多傳感器融合定位(4-基于濾波的融合方法)kitti資料集 IMU頻率改為100HZ
本博文參考GEYAO 大神的github
另外GEYAO大神也給出了100HZ資料集的微云下載鏈接
本人自己根據 GEYAO大神制作的資料集,百度云下載
鏈接:https://pan.baidu.com/s/18XaZfkjf_WbI6rWl807Szg
提取碼:yrzr
到kitti 官網下載 2011_10_03_drive_0027 的extract資料集 (原來的 sync資料集為去除相機畸變的資料集,但是IMU發布頻率只有10HZ 顯然不滿足進行多傳感器融合處理,extract的資料集為raw_data ,IMU頻率為100HZ,但是沒有進行相機去畸變)
kitti 官網下載 2011_10_03_drive_0027 的extract資料集
網址 : http://www.cvlibs.net/datasets/kitti/raw_data.php?type=residential

解壓后
參考 GEYTAO 的github
將extract.zip中的oxts重命名為oxts_extract, 拷貝至sync的檔案目錄下
將sync中的oxts重命名為oxts_sync

修復時間戳例外
新建 scripts.py 原始碼來自 GEYTAO 的github
放在 /2011_10_03路徑下

注意使用python2 運行
python2 scripts.py -i 2011_10_03_drive_0027_sync

生成了 oxts檔案

修改kitti2bag原始碼
新建 kitti2bag.py 原始碼來自 GEYTAO 的github
放在 /2011_10_03 同一路徑下

注意 要使用 python2 運行
python2 kitti2bag.py -t 2011_10_03 -r 0027 raw_synced
開始生成 bag檔案

提高lidar-IMU-GNSS配準的精度, 方便evo的精度評估
根據GEYAO所說

下載 rosbag_filter_gui 工具 方便 洗掉topic
進入到自己的作業空間下,編譯運行
git clone https://github.com/AtsushiSakai/rosbag_filter_gui.git
下載 pyqt4
sudo apt install pyqt4
運行
python2 rosbag_filter_gui.py
刪掉 sync.bag 中的 /tf_static, /tf
選擇 synced.bag

select 需要keep的topic

生成 synced_filtered.bag
點擊 ok 后 轉換中

完成后 !!!


查看 rosbag filter 處理后的 synced_filter.bag 的 info
rosbag info synced_filtered.bag
可看到沒有了 /tf_static, /tf 兩個topic
path: synced_filtered.bag
version: 2.0
duration: 7:50s (470s)
start: Oct 03 2011 12:55:34.93 (1317617734.93)
end: Oct 03 2011 13:03:25.83 (1317618205.83)
size: 24.0 GB
messages: 54528
compression: none [18177/18177 chunks]
types: geometry_msgs/TwistStamped [98d34b0043a2093cf9d9345ab6eef12e]
sensor_msgs/CameraInfo [c9a58c1b0b154e0e6da7578cb991d214]
sensor_msgs/Image [060021388200f6f0f447d0fcd9c64743]
sensor_msgs/Imu [6a62c6daae103f4ff57a132d6f95cec2]
sensor_msgs/NavSatFix [2d3a8cd499b9b4a0249fb98fd05cfa48]
sensor_msgs/PointCloud2 [1158d486dd51d683ce2f1be655c3c181]
topics: /kitti/camera_color_left/camera_info 4544 msgs : sensor_msgs/CameraInfo
/kitti/camera_color_left/image_raw 4544 msgs : sensor_msgs/Image
/kitti/camera_color_right/camera_info 4544 msgs : sensor_msgs/CameraInfo
/kitti/camera_color_right/image_raw 4544 msgs : sensor_msgs/Image
/kitti/camera_gray_left/camera_info 4544 msgs : sensor_msgs/CameraInfo
/kitti/camera_gray_left/image_raw 4544 msgs : sensor_msgs/Image
/kitti/camera_gray_right/camera_info 4544 msgs : sensor_msgs/CameraInfo
/kitti/camera_gray_right/image_raw 4544 msgs : sensor_msgs/Image
/kitti/oxts/gps/fix 4544 msgs : sensor_msgs/NavSatFix
/kitti/oxts/gps/vel 4544 msgs : geometry_msgs/TwistStamped
/kitti/oxts/imu 4544 msgs : sensor_msgs/Imu
/kitti/velo/pointcloud 4544 msgs : sensor_msgs/PointCloud2
處理 extract.bag

