Abstract
Atmospheric correction is an important and essential procedure of high-quality remote sensing data for quantitative application and surface parameters retrieval, while aerosols and water vapor are larger temporal and spatial variation, which are the main factors restricting the accuracy of atmospheric correction. An Improved Dark Object Subtraction (IDOS) method is proposed in this paper. The new method retrieves the ancillary information on the aerosol optical depth (AOD) and total water vapor (TWV) from the multi-spectral information. The AOD and TWV obtained from the retrieval are used to optimize the DOS model. The experiment is carried out using data of Sentinel-2, which carries a Multispectral Instrument (MSI). The simulation results show that the visual effects, image clarity and image contrast of the remote sensing images are obviously improved; the atmospheric corrected reflectance curve is closer to measured typical objects reflectance curve in the terms of both spectral shape and reflectance value, indicating that the effect of atmosphere have been successfully removed by using the proposed algorithm. Compared with the traditional DOS technique, the IDOS method has greatly higher accuracy and practicality.
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Wang, Y., Wang, X., He, H., Tian, G. (2019). An Improved Dark Object Subtraction Method for Atmospheric Correction of Remote Sensing Images. In: Wang, Y., Huang, Q., Peng, Y. (eds) Image and Graphics Technologies and Applications. IGTA 2019. Communications in Computer and Information Science, vol 1043. Springer, Singapore. https://doi.org/10.1007/978-981-13-9917-6_41
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DOI: https://doi.org/10.1007/978-981-13-9917-6_41
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