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军械工程学院导弹工程系,河北 石家庄,050003
收稿日期:2015-04-29,
修回日期:2015-06-25,
纸质出版日期:2015-09-25
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崔少辉, 谢征, 王刚等. 二进制鲁棒不变尺度特征匹配电子稳像[J]. 光学精密工程, 2015,23(9): 2715-2723
CUI Shao-hui, XIE Zheng, WANG Gang etc. Feature matching electronic image stabilization based on binary robust invariant scalable keypionts[J]. Editorial Office of Optics and Precision Engineering, 2015,23(9): 2715-2723
崔少辉, 谢征, 王刚等. 二进制鲁棒不变尺度特征匹配电子稳像[J]. 光学精密工程, 2015,23(9): 2715-2723 DOI: 10.3788/OPE.20152309.2715.
CUI Shao-hui, XIE Zheng, WANG Gang etc. Feature matching electronic image stabilization based on binary robust invariant scalable keypionts[J]. Editorial Office of Optics and Precision Engineering, 2015,23(9): 2715-2723 DOI: 10.3788/OPE.20152309.2715.
针对捷联图像制导系统中视频序列受弹体姿态变化和抖动而出现的不稳定现象
提出了一种基于二进制鲁棒不变尺度特征关键点(BRISK)的高精度快速鲁棒电子稳像算法。首先
用BRISK算法提取图像BRISK特征描述符;为了保证匹配精度和速度
采用引导互匹配策略实现BRISK特征点跟踪匹配;然后
利用改进的随机抽样一致方法(RANSAC)剔除误匹配点对;最后
利用最小二乘算法(LSA)估计全局运动参数进而实现稳像。对标准图片的匹配测试和实拍视频稳像的结果表明:结合BRISK算法的电子稳像技术
运行时间小于30 ms
定位精度达到0.1 pixel
对光照变化、噪声以及复杂环境遮挡具有较强的鲁棒性
能快速有效地补偿捷联制导图像的复杂随机抖动并提高视频质量。
To overcome the instability of video sequences caused by attitude changes and jitters of a projectile in the strapdown image guidance system
a robust high-precision fast electronic image stabilization algorithm based on Binary Robust Invariant Salable Keypoints(BRISK) was proposed. Firstly
the BRISK algorithm was used to extract BRISK feature descriptors of the image. To improve the matching accuracy and speeds
the mutual matching strategy was adopted to realize BRISK matching feature point tracking. Then
the improved Random Sample Consensus (RANSAC) method was used to eliminate the false matching points.Finally
the Least Square Algorithm (LSA) was taken to estimate the global motion parameters to realize image stabilization. The standard image matching test and real video shoot image results show that the strapdown image guidance stabilization technology based on BRISK algorithm can provide short processing time less than 30 ms and high positioning accuracy of 0.1 pixel. Moreover
the technology has stronger robustness to changed illumination
noise and complex environment barrier and can quickly and effectively compensate complex random jitters and improve the quality of video images.
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