MathematicalFunctionCommand Class

C#
Visual Basic
WinRT C#
Java
Objective-C
WinRT JavaScript
C++

public class MathematicalFunctionCommand : Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand

'Declaration

Public Class MathematicalFunctionCommand 
   Inherits Leadtools.ImageProcessing.RasterCommand
   Implements Leadtools.ImageProcessing.IRasterCommand

'Usage

Dim instance As MathematicalFunctionCommand

public sealed class MathematicalFunctionCommand : Leadtools.ImageProcessing.IRasterCommand

@interface LTMathematicalFunctionCommand : LTRasterCommand

public class MathematicalFunctionCommand extends RasterCommand

function Leadtools.ImageProcessing.Color.MathematicalFunctionCommand()

public ref class MathematicalFunctionCommand : public Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand

This class uses the RGB color space.
This class makes it possible to apply one of five mathematical functions to an image's pixel values: square, square root, logarithm, sine and cosine.
Set the mathematical operation to be performed on each pixel's values in the Type property. The resulting values are multiplied by the Factor property value. The Factor property can be any value greater than 0. It is divided internally by different amounts, according to the type of the function being used.
If the image has a region, the effect will be applied on the region only.
This class 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.

For more information, refer to Changing Brightness and Contrast.

Run the MathematicalFunctionCommand on an image with square function selected and factor = 50.

C#
Visual Basic
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Color

   
Public Sub MathematicalFunctionCommandExample()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ImageProcessingDemo\\NaturalFruits.jpg"))

   ' Prepare the command
   Dim command As MathematicalFunctionCommand = New MathematicalFunctionCommand
   command.Type = MathematicalFunctionCommandType.Square
   command.Factor = 50
   'Apply Square Function to this 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

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Color;

      
public void MathematicalFunctionCommandExample()
{
   // Load an image
   RasterCodecs codecs = new RasterCodecs();
   codecs.ThrowExceptionsOnInvalidImages = true;
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, @"ImageProcessingDemo\NaturalFruits.jpg"));

   // Prepare the command
   MathematicalFunctionCommand command = new MathematicalFunctionCommand();
   command.Type   = MathematicalFunctionCommandType.Square;
   command.Factor = 50;
   //Apply Square Function to this 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";
}

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Color;

      
public async Task MathematicalFunctionCommandExample()
{
   // Load an image
   RasterCodecs codecs = new RasterCodecs();
   codecs.ThrowExceptionsOnInvalidImages = true;
   // Load the image
   string srcFileName = @"Assets\Image1.cmp";
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   // Prepare the command
   MathematicalFunctionCommand command = new MathematicalFunctionCommand();
   command.Type   = MathematicalFunctionCommandType.Square;
   command.Factor = 50;
   //Apply Square Function to this image.
   command.Run(image);

   string destFileName = @"result.jpg";
   StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName);
   await codecs.SaveAsync(image, LeadStreamFactory.Create(saveFile), RasterImageFormat.Jpeg, 0);
}

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Color;
using Leadtools.Examples;

public void MathematicalFunctionCommandExample(RasterImage image, Stream outStream)
{
   // Prepare the command
   MathematicalFunctionCommand command = new MathematicalFunctionCommand();
   command.Type   = MathematicalFunctionCommandType.Square;
   command.Factor = 50;
   //Apply Square Function to this image.
   command.Run(image);
   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
}

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Color

Public Sub MathematicalFunctionCommandExample(ByVal image As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   Dim command As MathematicalFunctionCommand = New MathematicalFunctionCommand()
   command.Type = MathematicalFunctionCommandType.Square
   command.Factor = 50
   'Apply Square Function to this image.
   command.Run(image)
   ' Save result image
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24)
   image.Dispose()
End Sub

Target Platforms

Reference