image_rect_color doesn't work after default installation in simulation

[nampi]

Image_rect_color doesn't work after installation (http://wiki.ros.org/turtlebot/Tutorials/indigo/Turtlebot%20Installation) and launch rviz.

There are at least two decisions:

1. Change the default parameter Image Topic. (The default parameter for Image Topic can be: "/camera/depth/image_raw", "/camera/rgb/image_raw".)
2. Install the additional package "openni".

I've tested both decisions for simulation robot. They both worked. Which would be better? Then it should be tested on the real robot too.

You can find the primary problem there (http://answers.ros.org/question/197359/no-image-received-in-rviz-turtlebot-sim/#219957).