1. 图像和IMU数据-->rosbag
kalibr_bagcreater --folder /home/xue/桌面/cali/storage06011455/. --output-bag camimu.bag
2. rosbag-->图像和IMU数据
kalibr_bagextractor --imu-topics /imu0 --output-folder TMP-data --bag camimu.bag
kalibr_bagextractor --image-topics /cam0/image_raw --output-folder /home/xue/kalibr/TMP-data/cam0 --bag camimu.bag