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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Rank deficiency in GVINS #30

Open Weirdo-p opened 2 years ago

Weirdo-p commented 2 years ago

Hi, thanks for your great work and sorry for disturbing you several times. I just try to understand details in code. In the optimization function, all the observations are put together with initial guesses and then optimize all the parameters. However, no prior informations(covariance) are provided like MSCKF or constant point in the ORBSLAM. So, maybe the whole optimization step is rank deficiet? But all parameters are estimated correctly. Are there any detials that I missed during code reading? I am looking forward to your reply. Thanks in advance.