ROS Answers: Open Source Q&A Forum - RSS feed source question and answer forum written in Python and DjangoenROS Answers is licensed under Creative Commons Attribution 3.0Tue, 27 Aug 2019 14:07:54 -0500[Ros 2] depth_image_proc Windows 10 ROS Version- ROS 2 Dashing patch 1 Hi! I am trying to use the depth_image_proc library. I am trying to call the launch file for but I am getting an error that api_composition and api_composition_cli Does not Exist (Yes, I commented out the intel realsense line). [ROS 2 image_pipeline/depth_image_proc]( This is the error I receive right before it shuts down. [ERROR] [launch]: Caught exception in launch (see debug for traceback): executable 'api_composition' not found on the libexec directory 'C:\dev\ros2\lib\composition' Does anyone know how to properly launch this node? I am using components and containers for my projects currently, and even tried to make this node the same. My prediction is the api_composition_cli stuff is all out dated. I just need to be able to launch this node!! Edit: I also tried making it an rclcpp_component and I got an Exception thrown in the launch saying "undefined Reference" THank youzipp39Tue, 27 Aug 2019 14:07:54 -0500 message format for compressed pointcloud2?'m trying to subscribe the pointcloud message (~10MByte per frame) from a 3D camera, but find the DDS transmission consumed lots of bandwidth, and the latency is unacceptable under ROS2. Considering pointcloud is more and more important for robot usages and actually it has big potential to be compressed, I'd like to check if it's possible to add a new message format in [sensor_msgs](, something like CompressedPointCloud2 for the data compressed by pcl. Thus the transmission effectiveness will be improved a lot. Is there any other better idea?cathyshenTue, 24 Jul 2018 01:27:44 -0500