In Gazebo, my robot can't see AR tag
OS : Ubuntu 16.04 ROS : Kinetic Simulator : Gazebo
I made an AR tag model using Blender. (.dae) And make a SDF file for Gazebo. I can see the AR tag in Gazebo.
<?xml version='1.0'?>
<sdf version='1.6'>
<model name='ar_tag_00'>
<pose>4 0 0 0 0 0</pose>
<static>true</static>
<link name="ar_00">
<visual name="visual">
<pose>2 0 0 0 0 0</pose>
<geometry>
<mesh><uri>model://ar_tags_for_turtlebot3_exp_house/meshes/ar_tag_00.dae</uri></mesh>
</geometry>
</visual>
</link>
</model>
</sdf>
But, my robot can't see the AR tag. It just see the box !!! In Rviz, it is same. Robot can't sense any obstacle(LIDAR). But, In camera, robot can see the box..
I don't know why. Please help me.
If you link to some pictures hosted elsewhere I or someone else can embed them in the question.