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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.中国科学院大学, 北京 100049
3.中国科学院国家天文台长春人造卫星观测站, 吉林 长春 130117
[ "万钇良(1993-), 男, 辽宁鞍山人, 硕士研究生, 2016年于中国科学技术大学获得学士学位, 主要研究方向为图像处理算法。E-mail:liangshu@mail.ustc.edu.cn" ]
[ "王建立(1971-), 男, 山东曲阜人, 研究员, 博士生导师, 2002年于长春光学精密机械与物理研究所获得博士学位, 主要从事空间目标探测技术和地基高分辨率成像望远镜总体技术等方面的研究。E-mail:wangjianli@ciomp.ac.cn" ]
收稿日期:2019-01-22,
录用日期:2019-3-14,
纸质出版日期:2019-05-05
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万钇良, 王建立, 张楠, 等. 一种基于相位相关与子图像的偏振图像配准方法[J]. 液晶与显示, 2019,34(5):530-536.
Yi-liang WAN, Jian-li WANG, Nan ZHANG, et al. Polarized image registration method based on phase correlation and sub-graph[J]. Chinese journal of liquid crystals and displays, 2019, 34(5): 530-536.
万钇良, 王建立, 张楠, 等. 一种基于相位相关与子图像的偏振图像配准方法[J]. 液晶与显示, 2019,34(5):530-536. DOI: 10.3788/YJYXS20193405.0530.
Yi-liang WAN, Jian-li WANG, Nan ZHANG, et al. Polarized image registration method based on phase correlation and sub-graph[J]. Chinese journal of liquid crystals and displays, 2019, 34(5): 530-536. DOI: 10.3788/YJYXS20193405.0530.
为了解决多目偏振相机在获取图像中需要进行准确配准的问题,本文提出了一种基于子图像的相位相关算法。算法首先对图像进行噪声减弱与细节增强,并进行粗配准。之后在将图像分割为多个子图,对每个对应区域的子图进行配准,并剔除配准误差较大的子图,以减少它们对于最终配准结果的不良影响。最后根据这些子图的配准参数来计算单应性矩阵,完成最终的配准。实验结果表明,对于3种不同场景的图像,相比于传统方法,本文方法的配准结果归一化互信息值均有所提高,至多提高0.067%且图像细节更清晰。与传统算法相比,本文算法对于低清晰度、大噪声的图像具有更好的配准效果。
To solve the problem that multi-lens polarization cameras need accurate registration in acquiring images
this paper proposes a phase correlation algorithm based on sub-image. The algorithm first performs noise reduction and detail enhancement on the image followed by a coarse registration. Then the image is divided into multiple subgraphs
the subgraph of each corresponding area is registered
and the subgraphs with large registration errors is eliminated to reduce their adverse effects on the final result. Finally the univariate matrix is calculated according to the registration parameters of the remaining subgraphs to complete the final registration. The experimental results show that for all three different types of images
the proposed algorithm improves both the normalized mutual information values
up to 0.067%
and the image details. Compared with the original algorithm
the proposed algorithm has a better registration effect for low definition and high noise images.
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