Image Compressed ROS Package

ROS2 Support Available

branch - ros2

Overview

The image_compressed package is a ROS node designed to subscribe to image topics, compress the images using JPEG encoding, and publish the compressed images to new topics. This package is useful for reducing the bandwidth usage when transmitting images over a ROS network.

Features

• Subscribes to all available sensor_msgs/Image topics.
• Compresses images using JPEG encoding with configurable quality.
• Publishes the compressed images to new topics with a /compressed suffix.
• Automatically updates the list of image topics and handles new or lost topics dynamically.

Dependencies

• ROS (Robot Operating System)
• OpenCV
• cv_bridge

Installation

1. Make sure you have ROS installed on your system.
2. Install the required dependencies:

   sudo apt-get install ros-<ros-distro>-cv-bridge ros-<ros-distro>-image-transport
   sudo apt-get install libopencv-dev

3. Clone the image_compressed package into your catkin workspace:

   cd ~/catkin_ws/src
   git clone <repository-url>
   cd ~/catkin_ws
   catkin_make

Usage

To run the image_compressed node, use the following command:

rosrun image_compressed image_compressed_node

Configuration

The JPEG quality for image compression can be configured through a ROS parameter. The default quality is set to 95.