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:
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.
Polarized image registration method based on phase correlation and sub-graph
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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