rpng / open_vins

An open source platform for visual-inertial navigation research.
https://docs.openvins.com
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ROS2 Initialzation error #442

Closed VivekMangeUD closed 1 month ago

VivekMangeUD commented 6 months ago

Hello

I am facing initialization error when testing Openvins on my Laptop Ubuntu 22. Even after moving in random direction and Jerk motions, Its not able to initialize openvins. I have attached a recording for the same. I have also shared the launch file to run the node. I tried changing the below 3 varaibles in the estimator config file but still same results

init_window_time: 2.0 # how many seconds to collect initialization information init_imu_thresh: 1.5 # threshold for variance of the accelerometer to detect a "jerk" in motion init_max_disparity: 10.0

I am also facing issue visualizing the messages on terminal even with verbosity:= DEBUG

ros2 launch ov_msckf ros2_aqua2_subscribe.launch verbosity:=DEBUG [INFO] [launch]: Default logging verbosity is set to INFO [INFO] [run_subscribe_msckf-1]: process started with pid [176172]

Launch File

from launch import LaunchDescription from launch.actions import DeclareLaunchArgument, LogInfo, OpaqueFunction from launch.conditions import IfCondition from launch.substitutions import LaunchConfiguration, TextSubstitution from launch_ros.actions import Node from ament_index_python.packages import get_package_share_directory, get_package_prefix import os import sys

launch_args = [ DeclareLaunchArgument(name='namespace', default_value='', description='namespace'), DeclareLaunchArgument(name='config', default_value='aqua2_sync', description='euroc_mav, tum_vi, rpng_aruco...'), DeclareLaunchArgument(name='verbosity', default_value='DEBUG', description='ALL, DEBUG, INFO, WARNING, ERROR, SILENT'), DeclareLaunchArgument(name='use_stereo', default_value='true', description=''), DeclareLaunchArgument(name='max_cameras', default_value='2', description='') ]

def launch_setup(context): configs_dir=os.path.join(get_package_share_directory('ov_msckf'),'config') available_configs = os.listdir(configs_dir) config = LaunchConfiguration('config').perform(context) if not config in available_configs: return[LogInfo(msg='ERROR: unknown config: \'{}\' - Available configs are: {} - not starting OpenVINS'.format(config,', '.join(available_configs)))] config_path = os.path.join(get_package_share_directory('ov_msckf'),'config',config,'estimator_config.yaml') node1 = Node(package = 'ov_msckf', executable = 'run_subscribe_msckf', namespace = LaunchConfiguration('namespace'), parameters =[{'verbosity': LaunchConfiguration('verbosity')}, {'use_stereo': LaunchConfiguration('use_stereo')}, {'max_cameras': LaunchConfiguration('max_cameras')}, {'config_path': config_path}]) return [node1]

def generate_launch_description(): opfunc = OpaqueFunction(function = launch_setup) ld = LaunchDescription(launch_args) ld.add_action(opfunc) return ld

estimator_config

%YAML:1.0 # need to specify the file type at the top!

verbosity: "DEBUG" # ALL, DEBUG, INFO, WARNING, ERROR, SILENT

use_fej: true # if first-estimate Jacobians should be used (enable for good consistency) integration: "rk4" # discrete, rk4, analytical (if rk4 or analytical used then analytical covariance propagation is used) use_stereo: true # if we have more than 1 camera, if we should try to track stereo constraints between pairs max_cameras: 2 # how many cameras we have 1 = mono, 2 = stereo, >2 = binocular (all mono tracking)

calib_cam_extrinsics: true # if the transform between camera and IMU should be optimized R_ItoC, p_CinI calib_cam_intrinsics: true # if camera intrinsics should be optimized (focal, center, distortion) calib_cam_timeoffset: true # if timeoffset between camera and IMU should be optimized calib_imu_intrinsics: false # if imu intrinsics should be calibrated (rotation and skew-scale matrix) calib_imu_g_sensitivity: false # if gyroscope gravity sensitivity (Tg) should be calibrated

max_clones: 11 # how many clones in the sliding window max_slam: 50 # number of features in our state vector max_slam_in_update: 25 # update can be split into sequential updates of batches, how many in a batch max_msckf_in_update: 40 # how many MSCKF features to use in the update dt_slam_delay: 1 # delay before initializing (helps with stability from bad initialization...)

gravity_mag: 9.81 # magnitude of gravity in this location

feat_rep_msckf: "GLOBAL_3D" feat_rep_slam: "ANCHORED_MSCKF_INVERSE_DEPTH" feat_rep_aruco: "ANCHORED_MSCKF_INVERSE_DEPTH"

try_zupt: false zupt_chi2_multipler: 0 # set to 0 for only disp-based zupt_max_velocity: 0.1 zupt_noise_multiplier: 10 zupt_max_disparity: 0.5 # set to 0 for only imu-based zupt_only_at_beginning: false

init_window_time: 2.0 # how many seconds to collect initialization information init_imu_thresh: 1.5 # threshold for variance of the accelerometer to detect a "jerk" in motion init_max_disparity: 10.0 # max disparity to consider the platform stationary (dependent on resolution) init_max_features: 50 # how many features to track during initialization (saves on computation)

