There are several robotic applications that deal with 2D and 3D data, usually in the form of images or point cloud. ROS provides interfaces that are built upon the OpenCV library to solve computer vision problems for complex robotics applications.
Visualizing non-scalar data – 2D/3D images
Getting ready
There are several extremely useful tools available in ROS to visualize these types of data, such as image_view and rqt_image_view for 2D data. Similarly, in ROS, we have rviz and rqt_rviz, which integrates an OpenGL interface with a 3D world that represents sensor data in a world representation.