Satellite image non-uniform thin cloud removal method and system

• Main Authors: HUANG RUI, JIANG SILI, CHANG XIAWEI, NIU XIANGHUA, HUANG WEI
• Format: Patent
• Language: Chinese; English
• Published: 05.11.2021
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention discloses a satellite image non-uniform thin cloud removal method and system. The method comprises the following steps: acquiring cloud remote sensing data of a satellite; screening and normalizing the data, and selecting minimum value data of three wave band data according to the normalized data to construct a first matrix; performing minimum filtering processing on a matrix block with a preset size in the first matrix to obtain a dark channel matrix; selecting pixel data in the normalized data corresponding to the positions of the brightest n pixel points in the dark channel matrix to construct a second matrix; averaging pixel values in the second matrix to obtain atmospheric light; calculating a transmissivity map according to the atmospheric light and the dark channel matrix; determining first reduction data according to the transmissivity map and the atmospheric light; and restoring the extreme pixel data according to the position information data to obtain second restored data. According t