Recovery of underwater object reflectance

Authors

Mary Ann Go ⋅ PH National Institute of Physics, University of the Philippines Diliman
Maricor Soriano ⋅ PH National Institute of Physics, University of the Philippines Diliman
Caesar Saloma ⋅ PH National Institute of Physics, University of the Philippines Diliman
Kathleen Silvano ⋅ PH Marine Science Institute, University of the Philippines Diliman
Olivia Cabrera ⋅ PH Marine Science Institute, University of the Philippines Diliman
B. Canto ⋅ PH Marine Science Institute, University of the Philippines Diliman
Laura David ⋅ PH Marine Science Institute, University of the Philippines Diliman

Abstract

The reflectance of underwater objects at a certain depth can be obtained with knowledge of the radiance illuminating it at that depth. Here we recover the reflectances of underwater objects using the color signal from a standard target of known reflectance. An estimate of the at-depth radiance as measured from the surface is obtained using the diffuse attenuation coefficient k(z,λ) and Beer's Law. Since k(z,λ) estimates require the same integration times for measurement at different depths, we develop a technique to recover the spectrum at one integration time given the spectra captured at other integration times. All measured and estimated spectra are found to agree.

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Issue

2003: Proceedings of the 21st Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP-2003-3E-05

Section

Instrumentation Physics

Published

2003-10-22

How to Cite

[1]

MA Go, M Soriano, C Saloma, K Silvano, O Cabrera, B Canto, and L David, Recovery of underwater object reflectance, Proceedings of the Samahang Pisika ng Pilipinas 21, SPP-2003-3E-05 (2003). URL: https://proceedings.spp-online.org/article/view/SPP-2003-3E-05.