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Multispectral bathymetry using a simple physically based algorithm

机译:使用简单的基于物理的算法进行多光谱测深

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摘要

A simple method for estimating water depths from multispectral imagery is described and is applied to several IKONOS data sets for which independent measurements of the water depth are available. The methodology is based on a physical model for the shallow-water reflectance, and is capable of correcting for at least some range of water-quality and bottom-reflectance variations. Corrections for sun-glint effects are applied prior to the application of the bathymetry algorithm. The accuracy of the depth algorithm is determined by comparison with ground-truth measurements, and comparisons between the observed and calculated radiances are presented for one case to illustrate how the algorithm corrects for water-attenuation and/or bottom-reflectance variations.
机译:描述了一种从多光谱图像估算水深的简单方法,该方法已应用于可独立测量水深的IKONOS数据集。该方法基于浅水反射率的物理模型,并且能够校正至少一定范围的水质和底部反射率变化。在应用测深算法之前,先对日照效应进行校正。深度算法的精度是通过与地面实测值进行比较来确定的,并针对一种情况给出了观察到的和计算出的辐射率之间的比较,以说明该算法如何校正水衰减和/或底部反射率的变化。

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