README.md

Video Publisher Method

This guide provides step-by-step instructions for setting up and running the Video Publisher project in a ROS Node. Follow these steps to ensure proper setup and execution.

Setup and Execution

1. Clean the Build Environment

   • Navigate to the main project directory and remove the build and devel directories if they exist:

     rm -r build devel
     

2. Configure Video Path

   • Update the video path in the video_playback.launch file located at /src/image_publisher/launch with the path to your .h264 video file.

3. Build the Project

   • In the main folder, build the project using the catkin_make command:

     catkin_make
     

4. Source Setup Script

   • Source the environment setup script to update your environment:

     source devel/setup.bash
     

5. Launch Video Playback

   • Change directory to where video_playback.launch is located and launch the video playback:

     cd src/image_publisher/launch
     roslaunch video_playback.launch
     

6. Verify Video Publishing

   • Check if the video is being published successfully:

     rostopic list
     

7. Restart ROS Core

   • If needed, terminate the roslaunch, start roscore first, and then repeat the video playback launch:

     roslaunch video_playback.launch
     

8. Camera Calibration

   • Run the camera calibration tool:

     rosrun camera_calibration cameracalibrator.py --size 8x6 --square 0.03 image:=/cam0/image_raw