Habitat Classification

Echosounder backscatter measurements of the bottom (whether seabed, lake bottom or riverbed) can provide information about the nature of that substrate (e.g. hard/soft, rough/smooth, sand/gravel etc.) and its bathymetry.

As the most flexible, integrated and transparent tool for bottom classification from single- and split-beam echosounder data, Echoview® enables you to:

  • Explore and calibrate your data
  • Account for noise and other artifacts
  • Define the bottom depth
  • Visualize and synchronize acoustic and video data
  • Identify and characterize the first and second bottom echoes (feature extraction)
  • Quantify and simplify the variance in the bottom features by Principal Component Analysis (PCA)
  • Cluster bottom points into classes by k-means clustering

Whether this information is used independently (unsupervised classification) or coupled with other environmental variables (supervised classification), Echoview provides a convenient yet powerful way to objectively describe the bottom and help to understand its role as habitat for aquatic organisms.

Echosounder data from Sydney Harbour showing the first and second bottom echoes, and concurrent towed-video footage from just above the bottom (click to enlarge)

Bottom classification in Echoview

Echoview offers algorithms for the classification of echosounder data from the seafloor, lake bottom and riverbed.

The new Habitat Classification module integrates smoothly into Echoview’s familiar and powerful workflow. Users can bring their echosounder data from supported file formats into Echoview, visualize, calibrate and correct it for any artifacts, extract an extensive range of bottom features and statistically analyze these features to generate robust bottom classes. For more information about Habitat Classification in Echoview, see our video.