保留 topic

查看 rosbag filter 處理后的 extracted_filtered.bag 的 info
rosbag info extracted_filtered.bag
extract.bag 只剩下 5個 topic
path: extracted_filtered.bag
version: 2.0
duration: 7:51s (471s)
start: Oct 03 2011 12:55:34.48 (1317617734.48)
end: Oct 03 2011 13:03:26.01 (1317618206.01)
size: 65.4 MB
messages: 229130
compression: none [84/84 chunks]
types: geometry_msgs/TwistStamped [98d34b0043a2093cf9d9345ab6eef12e]
sensor_msgs/Imu [6a62c6daae103f4ff57a132d6f95cec2]
sensor_msgs/NavSatFix [2d3a8cd499b9b4a0249fb98fd05cfa48]
tf2_msgs/TFMessage [94810edda583a504dfda3829e70d7eec]
topics: /kitti/oxts/gps/fix 45826 msgs : sensor_msgs/NavSatFix
/kitti/oxts/gps/vel 45826 msgs : geometry_msgs/TwistStamped
/kitti/oxts/imu 45826 msgs : sensor_msgs/Imu
/tf 45826 msgs : tf2_msgs/TFMessage
/tf_static 45826 msgs : tf2_msgs/TFMessage
重命名topic
rosrun rosbag topic_renamer.py /kitti/oxts/imu extracted_filtered.bag /kitti/oxts/imu/extract extracted_filtered2.bag
rosrun rosbag topic_renamer.py /kitti/oxts/gps/fix extracted_filtered2.bag /kitti/oxts/gps/fix/extract extracted_filtered3.bag
rosrun rosbag topic_renamer.py /kitti/oxts/gps/vel extracted_filtered3.bag /kitti/oxts/gps/vel/extract extracted_filtered4.bag
rosbag info extracted_filtered.bag
path: extracted_filtered4.bag
version: 2.0
duration: 7:51s (471s)
start: Oct 03 2011 12:55:34.48 (1317617734.48)
end: Oct 03 2011 13:03:26.01 (1317618206.01)
size: 65.4 MB
messages: 229130
compression: none [84/84 chunks]
types: geometry_msgs/TwistStamped [98d34b0043a2093cf9d9345ab6eef12e]
sensor_msgs/Imu [6a62c6daae103f4ff57a132d6f95cec2]
sensor_msgs/NavSatFix [2d3a8cd499b9b4a0249fb98fd05cfa48]
tf2_msgs/TFMessage [94810edda583a504dfda3829e70d7eec]
topics: /kitti/oxts/gps/fix/extract 45826 msgs : sensor_msgs/NavSatFix
/kitti/oxts/gps/vel/extract 45826 msgs : geometry_msgs/TwistStamped
/kitti/oxts/imu/extract 45826 msgs : sensor_msgs/Imu
/tf 45826 msgs : tf2_msgs/TFMessage
/tf_static 45826 msgs : tf2_msgs/TFMessage
使用 merge_bags.py合并 extracted_filtered4.bag 和 sync_filtered.bag
使用 GEYAO 的 scripts/merge_bags.py
合并 兩個 bag
python2 merge_bags.py 2011_10_03_filtered.bag synced_filtered.bag extracted_filtered4.bag
大功告成
path: 2011_10_03_filtered.bag
version: 2.0
duration: 7:51s (471s)
start: Oct 03 2011 12:55:34.93 (1317617734.93)
end: Oct 03 2011 13:03:26.01 (1317618206.01)
size: 24.1 GB
messages: 283658
compression: none [18260/18260 chunks]
types: geometry_msgs/TwistStamped [98d34b0043a2093cf9d9345ab6eef12e]
sensor_msgs/CameraInfo [c9a58c1b0b154e0e6da7578cb991d214]
sensor_msgs/Image [060021388200f6f0f447d0fcd9c64743]
sensor_msgs/Imu [6a62c6daae103f4ff57a132d6f95cec2]
sensor_msgs/NavSatFix [2d3a8cd499b9b4a0249fb98fd05cfa48]
sensor_msgs/PointCloud2 [1158d486dd51d683ce2f1be655c3c181]
tf2_msgs/TFMessage [94810edda583a504dfda3829e70d7eec]
