Reproducibility of single-beam acoustic seabed classification

Art Gleason, Jon Preston, Steve Bloomer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Single-beam acoustic seabed classification continues to be a popular method for mapping seabeds and their sediments. Modern methods can generate maps of acoustic classes that are useful and reasonably accurate. Research toward improved methods continues. A continuing impediment to this research is ranking the accuracy of maps produced by new methods. Nonacoustic data, or ground truth, is usually sparse compared to the detail of the acoustic survey, which can mean that ranking maps for accuracy can be inconclusive. Here we present a new tool for ranking classification maps, namely the reproducibility of acoustic classes from repeated surveys of the same area on different days. Methods that have high reproducibility achieve that by capturing echo characteristics that are strongly influenced by seabed type while suppressing details that are driven by sea state or the water column. Six surveys, done with a 50 kHz sounder over a pair of transects near Miami, FL, USA, between 1 May and 13 August 2007, were used to evaluate two questions. First, how reproducible were classifications of this dataset using QTC IMPACT™ (Quester Tangent Corporation)? Second, can classification be improved with adjustments to the standard IMPACT processing? Reproducibility was quantified with the overall accuracy and Kappa statistics, which are both derived from the confusion matrix whose rows and columns are numbers of sites with particular class assignments under distinct circumstances.

Original languageEnglish (US)
Title of host publicationMTS/IEEE Biloxi - Marine Technology for Our Future
Subtitle of host publicationGlobal and Local Challenges, OCEANS 2009
StatePublished - 2009
EventMTS/IEEE Biloxi - Marine Technology for Our Future: Global and Local Challenges, OCEANS 2009 - Biloxi, MS, United States
Duration: Oct 26 2009Oct 29 2009

Publication series

NameMTS/IEEE Biloxi - Marine Technology for Our Future: Global and Local Challenges, OCEANS 2009

Other

OtherMTS/IEEE Biloxi - Marine Technology for Our Future: Global and Local Challenges, OCEANS 2009
Country/TerritoryUnited States
CityBiloxi, MS
Period10/26/0910/29/09

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Information Systems
  • Electrical and Electronic Engineering
  • Ocean Engineering

Fingerprint

Dive into the research topics of 'Reproducibility of single-beam acoustic seabed classification'. Together they form a unique fingerprint.

Cite this