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5.6.  Sobel

Revision History
Revision $Revision: 1.20 $ 2006-11-20 j.h

5.6.1.  Overview

Figure 11.87.  Applying example of the Sobel filter

Applying example of the Sobel filter
Applying example of the Sobel filter

You can find this filter through Filters->Edge detect->Sobel.

Sobel's filter detects horizontal and vertical edges separately on a scaled image. Color images are turned into RGB scaled images. As with the Laplace filter, the result is a transparent image with black lines and some rest of colors.

5.6.2.  Options

Figure 11.88.  Sobel filter options

Sobel filter options
Parameters Settings
  • Sobel Horizontally: Renders near horizontal edges.

  • Sobel Vertically: Renders near vertical edges.

  • Keep sign of result: This option works when only one direction is selected: it gives a flat relief with bumps and hollows to the image.


 
 
  Published under the terms of the GNU General Public License Design by Interspire