Convolution operators illustrated

Echoview's convolution operators are best illustrated by example. Following are comparison tables using extracts from an echogram. Full size samples are available by clicking on any image.

Convolution operators   - apply to single-beam, split-beam and dual-beam echograms
Multibeam operators      - apply to multibeam echograms

Single beam convolution operators

 

Original

Predefined convolution kernel operators
 

Blur

Sharpen
 

Original.bmp

Blur.bmp

Sharpen.bmp
   
 

Convolution filter operators
 

Erosion

Median

Dilation

3x3

Erosion_3x3.bmp

Median_3x3.bmp

Dilation_3x3.bmp

5x5

Erosion_5x5.bmp

Median_5x5.bmp

Dilation_5x5.bmp

7x7

Erosion_7x7.bmp

Median_7x7.bmp

Dilation_7x7.bmp

Multibeam convolution operators

 

Original

Dual pass operators
 

Beam Opening

Beam Closing
 

Original_Multibeam.bmp

Beam_Opening_3x3.bmp

Beam_Closing_3x3.bmp
   
 

Single pass operators
 

Beam Erosion

Beam Median

Beam Dilation

3x3

Beam_Erosion_3x3.bmp

Beam_Median_3x3.bmp

Beam_Dilation_3x3.bmp

See also

Convolution operators
Convolution algorithms

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.