

FOLLOWUS
1.College of Oceanography and Space Informatics, China University of Petroleum (East China), Qingdao 266580, China
2.Qingdao Ecological and Environment Monitoring Center of Shandong Province, Qingdao 266003, China
3.National Satellite Ocean Application Service, Beijing 100081, China
4.Key Laboratory of Space Ocean Remote Sensing and Application, Ministry of Natural Resources (MNR), Beijing 100081, China
xumingming900405@126.com
sheng@upc.edu.cn
Received:10 October 2021,
Published:01 May 2023
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WAN Jianhua,WAN Xianci,SUN Lie,et al.,Ulva prolifera subpixel mapping with multiple-feature decision fusion[J].Journal of Oceanology and Limnology,2023,41(03):865-880.
The unavoidable nature of
Ulva prolifera
mixed pixel in low-resolution remote sensing images would result in rough boundary of
U
.
prolifera
patches
omission of tiny patches
and overestimation of coverage area. The decomposition of
U
.
prolifera
mixed pixel addresses the issue of coverage area overestimation
and the remaining problems can be alleviated by subpixel mapping (SPM). Due to the drift and dissipation of
U
.
prolifera
a suitable SPM method is the single image-based unsupervised method. However
the method has difficulties in detail reconstruction
insufficient learning of spectral information
and SPM error introduced by abundance deviation. Therefore
we proposed a multiple-feature decision fusion SPM (MFDFSPM) method. It in
volves three branches to obtain the spatial
abundance
and spectral features of
U
.
prolifera
while considers multi-feature information using the fusion strategy. Experiments on the Geostationary Ocean Color Imager images in the Yellow Sea of China indicate that the MFDFSPM overperforms several typical
U
.
prolifera
SPM methods in higher accuracy and stronger robustness in both SPM and abundance calculation
which produced subpixel map with more detailed spatial information and less noise.
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