init_dyn_use: false # if dynamic initialization should be used init_dyn_mle_opt_calib: false # if we should optimize calibration during intialization (not recommended) init_dyn_mle_max_iter: 50 # how many iterations the MLE refinement should use (zero to skip the MLE) init_dyn_mle_max_time: 0.05 # how many seconds the MLE should be completed in init_dyn_mle_max_threads: 6 # how many threads the MLE should use init_dyn_num_pose: 6 # number of poses to use within our window time (evenly spaced) init_dyn_min_deg: 10.0 # orientation change needed to try to init

init_dyn_inflation_ori: 10 # what to inflate the recovered q_GtoI covariance by init_dyn_inflation_vel: 100 # what to inflate the recovered v_IinG covariance by init_dyn_inflation_bg: 10 # what to inflate the recovered bias_g covariance by init_dyn_inflation_ba: 100 # what to inflate the recovered bias_a covariance by init_dyn_min_rec_cond: 1e-12 # reciprocal condition number thresh for info inversion

init_dyn_bias_g: [ 0.0, 0.0, 0.0 ] # initial gyroscope bias guess init_dyn_bias_a: [ 0.0, 0.0, 0.0 ] # initial accelerometer bias guess

record_timing_information: false # if we want to record timing information of the method record_timing_filepath: "/tmp/traj_timing.txt" # https://docs.openvins.com/eval-timing.html#eval-ov-timing-flame

save_total_state: false filepath_est: "/tmp/ov_estimate.txt" filepath_std: "/tmp/ov_estimate_std.txt" filepath_gt: "/tmp/ov_groundtruth.txt"

use_klt: true # if true we will use KLT, otherwise use a ORB descriptor + robust matching num_pts: 200 # number of points (per camera) we will extract and try to track fast_threshold: 20 # threshold for fast extraction (warning: lower threshs can be expensive) grid_x: 5 # extraction sub-grid count for horizontal direction (uniform tracking) grid_y: 5 # extraction sub-grid count for vertical direction (uniform tracking) min_px_dist: 10 # distance between features (features near each other provide less information) knn_ratio: 0.70 # descriptor knn threshold for the top two descriptor matches track_frequency: 21.0 # frequency we will perform feature tracking at (in frames per second / hertz) downsample_cameras: false # will downsample image in half if true num_opencv_threads: 4 # -1: auto, 0-1: serial, >1: number of threads histogram_method: "HISTOGRAM" # NONE, HISTOGRAM, CLAHE

use_aruco: false num_aruco: 1024 downsize_aruco: true

up_msckf_sigma_px: 1 up_msckf_chi2_multipler: 1 up_slam_sigma_px: 1 up_slam_chi2_multipler: 1 up_aruco_sigma_px: 1 up_aruco_chi2_multipler: 1

use_mask: false

relative_config_imu: "kalibr_imu_chain.yaml" relative_config_imucam: "kalibr_imucam_chain.yaml"

kalibr_imu_chain

%YAML:1.0

imu0: T_i_b:

kalibr_imucam_chain

%YAML:1.0

cam0: T_imu_cam: #rotation from camera to IMU R_CtoI, position of camera in IMU p_CinI

Screencast from 05-01-2024 08:16:42 PM.webm

goldbattle commented 6 months ago

You are correct that theses config variables should be tuned. I would first get your console logging working. Does adding this to your node show anything?

    output='screen',
    emulate_tty=True,

https://answers.ros.org/question/332829/no-stdout-logging-output-in-ros2-using-launch/

VivekMangeUD commented 6 months ago

The snippet didn't work well but I used the snippet from the ROS answers and it worked to get the information on the terminal.

**output='screen',
emulate_tty=True,**

I have shared the window output and also the recordings of the test. Recording link : https://drive.google.com/file/d/1m4vtrllglC6UgjXBH550nz2rtp1pWb2D/view?usp=sharing

Update Launch file

def launch_setup(context): configs_dir=os.path.join(get_package_share_directory('ov_msckf'),'config') available_configs = os.listdir(configs_dir) config = LaunchConfiguration('config').perform(context) if not config in available_configs: return[LogInfo(msg='ERROR: unknown config: \'{}\' - Available configs are: {} - not starting OpenVINS'.format(config,', '.join(available_configs)))] config_path = os.path.join(get_package_share_directory('ov_msckf'),'config',config,'estimator_config.yaml') node1 = Node(package = 'ov_msckf', executable = 'run_subscribe_msckf', namespace = LaunchConfiguration('namespace'), output={ 'stdout': 'screen', 'stderr': 'screen'}, parameters =[{'verbosity': LaunchConfiguration('verbosity')}, {'use_stereo': LaunchConfiguration('use_stereo')}, {'max_cameras': LaunchConfiguration('max_cameras')}, {'config_path': config_path}]) return [node1]

ros_openvins_terminal_output_log.txt

Also, Can you help me with some information about the initialization process to better understand how it works and what different motion should I perform to trigger it or what params should I tune to get it triggered.

VivekMangeUD commented 1 month ago

The system is working now.

The issue was the time difference between IMU and Camera message. The system had a time dfifference of 1sec