ROS_notes

Use ROS to visualize KITTI data

First install kitti2bag. Follow the construction to create a rosbag.

Follow this to visualize the image and lidar points on rviz.

here is some source code of how to create ros msgs.

Sending video over ROS

It is faster to encode the video stream to bytes (e.g. in mjpeg), then send the bytes, instead of sending an image array.

ROS markers

Here is a tutorial on how to create basic markers using python.

ROS synchronization

Use chrony to synchronize across machines. tutorial

ROS with Gazebo

Installation

Problem1

Turtlebot tutorial

1 2 3 4

How to deal with coordinate transformation

here