Mark / tag detection - Indigo, help!

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Hi, I tried to do tag recognition with ardrone_autonomy, but it is not working. Is it possible to use this mechanism in Gazebo? (with tum_simulator package)

Please check screen:

I also read this information here but I have no idea what I am doing wrong. Is it necessary to do camera calibration even using Gazebo?

I also find that there are other option to do tag recognition, but It will also work in Indigo?

Packages like: http://wiki.ros.org/ar_pose or http://wiki.ros.org/ar_track_alvar

I don't have a lot experience with ROS, please tell we, what is the simplest way to do this? Which option will be better and simpler?

Thank you for your support.

Edit: I tried to install ar_pose, is this version compatible with ROS Indigo? Or I should use sth like this: https://github.com/srv/ccny_vision/tr... ?

Please help.