Method for acquiring optimal splicing line of ultra-large file remote sensing image

• Main Authors: CHAI XUCHAO, CHEN JIANYU
• Format: Patent
• Language: Chinese; English
• Published: 23.06.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention provides a method for acquiring an optimal splicing line of a super-large file remote sensing image, which comprises the following steps of: acquiring two super-large file remote sensing images with geographic coordinate reference, performing equal-resolution down-sampling processing on an overlapping region of the two super-large file remote sensing images, and establishing an undirected graph for pixel points after resolution reduction; searching the minimum cut of the undirected graph by using a graph cut algorithm to obtain a rough splicing line; generating a buffer area on the basis of the rough splicing line; obtaining a strip-shaped overlapping region of the two images obtained by mapping in the original ultra-large file remote sensing image in the buffer region; establishing an undirected graph for the pixel points in the strip-shaped overlapping region; and obtaining an optimal splicing line of the strip-shaped overlapping region by using a graph cut algorithm. According to the method,