SigmaCommand Class

Summary

Performs an edge preserving average filter on bitmap.

Syntax

Objective-C

C++/CLI

Python

public class SigmaCommand : RasterCommand

@interface LTSigmaCommand : LTRasterCommand

public ref class SigmaCommand : public RasterCommand

class SigmaCommand(RasterCommand):

Remarks

The amount of blur is controlled by specifying the size of the neighborhood.
This command supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.
This command does not support 32-bit grayscale images.

Sigma Function - Before

Sigma Function - After

View additional platform support for this Sigma function.

Example

Runs the SigmaCommand on the Image.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void SigmaCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "sample5.cmp")); 
 
   // Prepare the command 
   SigmaCommand command = new SigmaCommand(); 
   //Apply  
   command.Dimension = 10; 
   command.Sigma = 2; 
   command.Threshold = 0.2f; 
   command.Outline = false; 
   command.Run(image); 
 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
}