Reduction of Atmospheric Effects in Satellite Images During the COVID-19 Induced Lockdown

摘要: The quality of satellite images is affected due to the scattering and absorption sunlight by atmospheric molecules aerosols. Aerosols are small particles suspended in atmosphere which affects air quality. concentration characteristics aerosols can vary from place place. major constituents for formation haze thus responsible degradation images. During novel corona virus disease pandemic (COVID-19) countrywide lockdown India, level significantly lowered north Indian cities Indo-Gangetic plain. In this paper, an analysis image was done Sentinel-2A/2B different with respect impact on sharpness surface reflectance values during pre-lockdown period. evaluated through power spectrum, gradient, image. It observed that increased period reduction levels atmosphere. There increase spectrum 5% (minimum) 12% (maximum) blue band, 4% 10% green 1.7% 6% red band plain Since additive component images, it also had decreased visible bands features have low like water (30%), vegetation (21%) barren land (17%) high building (19%)