Minnaert terrain correction model optimization method considering ground object type

• Main Authors: QIAO BAOJUN, ZHANG WANJUN, ZUO XIANYU, XIE YI, JIN YAN, LIN YINGHAO
• Format: Patent
• Language: Chinese; English
• Published: 12.05.2020
• Subjects: CALCULATING; COMPUTING; COUNTING; HANDLING RECORD CARRIERS; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS

The invention discloses a Minnaert terrain correction model optimization method considering a ground object type. The method comprises the steps that a classification system is designed according to surface feature types of remote sensing images, and the remote sensing images are classified; in combination with the imaging time of the remote sensing image and an auxiliary digital elevation model,obtaining the sun angle and topographic parameters of each pixel of the remote sensing image; solving a coefficient k of each ground object type of each wave band of the Minnaert ground correction model; carrying out Minnaert model application on the radiance of the corresponding wave band and the corresponding ground object type by using the ground object type coefficient k of each wave band, andcarrying out splicing processing to obtain image data after radiance terrain correction of each wave band; and the fitting slope of the radiance data and the cosine value of the solar incident angleand the fitting determinati