Method and system for correcting camera pointing angle in an actively stabilized system to compensate for translational movements

摘要

A active stabilization system and a method for correcting a pointing direction of a camera to compensate for translational movements of the camera are described. The system actively stabilizes a pointing direction of the camera in accordance with a commanded pointing angle. A distance from the camera to a filming target is determined and one or more translational measurements associated with a translational movement of the camera are derived. A correction update is calculated as a function of at least the distance and the one or more translational measurements. The commanded pointing angle of the camera is adjusted based on the correction update to retain the filming target within a field of view of the camera.

主权项

1. A method for correcting a pointing direction of a camera, actively stabilized by an active stabilization system in accordance with a commanded pointing angle, to compensate for translational movements of the camera, the method comprising:
determining a distance from the camera to a filming target; deriving one or more translational measurements associated with a translational movement of the camera; calculating a correction update as a function of at least the distance and the one or more translational measurements, wherein the function provides correction updates of lower values for the camera having a higher elevation in relation to the filming target than for the camera having a lower elevation in relation to the filming target for translational movements of a same magnitude; and adjusting the commanded pointing angle of the camera based on the correction update to retain the filming target within a field of view of the camera.