About 2D school detection

Echoview allows you to detect schools from single beam data, obtained while cruise scanning or from a fixed platform.

The resulting schools can be viewed as 2D regions on echograms. The detection properties of 2D regions can be seen on the Region Browser dialog box.  

A single edge detection algorithm is available for use on single beam data. The detection can be applied when live-viewing data or at the post-processing stage. Following a detection, region classification with rules can be applied.

Detected regions may be characterized with exported analysis variables.

In the example below, three schools are displayed along with the water surface and sea bottom. The three schools were detected using different threshold settings. The school on the right is selected.

Note: You can also import 2D regions from .evr files, see Importing regions for more information.

See also:

School Detection module
Using the School detection module

About 3D school detection

Detecting schools on single beam data