%A BU Lijing, WU Wenyu, ZHANG Zhengpeng, YANG Yin %T A priori guided method for improving the quality of Luojia01-1 NTL image with multiple degradation features %0 Journal Article %D 2023 %J Acta Geodaetica et Cartographica Sinica %R 10.11947/j.AGCS.2023.20210679 %P 244-259 %V 52 %N 2 %U {http://xb.chinasmp.com/CN/abstract/article_12944.shtml} %8 %X There are many complex degradation phenomena in nighttime light remote sensing image of Luojia01-1, such as cloud, glow, reduced resolution, and so on. The existing deep learning-based networks for image quality improvement often only aim at a certain type of degradation problems,and do not make full use of the priori information of the image, the interpretability of the training and learning process is poor, and the type of degradation removed is single. Therefore, aiming at the problem of image quality improvement with multiple complex degradation features, an interpretable a priori guided nighttime light remote sensing image quality improvement method with multiple degradation features is proposed. Firstly, the degradation process and performance are analyzed, and a comprehensive degradation model of glow, cloud noise, and spatial resolution degradation is derived. Taking the model as a priori guide, three kinds of data sets of cloud glow, and resolution are constructed. In terms of network structure, for three kinds of degradation, a residual dense convolution neural network including channel attention module and pixel attention module is designed, and the ratio sparse constraint loss function is used to further improve the clarity of the image. The experiment is carried out with the nighttime light remote sensing image of Luojia01-1. The results show that the method proposed in this paper can effectively remove the influence of cloud and fog and glow. After processed, the image light edge information is clearer, the spatial resolution is improved, and the image quality is improved obviously.