topics: /kitti/camera_color_left/camera_info 4544 msgs : sensor_msgs/CameraInfo
/kitti/camera_color_left/image_raw 4544 msgs : sensor_msgs/Image
/kitti/camera_color_right/camera_info 4544 msgs : sensor_msgs/CameraInfo
/kitti/camera_color_right/image_raw 4544 msgs : sensor_msgs/Image
/kitti/camera_gray_left/camera_info 4544 msgs : sensor_msgs/CameraInfo
/kitti/camera_gray_left/image_raw 4544 msgs : sensor_msgs/Image
/kitti/camera_gray_right/camera_info 4544 msgs : sensor_msgs/CameraInfo
/kitti/camera_gray_right/image_raw 4544 msgs : sensor_msgs/Image
/kitti/oxts/gps/fix 4544 msgs : sensor_msgs/NavSatFix
/kitti/oxts/gps/fix/extract 45826 msgs : sensor_msgs/NavSatFix
/kitti/oxts/gps/vel 4544 msgs : geometry_msgs/TwistStamped
/kitti/oxts/gps/vel/extract 45826 msgs : geometry_msgs/TwistStamped
/kitti/oxts/imu 4544 msgs : sensor_msgs/Imu
/kitti/oxts/imu/extract 45826 msgs : sensor_msgs/Imu
/kitti/velo/pointcloud 4544 msgs : sensor_msgs/PointCloud2
/tf 45826 msgs : tf2_msgs/TFMessage
/tf_static 45826 msgs : tf2_msgs/TFMessage
查看話題發布頻率
10HZ發布
rostopic hz /kitti/oxts/imu
subscribed to [/kitti/oxts/imu]
average rate: 17.196
min: 0.012s max: 0.109s std dev: 0.04000s window: 10
average rate: 12.273
min: 0.012s max: 0.111s std dev: 0.03687s window: 19
average rate: 11.220
min: 0.012s max: 0.122s std dev: 0.03196s window: 29
average rate: 10.823
min: 0.012s max: 0.122s std dev: 0.02874s window: 38
average rate: 10.523
min: 0.012s max: 0.122s std dev: 0.02669s window: 48
average rate: 10.355
min: 0.012s max: 0.122s std dev: 0.02485s window: 58
average rate: 10.259
min: 0.012s max: 0.122s std dev: 0.02354s window: 67
^Caverage rate: 10.252
min: 0.012s max: 0.122s std dev: 0.02337s window: 68
100HZ發布
rostopic hz /kitti/oxts/imu/extract
subscribed to [/kitti/oxts/imu/extract]
average rate: 100.007
min: 0.008s max: 0.012s std dev: 0.00036s window: 95
average rate: 100.011
min: 0.008s max: 0.012s std dev: 0.00030s window: 195
average rate: 100.015
min: 0.008s max: 0.012s std dev: 0.00029s window: 295
average rate: 100.013
min: 0.008s max: 0.012s std dev: 0.00028s window: 396
average rate: 100.010
min: 0.008s max: 0.012s std dev: 0.00025s window: 496
average rate: 100.011
min: 0.008s max: 0.012s std dev: 0.00024s window: 596
average rate: 100.009
min: 0.008s max: 0.012s std dev: 0.00027s window: 696
average rate: 100.013
min: 0.007s max: 0.013s std dev: 0.00029s window: 796
average rate: 100.011
min: 0.007s max: 0.013s std dev: 0.00029s window: 896
average rate: 100.006
min: 0.007s max: 0.013s std dev: 0.00030s window: 996
average rate: 100.011
min: 0.007s max: 0.013s std dev: 0.00030s window: 1096
^Caverage rate: 100.011
min: 0.007s max: 0.013s std dev: 0.00030s window: 1111
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