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Bathymetry of the Coral Reefs of Weizhou Island Based on Multispectral Satellite Images
Huang, RY; Yu, KF; Wang, YH; Wang, JK; Mu, L; Wang, WH; rongyonghuang@163.com; kefuyu@scsio.ac.cn; wyh@gxu.edu.cn; jikun363@163.com; mulin999@126.com; wwhuan258@163.com
2017
发表期刊REMOTE SENSING
卷号9期号:7页码:750-
摘要Shallow water depth measurements using multispectral images are crucial for marine surveying and mapping. At present, relevant studies either depend on the use of other auxiliary data (such as field water depths or water column data) or contain too many unknown variables, thus making these studies suitable only for images that contain enough visible wavebands. To solve this problem, a Quasi-Analytical Algorithm (QAA) approach is proposed in this paper for estimating the water depths around Weizhou Island by developing a QAA to estimate the diffuse attenuation coefficients and simplifying the parameterization of the bathymetric model. The approach contains an initialization sub-approach and a novel global adjustment sub-approach. It is not only independent of other auxiliary data but also greatly reduces the number of unknowns. Experimental results finally demonstrated that the Root Mean Square Errors (RMSEs) were 1.01 m and 0.77 m for the ZY-3 image and the WorldView-3 (WV-3) image, respectively, so the approach is competitive to other QAA bathymetric methods. Besides, the global adjustment sub-approach was also seen to be superior to common smoothing filters: if the Signal-to-Noise Ratio (SNR) is as low as 42, i.e., ZY-3, it can smooth the water depths and improve the accuracies, otherwise can avoid the over-smoothing of water depths.
部门归属[Huang, Rongyong; Yu, Kefu; Wang, Yinghui; Wang, Jikun; Wang, Wenhuan] Guangxi Univ, Coral Reef Res Ctr China, Nanning 530004, Peoples R China; [Huang, Rongyong; Yu, Kefu; Wang, Yinghui; Wang, Jikun; Wang, Wenhuan] Guangxi Univ, Guangxi Lab Study Coral Reefs South China Sea, Nanning 530004, Peoples R China; [Huang, Rongyong; Yu, Kefu; Wang, Yinghui; Wang, Jikun; Wang, Wenhuan] Guangxi Univ, Sch Marine Sci, Nanning 530004, Peoples R China; [Mu, Lin] Guangxi Univ, Inst Complex Sci & Big Data Technol, Nanning 530004, Peoples R China
关键词Water Depth Coral Reef Multispectral Image Bathymetry Adjustment
资助项目MSG
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/16515
专题中科院边缘海地质重点实验室
通讯作者rongyonghuang@163.com; kefuyu@scsio.ac.cn; wyh@gxu.edu.cn; jikun363@163.com; mulin999@126.com; wwhuan258@163.com
推荐引用方式
GB/T 7714
Huang, RY,Yu, KF,Wang, YH,et al. Bathymetry of the Coral Reefs of Weizhou Island Based on Multispectral Satellite Images[J]. REMOTE SENSING,2017,9(7):750-.
APA Huang, RY.,Yu, KF.,Wang, YH.,Wang, JK.,Mu, L.,...&wwhuan258@163.com.(2017).Bathymetry of the Coral Reefs of Weizhou Island Based on Multispectral Satellite Images.REMOTE SENSING,9(7),750-.
MLA Huang, RY,et al."Bathymetry of the Coral Reefs of Weizhou Island Based on Multispectral Satellite Images".REMOTE SENSING 9.7(2017):750-.
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