Detecting schools on single beam data

Schools are detected from the data displayed in an echogram by thresholding the data and using an edge detection algorithm.

Before you begin

See About 2D schools detection for an overview before detecting schools.

See Using the schools module and Schools detection module for detailed information before detecting schools.

Detecting schools - post-processing

To detect schools over an entire echogram:

1. On the Echogram menu, click Detect Schools.
2. Enter the required settings on the Detect schools dialog box.
3. Click Detect.

To detect schools in a selection on an echogram:

1. Make a selection
2. On the Shortcut menu (right-click), click Detect Schools
3. Enter the required settings on the Detect schools dialog box.
4. Click Detect.

Detecting schools while live-viewing

To detect schools on new data arriving during live viewing:

1. On the Regions page of the Variable Properties dialog box, select Automatically detect schools during live viewing
   
   - AND -

1. Begin live viewing from an echosounder using an Echolog application.

See Schools detection while live viewing algorithm for more specific information on how schools are created while live viewing.

Classify regions after the detection

You can classify detected (school) regions using pre-specified Rules immediately after the schools detection and after schools detection while live viewing. For more information refer to Classify regions.

See also

Schools detection module
Using the schools module
Detect school groups
About setting variable properties

Echoview Help file 5.1.25 for Echoview 5.1.45 Wednesday 1st  February 2012

Please report any errors or omissions to support@echoview.com.