unlimited submaps are created even in pure localization mode (with submaps<3)

[AmineDh98]

Hi all,

I am running the pure localization mode after getting the map by following the guide in the documentation. However, for some reason it could not localize itself in the map even after circulating a bit (it does not do the jump to the actual pose in the map) also it is still mapping. And when I visualize the submaps in Rviz I can see that it keeps generating submaps without removing the previous ones (it doesn't keep only 3 submaps) even though I added this to my lua file:

TRAJECTORY_BUILDER.pure_localization_trimmer = {
  max_submaps_to_keep = 3,
}

Following other issues I tried to tune the constraint builder parameters like decreasing POSE_GRAPH.global_sampling_ratio and POSE_GRAPH.constraint_builder.sampling_ratio , and increasing MAP_BUILDER.num_background_threads but I still get the same results.

here are 2 rosbags for navigation (each starting from different pose) if you want to try, you can generate a map with one and localize with the other https://drive.google.com/file/d/1utt9b6qj_FckTylwB-xE_STV4n0xjbC9/view?usp=sharing and https://drive.google.com/file/d/1-P5eRpGBk4TMwO54bNcAo6ne8rZax7Tn/view?usp=sharing

Or you can just use directly the generated pbstream map: https://drive.google.com/file/d/1A0qzmPLXuNT3JgYM58EE3UMEOdl2laTz/view?usp=sharing
Here is my configuration lua file:

include "map_builder.lua"
include "trajectory_builder.lua"

options = {
  map_builder = MAP_BUILDER,
  trajectory_builder = TRAJECTORY_BUILDER,
  map_frame = "world",
  tracking_frame = "robot_frame",
  published_frame = "robot_frame",
  odom_frame = "odom",
  provide_odom_frame = true,
  publish_frame_projected_to_2d = true,
  use_pose_extrapolator = true,
  use_odometry = true,
  use_nav_sat = false,
  use_landmarks = false,
  num_laser_scans = 0,
  num_multi_echo_laser_scans = 0,
  num_subdivisions_per_laser_scan = 5,
  num_point_clouds = 1,
  lookup_transform_timeout_sec = 0.2,
  submap_publish_period_sec = 0.3,
  pose_publish_period_sec = 5e-3,
  trajectory_publish_period_sec = 30e-3,
  rangefinder_sampling_ratio = 1.,
  odometry_sampling_ratio = 1.,
  fixed_frame_pose_sampling_ratio = 1.,
  imu_sampling_ratio = 1.,
  landmarks_sampling_ratio = 1.,
  publish_to_tf = true,
  publish_tracked_pose = true,
}

MAP_BUILDER.use_trajectory_builder_2d = true

TRAJECTORY_BUILDER_2D.num_accumulated_range_data = 5 --1
TRAJECTORY_BUILDER_2D.use_imu_data = false
TRAJECTORY_BUILDER_2D.max_range = 200
TRAJECTORY_BUILDER_2D.min_range = 0.5
TRAJECTORY_BUILDER_2D.missing_data_ray_length = 200.0 --5.0
TRAJECTORY_BUILDER_2D.min_z =1.0
TRAJECTORY_BUILDER_2D.max_z =5.0
MAP_BUILDER.num_background_threads = 8--4
TRAJECTORY_BUILDER_2D.voxel_filter_size = 0.025 --0.025
TRAJECTORY_BUILDER_2D.ceres_scan_matcher.occupied_space_weight=1.0 --1.0
TRAJECTORY_BUILDER_2D.ceres_scan_matcher.translation_weight = 2e2 --10.0
TRAJECTORY_BUILDER_2D.ceres_scan_matcher.rotation_weight = 4e2 --40.0

TRAJECTORY_BUILDER_2D.submaps.grid_options_2d.resolution = 0.07 --0.05
TRAJECTORY_BUILDER_2D.submaps.num_range_data = 90 --90

TRAJECTORY_BUILDER_2D.use_online_correlative_scan_matching = true



TRAJECTORY_BUILDER_2D.adaptive_voxel_filter = {
    max_length = 0.5, --0.5
    min_num_points = 200, --200
    max_range = 50., --50.0
}

TRAJECTORY_BUILDER_2D.loop_closure_adaptive_voxel_filter = {
  max_length = 0.9, --0.9
  min_num_points = 100, --100
  max_range = 50., --50.0
}


POSE_GRAPH.optimize_every_n_nodes = 100 --90


POSE_GRAPH.optimization_problem.odometry_translation_weight = 1e3 --1e5
POSE_GRAPH.optimization_problem.odometry_rotation_weight = 1 --1e5
POSE_GRAPH.optimization_problem.local_slam_pose_translation_weight=1e5 --1e5
POSE_GRAPH.optimization_problem.local_slam_pose_rotation_weight=1e5 --1e5

POSE_GRAPH.constraint_builder.loop_closure_translation_weight = 1.1e4 --1.1e4
POSE_GRAPH.constraint_builder.loop_closure_rotation_weight = 1e5 --1e5

POSE_GRAPH.matcher_translation_weight = 5e2--5e2
POSE_GRAPH.matcher_rotation_weight = 1.6e3--1.6e3



POSE_GRAPH.global_sampling_ratio =0.001 --0.003
POSE_GRAPH.constraint_builder.max_constraint_distance = 15.0 --15.0
POSE_GRAPH.constraint_builder.sampling_ratio= 0.1 --0.3
POSE_GRAPH.constraint_builder.min_score= 0.45 --0.55


POSE_GRAPH.global_constraint_search_after_n_seconds = 5.0 --10.

POSE_GRAPH.optimization_problem.huber_scale = 1e1 --1e1





POSE_GRAPH.max_num_final_iterations = 300 --200





return options

and here is my localization lua file:

include "frankenstein_reality.lua"

TRAJECTORY_BUILDER.pure_localization_trimmer = {
  max_submaps_to_keep = 3,
}

POSE_GRAPH.optimize_every_n_nodes = 5
return options