How to create a .bag from processed images using cv_bridge?
Hi, I have to process images from a .bag file (in ROS kinetic) which contains sensor_msgs/Image type of messages. I'm following this tutorial where processed images are shown in CV window. How can I show and store processed images using ROS? How can I make a new topic (for example named "processed") and publish processed images to it? I'm confused whether I have to write a new node or add this reverse procedure to an existing one (like this tutorial).