Bathymetry using an underwater color locus

Authors

  • Jenny S. Aggangan National Institute of Physics, University of the Philippines Diliman
  • Maricor Soriano National Institute of Physics, University of the Philippines Diliman

Abstract

We present a new technique which retrieves water depth (bathymetry) information from an underwater color locus. The underwater color locus contains the range of possible colors which a white object can take for a certain depth range. The color locus model is based on the exponential attenuation of light by the water column and requires a priori knowledge of the water diffuse attenuation coefficients for the site. After employing a camera calibration transform, the experimental and the transformed-simulated loci are shown to coincide in rgz space. The loci confirm the theoretical attenuation of light with depth, indicating a liner decrease in the red color signal and conversely, a linear increase in the green signal with depth. This asserts the potential use of the rg information provided by an underwater color locus for depth estimation.

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Issue

Article ID

SPP-2006-3F-02

Section

Image and Signal Processing

Published

2006-10-25

How to Cite

[1]
JS Aggangan and M Soriano, Bathymetry using an underwater color locus, Proceedings of the Samahang Pisika ng Pilipinas 24, SPP-2006-3F-02 (2006). URL: https://proceedings.spp-online.org/article/view/SPP-2006-3F-02.