Scene three-dimensional data registration method and navigation system error correction method

Abstract

The invention discloses a scene three-dimensional data registration method. The method comprises the following steps: an inertial sensor and a visual sensor perform spatial calibration and time synchronization; the inertial sensor outputs pose information at two adjacent moments, and then transmits the pose information to the visual sensor, and the visual sensor performs data registration on two adjacent frames of data according to the pose information given by the inertial sensor; the pose variation of the visual sensor is worked out through the data registration of the visual sensor; the inertial sensor is subjected to real-time correction through the pose variation of the visual sensor; fifthly, data is registered to a three-dimensional map after data registration performed through the visual sensor. The scene three-dimensional data registration method and the navigation system error correction method perform registration on the inertial sensor through the visual sensor, solve vagueness during motion estimation performed by a single visual sensor or inertial sensor, improve the motion object detection performance, reduce the disadvantage that the error of the inertial sensor is accumulated with passage of time, and improve the precision of the inertial sensor.

Description

technical field [0001] The present invention relates to navigation systems, especially the technical field of navigation system error correction. Specifically, it shows a registration method based on three-dimensional scene data, and at the same time, it also shows a navigation system error correction method based on three-dimensional data registration method. Calibration method. Background technique [0002] Inertial sensors, as motion sensors with strong autonomy, have been widely used in motion measurement, navigation and positioning, etc. Among them, the inertial sensors used for navigation and positioning can be used to provide all navigation parameters such as position, velocity and attitude. [0003] In a navigation system with an inertial sensor, the performance of the inertial sensor is determined by sensor noise, deviation, scaling factor, and system calibration; the initialization estimation accuracy of the inertial sensor is high, when the inertial measurement da...

AI Technical Summary

Problems solved by technology

Navigation systems with inertial sensors can output or provide accurate short-term position, velocity, acceleration, attitude, and angular rate estimates, but errors accumulate over time and their positioning errors grow over time

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