Coastal culture pond extraction method based on spatial similarity and corrected salt pan index

• Main Authors: LI GUANGXIN, SHI XIAOFEI, CHEN FANGYUAN, DENG ZHIYU, NI KUIYUAN, ZHANG XINPENG, LYU MIAO, SHEN ZIYANG
• Format: Patent
• Language: Chinese; English
• Published: 10.09.2021
• Subjects: CALCULATING; COMPUTING; COUNTING; HANDLING RECORD CARRIERS; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS

The invention provides a coast culture pond extraction method based on spatial similarity and a corrected salt pan index, and the method comprises the steps: obtaining Landsat-8 image data, and carrying out preprocessing of the Landsat-8 image data; performing strip-shaped water body positioning on the preprocessed image so as to obtain coastal zone water body image data, and extracting crystallizing pond area image data of a salt pan based on spectral difference of a crystallizing pond and a culture pond and strip-shaped texture features of the crystallizing pond; extracting reservoir area image data based on spatial distribution features of a reservoir and the crystallizing pond; and removing the crystallizing pond area image data and the reservoir area image data from the coastal zone water body image data so as to obtain culture pond area image information. According to the method, the salt pan-containing coastal zone culture pond of a multispectral image under the medium resolution can be effectively ext