电子稳像可有效减轻或消除有/无人机侦察、导弹末端制导、视频监控过程中产生的视频抖动。针对视频帧补偿过程中出现大幅度失稳帧的情况提出了一种视频补偿方法,首先利用平移运动模型估计全局位移和图像重叠区域,使用帧差法检测出运动目标区域,之后建立仿射变换模型提取了图像帧的ORB特征点,消除了位移过大或过小的匹配点、位移图像非重叠区域内的匹配点、运动目标上的匹配点、有线段交叉的匹配点。实验证明,该方法可有效消除视频稳像过程中的大幅度失稳帧,提高了视频补偿的精度。

Electronic image stabilization(EIS) technique could reduce or eliminate the video jitter produced in the process of helicopter/UAV reconnaissance, missile terminal guidance and video surveillance. In view of appearing greatly instable frame in the process of video frame compensation, a video frame compensation method is proposed in this paper. Firstly, the global displacement and image overlap by using translational motion model are estimated. And the moving target area by using frame difference method is detected. Then, the ORB feature points of image frames is extracted. Through the above process, four species of incorrect feature points are removed. Experimental results show that this method can effectively eliminate greatly instable frame and improve the accuracy of the video compensation.