QTC SIDEVIEW seabed classification results from Iceland. The data are courtesy of Hafmynd, Ltd. . A Gavia AUV equipped with a Marine Sonic sidescan sonar acquired the data. The original purpose of the survey was to locate a pipeline in a lake.

QTC SIDEVIEW seabed classification results from Spain. The Imagenex Yellowfin sidescan sonar data were processed by and are courtesty of Ecohydros . The interpolated classification is overlaid on vertically exaggerated bathymetry. The data is from Es Freus (Ses Salines Natural Park), midway between Ibiza and Formentera Islands. The analysis successfully identified distinct regions covered by Posidonia and Cymodocea seagrass in addition to changes in sediment type.

QTC MULTIVIEW seabed classification results from Patricia Bay, Vancouver Island, BC, Canada. The Simrad EM3000 multibeam data were acquired and processed by the Canadian Hydrographic Service, Pacific Region. The interpolated classification is overlaid on vertically exaggerated bathymetry.

St. John, New Brunswick Harbour classification results from the backscatter images acquired in April 2000 overlaid on sun-illuminated bathymetry from the same survey. Processing with QTC MULTIVIEW resulted in six acoustically distinct classes. The data have been interpolated to 5 m grid spacings. So that the bathymetry can be seen only every fifth point is plotted, which causes some Moiré patterns. This unpublished data is courtesy of Natural Resources Canada and Environment Canada.

Acoustic classification of Edgetech sidescan sonar data from Bazan Bay, near Sidney, British Columbia, Canada. Classification was performed with QTC SIDEVIEW™ and categorical interpolation with QTC CLAMS. QTC SIDEVIEW generated in excess of 25,000 points, each being assigned one of five classes, including the class representing a sewer pipe. QTC SIDEVIEW was used to display a line of Edgetech sidescan sonar data. The software used a patent pending technique to enhance the image. QTC CLAMS was used to interpolate ("fill in the spaces") between data points. It uses 'similarity colours' so acoustically similar seabeds have similar colours. The continuous black line is indicative of a sewer pipe. These data are courtesy of Terra Remote Sensing Inc. - Marine Division.

Reson 8101 sun-illuminated bathymetry of approaches to Portsmouth Harbor, NH. Acoustic classes are from Reson 8101 images processed in QTC SIDEVIEW (mid) and in QTC MULTIVIEW (right). Image is from Automated acoustic classification of sidescan images, Preston et al., Oceans 2004.