Comparison of three empirical methods for water depth mapping with case study of Pratas Island

Ailian Chen; Boqin Zhu

doi:10.1117/12.2204945

6 August 2015 Comparison of three empirical methods for water depth mapping with case study of Pratas Island

Ailian Chen, Boqin Zhu

Proceedings Volume 9669, Remote Sensing of the Environment: 19th National Symposium on Remote Sensing of China; 96690H (2015) https://doi.org/10.1117/12.2204945
Event: Remote Sensing of the Environment: 19th National Symposium on Remote Sensing of China, 2014, Xian City, China

Abstract

Statistical methods to map water depth from medium-high resolution multispectral images were easier and more popular than wave spectrum bathymetry or water scattering-based implementation. However, less studies compared the effectiveness of the popular statistical methods for pelagic islands. This study used the Log ratio transform, primary component analysis and independent component analysis methods to retrieve water depth of Pratas Island,using one Landsat 8 Operational Land Imager (OLI) image. Results showed that the Log ratio transformation was not the best method as the proposer suggested. The first primary component and the second independent component are good predictors for absolute water depth ranging from 0 to 20m, while Log Ratio was more sensitive to water depth ranging from 0 to 5m, IC2 was sensitive to water depth between 5 and 10 m.

Citation Download Citation

Ailian Chen and Boqin Zhu "Comparison of three empirical methods for water depth mapping with case study of Pratas Island", Proc. SPIE 9669, Remote Sensing of the Environment: 19th National Symposium on Remote Sensing of China, 96690H (6 August 2015); https://doi.org/10.1117/12.2204945

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