RevEffectCommand Class

Summary

Adds a pseudo-3D wave effect to the image by drawing lines across the image, basing the line's height at each point on its brightness at that point. This command is available in the Imaging Pro and above toolkits.

Syntax

C++

public class RevEffectCommand : RasterCommand

  
Public Class RevEffectCommand  
   Inherits RasterCommand

public ref class RevEffectCommand : public RasterCommand

Remarks

This command adds a pseudo-3D wave effect to the image . It is similar to the Rutt-Etra Video Synthesizer. The Rutt-Etra video synthesizer was a processor that modulated the deflection lines of a television image so that they appeared to adopt the contours of objects. It was invented by Steve Rutt and Bill Etra in the 1970s.
With this command, you set the maximum height to be used for the pixels with the maximum brightness value. The other pixel heights are calculated by linear interpolation. Each line is 1 pixel in width. Control the spacing between the lines that are drawn across the image with the LineSpace parameter.
You can get a more stable wave by performing the following:
1. Apply any type of blur like Leadtools.ImageProcessing.Effects.GaussianCommand blur with a large radius value.
2. Apply the RevEffectCommand and pass a small value for the maximum height.
3. This command does not support 32-bit grayscale images.
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.

For more information, refer to Applying Artistic Effects.

Example

Run the RevEffectCommand on an image.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.SpecialEffects; 
 
public void RevEffectCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "sample5.cmp")); 
 
   // Prepare the command 
   RevEffectCommand command = new RevEffectCommand(); 
   command.LineSpace = 3; 
   command.MaximumHeight = 35; 
   //Apply Rev effect on the image. 
   command.Run(image); 
   codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24); 
 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
}

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.SpecialEffects 
 
Public Sub RevEffectCommandExample() 
   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 RevEffectCommand = New RevEffectCommand 
   command.LineSpace = 3 
   command.MaximumHeight = 35 
   'Apply Rev effect on the image. 
   command.Run(leadImage) 
   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:\Users\Public\Documents\LEADTOOLS Images" 
End Class