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GlowCommand Class

Makes the colored edges shine with a neon glow. This command is available in the Imaging Proo and above toolkits.
public class GlowCommand : RasterCommand 
Public Class GlowCommand  
   Inherits RasterCommand 
public ref class GlowCommand : public RasterCommand   
  • This command detects the edge pixels by comparing the values of the pixel with surrounding pixels and if the edge value (the difference between the surrounding pixels and the pixel being evaluated) is greater than the Threshold value, the pixel is an edge pixel. The command then multiplies the values for the edge pixels by the brightness factor.
  • This command supports 12-bit and 16-bit grayscale and 48-bit and 64-bit color images. Support for 12-bit and 16-bit grayscale and 48-bit and 64-bit color images is available only in the Document/Medical toolkits.
  • This command does not support signed data images.
  • This command does not support 32-bit grayscale images.

For more information, refer to Correcting Colors. For more information, refer to Detecting and Enhancing Edges and Lines.


Run the GlowCommand on an image.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.SpecialEffects; 
public void GlowCommandExample() 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "sample5.cmp")); 
   // Prepare the command 
   GlowCommand command = new GlowCommand(); 
   command.Dimension = 5; 
   command.Brightness = 3; 
   command.Threshold = 0; 
   // Apply glow effect on the image. 
   codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24); 
static class LEAD_VARS 
   public const string ImagesDir = @"C:\LEADTOOLS21\Resources\Images"; 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.SpecialEffects 
Public Sub GlowCommandExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "sample5.cmp")) 
   ' Prepare the command 
   Dim command As GlowCommand = New GlowCommand 
   command.Dimension = 5 
   command.Brightness = 3 
   command.Threshold = 0 
   ' Apply glow effect on the image. 
   codecs.Save(leadImage, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24) 
End Sub 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\LEADTOOLS21\Resources\Images" 
End Class 

Target Platforms

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Leadtools.ImageProcessing.SpecialEffects Assembly