HKUST-Aerial-Robotics / GVINS

Tightly coupled GNSS-Visual-Inertial system for locally smooth and globally consistent state estimation in complex environment.
GNU General Public License v3.0
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IMU correction #43

Open Camilochiang opened 1 year ago

Camilochiang commented 1 year ago

Great work, code and paper!

When looking at the datasheet of the ADIS16448 and your paper, your dataset should have X to the right of the helmet, Z axis to the front and Y axis down. This can be confirmed with the bag values (please correct me if I'm wrong) 20221024_gvins

Similar, the camera matrix rotation need to be corrected to fit the IMU as this is the body frame (as indicated in the paper).

Question: Where do you correct the IMU to real world coordinates system? I have not been able to found it. My coordinate system is not the same (X to the front, Y to the left and Z to the top), what make the algorithm fail

Thanks!