RealSense Polled Camera

ROS 2 wrapper of Realsense Library that provides on-demand access to RGB and Depth images. This type of behavior is more common for space applications than constant streaming from sensors, which can consume large amounts of CPU and network resources.

Images are published to familiar topics, namely

# RGB images/info
~/color/image_raw
~/color/camera_info

# Depth images/info
~/depth/image_raw
~/depth/camera_info
~/pointcloud

Consumers of this node can reqest that images are polled and published by calling the ~/request_images trigger service.

Parameters, launch configuration, etc, are all similar to the upstream node, and can be used as such.

For example,

from ament_index_python.packages import get_package_share_directory
from launch import LaunchDescription
from launch.actions import IncludeLaunchDescription
from launch.launch_description_sources import PythonLaunchDescriptionSource

import os


def generate_launch_description():

    wrist_camera = IncludeLaunchDescription(
        PythonLaunchDescriptionSource(
            os.path.join(get_package_share_directory("realsense_polled_camera"), "launch", "rspc.launch.py")
        ),
        launch_arguments={
            "camera_name": "wrist_mounted_camera",
            "camera_namespace": "",
            "serial_no": "SERIAL_NO",
            "rgb_camera.color_profile": "1280,720,6",
            "depth_module.depth_profile": "320,180,6",
            "depth_module.infra_profile": "320,180,6",
            "initial_reset": "true",
            "pointcloud.enable": "true",
            "align_depth.enable": "true",
            "enable_depth": "true",
            "publish_tf": "true",
        }.items(),
    )

    return LaunchDescription([wrist_camera])