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Research on Image Registration Algorithm and Its Application in Photovoltaic Images
IEEE Journal of Photovoltaics ( IF 3 ) Pub Date : 2020-03-01 , DOI: 10.1109/jphotov.2019.2958149
Enyu Zhao 1 , Lan Li 1 , Meiping Song 1 , Yuejing Cao 1 , Shuhan Chen 2 , Xiaodi Shang 1 , Fang Li 1 , Sui Dai 3 , Haimo Bao 4
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Due to high similarity interference of photovoltaic images, repetitive EL image detection and photovoltaic image stitching pose a great challenge. This article proposes two application algorithms and a registration method, which are repetitive EL image detection and photovoltaic image stitching based on the proposed AKAZE-LATCH+GMS registration method. Considering the existence of duplicate EL images acquired indoors, a repetitive EL image detection based on global feature consistency and local cell's texture similarity is proposed. The AKAZE-LATCH+GMS is used to calculate global consistent feature ratio and dHash is used to quantify local cell's similarity to determine whether it is repetitive or not. To solve the problem of high similarity of outdoor photovoltaic images, which leads to dislocation of stitching, an image stitching algorithm based on geographic information is proposed in this article. Compared with AKAZE+GMS and ORB+GMS, the registration experimental results show that the AKAZE-LATCH+GMS method can obtain more initial matching features and higher correct matching rate. Indoor EL images with geometric and illumination differences are used to verify the proposed detection method, which can effectively eliminate repetitive EL images. Aerial photovoltaic images, acquired from the same or different view, are used to verify the validity of the stitching method, and the photovoltaic images can be stitched correctly compared with the stitching method without geographic information.

中文翻译:

图像配准算法及其在光伏图像中的应用研究

由于光伏图像的高相似性干扰,重复的EL图像检测和光伏图像拼接带来了很大的挑战。本文在提出的AKAZE-LATCH+GMS配准方法的基础上,提出了两种应用算法和一种配准方法,即重复EL图像检测和光伏图像拼接。考虑到室内采集的重复EL图像的存在,提出了一种基于全局特征一致性和局部单元纹理相似性的重复EL图像检测方法。AKAZE-LATCH+GMS用于计算全局一致性特征比率,dHash用于量化局部单元格的相似性,以确定是否重复。解决室外光伏图像相似度高导致拼接错位的问题,本文提出了一种基于地理信息的图像拼接算法。与AKAZE+GMS和ORB+GMS相比,配准实验结果表明AKAZE-LATCH+GMS方法可以获得更多的初始匹配特征和更高的正确匹配率。使用具有几何和光照差异的室内 EL 图像来验证所提出的检测方法,可以有效地消除重复的 EL 图像。利用从相同或不同视角获取的航空光伏影像来验证拼接方法的有效性,与没有地理信息的拼接方法相比,可以正确拼接光伏影像。配准实验结果表明,AKAZE-LATCH+GMS方法可以获得更多的初始匹配特征和更高的正确匹配率。使用具有几何和光照差异的室内 EL 图像来验证所提出的检测方法,可以有效地消除重复的 EL 图像。从相同或不同视角获取的航空光伏影像用于验证拼接方法的有效性,与没有地理信息的拼接方法相比,可以正确拼接光伏影像。配准实验结果表明,AKAZE-LATCH+GMS方法可以获得更多的初始匹配特征和更高的正确匹配率。使用具有几何和光照差异的室内 EL 图像来验证所提出的检测方法,可以有效地消除重复的 EL 图像。从相同或不同视角获取的航空光伏影像用于验证拼接方法的有效性,与没有地理信息的拼接方法相比,可以正确拼接光伏影像。
更新日期:2020-03-01
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