Pepper: Getting the distance to a Land Mark

Question

I am researching the ALLandMark module. How can I get the distance to detected Land Mark or the position of it?

I have tried to register Land Mark with ALTrackerProxy::registerTarget and then get the position or the coordinates of the target with:

• ALTrackerProxy::getTargetCoordinates - returns empty list []
• ALTrackerProxy::getTargetPosition - returns None

My idea is when Pepper detects Land Mark to navigate to it.

How can I get the distance to detected Land Mark or the position of it?

Answer 1

Here Aldebaran have posted very good example(No.3: Landmark localization) how this could be done.