Abstract:For the application to the ground target matching system of the aircraft, an INS-aided (Inertial Navigation System) template correction method is proposed. Firstly, the perspective projection model of the ground target was established according to the position of target and the pose (position and attitude) of camera. Then, the correction equations between the templates were deduced according to their pose parameters. By analyzing the relationship of the depth of field between each point and the centric of the target, the correction equations were transformed to an easier solved form and a complete correction algorithm was proposed. In the experiment, a virtual target simulation platform was employed to get the real scenes corresponding to the INS information. In comparing the corrected template with the real-time scene, it is found that they are apparently consistent in scale, rotation, perspective, etc. Tracking with the corrected template can avoid the template drift, and improve the performances significantly.