@article{xu_sun_luo_2013,  title={Noise estimation of hyperspectral remote sensing image based on multiple linear regression and wavelet transform},  volume={19},  ISSN={1982-2170},  url={https://doi.org/10.1590/S1982-21702013000400008},  DOI={10.1590/S1982-21702013000400008},  number={4},  journal={Boletim de Ciências Geodésicas},  publisher={Universidade Federal do Paraná},  author={Xu, Dong and Sun, Lei and Luo, Jianshu},  year={2013},  month={Oct},  pages={639–652} }