基于圆周投影匹配的电子稳像技术研究  

Research of Electronic Image Stability Based on the Circular Projection Matching

作　　者：蔡昌金[1,2] 李友毅[1,2,3] 朱明[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [2]中国科学院研究生院,北京100039 [3]空军航空大学军事仿真技术研究所,吉林长春130022

出　　处：《压电与声光》2009年第3期341-343,共3页Piezoelectrics & Acoustooptics

摘　　要：图像不稳定的实质是摄像系统的光轴与目标之间存在无效的相对运动,其中包括平移运动和角运动。传统的结构化模板只能在序列间存在小角度的情况下有效,对大角度旋转的图像则无能为力。为了实时地稳定摄像系统的输出视频序列,提出了一种基于特征匹配的实时电子稳像算法。将分块的Harris算子用于特征提取,并提出利用归一化圆周投影的特征匹配算法来解决图像大角度旋转的问题。仿真和实验证明了该方法不仅能有效地实现帧间平移运动的补偿,而且还可对大角度的旋转运动进行补偿。The image instability is caused by the idle relative motion between the optic axis of the camera system and the object, in which the translational movement and the angle movement are included. The conventional framework only effectively acts in small angle rotation and is invalid in large angle rotation. In order to stabilize the output video of camera system in a real time,a real-time electronic image stabilizing algorithm based on the feature matching is presented. The parted Harris arithmetic operators were applied to the feature extracting,and the feature matching algorithm of the unitary circular projection was used to resolve the problem of rotation in a large angel. The simulation and experiment confirmed that this method not only realizes the compensation of the frames translational movement but also the compensation of the rotational movement in large angle.

关 键 词：电子稳像 HARRIS角点 圆投影匹配 旋转不变性 

分 类 号：TP312[自动化与计算机技术—计算机软件与理论]