Funding for this research was provided by:
National Natural Science Foundation of China (61462063, 61601216, 61602233)
Aeronautical Science Foundation of China (20185756006)
Specialized Research Fund for the Doctoral Program of Higher Education of China (EA201804229)
Foundation of Key Laboratory of Image Processing and pattern Recognition of Jiangxi Province (TX201504005)
Received: 16 October 2019
Accepted: 26 February 2020
First Online: 19 March 2020
Ethics approval and consent to participate
: Not applicable.
: This manuscript contains no individual person’s data in any form.
: The authors declare that they have no competing interests.