
What proportions are best suited for this? We are currently trying it out with a Lego Mindstorm model with an attached silhouette at a scale of 1:20; other scales of 1:18, 1:24, 1:43, 1:12, 1:32 and 1:64 might also be useful. We want to place the S2 counter in a house window of a Lego city (street). Counting Carrera cars would also be great.
Sorry for not getting back to you on this. How has the project gone?
Indeed, we have developed what we call the ‘diorama’ that we use on our stands when presenting how the device works. We use toy cars, bikes and other vehicles to show how the device counts them.
It should work, in principle, with most cars that are based on actual models and therefore have the right proportions to be identified as a ‘car’ (or other vehicle). It can be sensitive to having many different scales (e.g. toy buses that are the same length as toy cars and therefore scaled differently) so you may need to test it.
Once in place, you may need to reset the ROI to an appropriate (wide) view to make sure it captures the full object, depending on how close it is.
Have you had a chance to test it?
Hi Rob,
I made a first test with a toy bus (scale 1:48). Out of 10 attempts, 8 to 9 were usually counted successfully, but not as a bus but as a car. You can watch the test here. I set the ROI to 11.
Can you tell me, which toy models you have used?
I’m going on a long bike tour starting tomorrow and therefore won’t be able to continue the tests myself until May.
