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Semi-Automated Bathymetric Mapping Procedure for Landsat TM
Author(s): Smith, F and A. Shapiro
NCCOS Center: CCMA
Center Team: Biogeography
Publication Type: Proceedings
Date of Publication: 2005
Reference Information:
Keywords: Semi-Automated Bathymetric Mapping, Landsat TM, mapping procedure
Abstract: There have been many attempts to calculate bathymetry from the ratio of blue and green wavelengths of satellite
images. The most popular attempt is the Lyzenga (1978) method, which implements a linear logarithmic
transformation of the remotely sensed data. Many variations have been established since that initial work that have
increased the efficacy, and improved on the blue/green ratio approach substantially. One of the most recent attempts
is documented by Stumpf et.al. (2003), which introduces a methodology for calculating bathymetry from
multispectral satellite data, reducing the number of input variables to four: slope, y-intercept, and blue and green
deep-water calibration. The input variables are still manually trained, making this procedure highly dependent on
human interaction. This paper describes a method for automating all of the input variables while testing the accuracy
of automatically derived products against those derived from human training. The automated method is based on the
Stumpf et al. formula but uses a priori sample depths to calculate the most accurate inputs to the variables.
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