Filter which fuses angular velocities, accelerations, and (optionally) magnetic readings from a generic IMU device into a quaternion to represent the orientation of the device wrt the global frame. Based on the algorithm by Roberto G. Valenti etal. described in the paper "Keeping a Good Attitude: A Quaternion-Based Orientation Filter for IMUs and MARGs" available at http://www.mdpi.com/1424-8220/15/8/19302 .
copied from robostack-staging / ros-noetic-imu-complementary-filter