velo64_imu.lua

-- Copyright 2016 The Cartographer Authors
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
--      http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.

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

options = {
  map_builder = MAP_BUILDER,
  trajectory_builder = TRAJECTORY_BUILDER,
  map_frame = "map",
  tracking_frame = "imu_link",
  published_frame = "base_link",
  odom_frame = "odom",
  provide_odom_frame = true,
  use_odometry = false,
  use_laser_scan = false,
  use_multi_echo_laser_scan = false,
  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,
}

--changed the below line
TRAJECTORY_BUILDER_3D.scans_per_accumulation = 1

MAP_BUILDER.use_trajectory_builder_3d = true
MAP_BUILDER.num_background_threads = 7
SPARSE_POSE_GRAPH.optimization_problem.huber_scale = 5e2
SPARSE_POSE_GRAPH.optimize_every_n_scans = 320
SPARSE_POSE_GRAPH.constraint_builder.sampling_ratio = 0.03
SPARSE_POSE_GRAPH.optimization_problem.ceres_solver_options.max_num_iterations = 10
-- Reuse the coarser 3D voxel filter to speed up the computation of loop closure
-- constraints.
SPARSE_POSE_GRAPH.constraint_builder.adaptive_voxel_filter = TRAJECTORY_BUILDER_3D.high_resolution_adaptive_voxel_filter
SPARSE_POSE_GRAPH.constraint_builder.min_score = 0.62

return options