The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 28, 2025
Filed:
Apr. 26, 2022
Satellite Application Center for Ecology and Environment, Mee, Beijing, CN;
Wuhan University, Wuhan, CN;
Chen Wang, Beijing, CN;
Jixi Gao, Beijing, CN;
Chao Wang, Beijing, CN;
Jianhui Zhang, Beijing, CN;
Xuelei Wang, Beijing, CN;
Yihuang Nie, Beijing, CN;
Xing Jia, Beijing, CN;
Huan Zhao, Beijing, CN;
Shoujing Yin, Beijing, CN;
Qian Zhao, Beijing, CN;
Xiaogang Zhang, Beijing, CN;
Yanting Wu, Beijing, CN;
Dan Xu, Beijing, CN;
Hao Sun, Beijing, CN;
Nan Wang, Beijing, CN;
Hongyan Yang, Beijing, CN;
Bin Meng, Beijing, CN;
Yaming Zhou, Beijing, CN;
Satellite Application Center for Ecology and Environment, MEE, Beijing, CN;
Wuhan University, Wuhan, CN;
Abstract
The present disclosure provides a method, apparatus, medium and device for extracting a river drying-up region and frequency, and belongs to the technical field of remote sensing. The method for extracting a river drying-up region and frequency can be applied to efficiently acquiring river drying-up information for a long time within the large spatial region. With the inverse normalized difference water index (iNDWI) and the maximum value composite (MVC) method for the remote sensing images, the present disclosure omits the troublesome step of separately extracting a river range for each image in the conventional method. In addition, the present disclosure quickly obtains the drying-up frequency by counting the total number of available images and the number of non-water images at the same pixel position, and yields a greater efficiency for extracting the river drying-up region and frequency.