←Select platform

ApplyMathematicalLogicCommand Class

Summary

Performs specific mathematical or logical operations on the colors of the image.

Syntax

C#
VB
Java
Objective-C
WinRT C#
C++
public sealed class ApplyMathematicalLogicCommand : Leadtools.Imageprocessing.Leadtools.ImageProcessing.IRasterCommand
@interface LTApplyMathematicalLogicCommand : LTRasterCommand
public class ApplyMathematicalLogicCommand extends RasterCommand
function Leadtools.ImageProcessing.Color.ApplyMathematicalLogicCommand()

Remarks
  • 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.

*Calculating Master Channel Values

In order to speed up widely used image processing filters in LEADTOOLS, the grayscale value (master channel) of a colored image is calculated using the following formulas:

#define CalcGrayValue(r, g, b) ((L_UCHAR)(((L_UCHAR) (((2 * (L_UINT) (r)) + (5 * (L_UINT) (g)) + (L_UINT) (b) + 4) / 8)))) 
#define CalcGrayValue16(r, g, b) ((L_UINT16) (((2 * (L_UINT32) (r)) + (5 * (L_UINT32) (g)) + (L_UINT32) (b) + 4) / 8)) 
#define CalcGrayValue32(r, g, b) ((L_UINT32) (((2 * (L_UINT32) (r)) + (5 * (L_UINT32) (g)) + (L_UINT32) (b) + 4) / 8)) 

For more information, refer to Changing Brightness and Contrast. For more information, refer to Correcting Colors. For more information, refer to Flags for ApplyMathematicalLogicCommand.

Example

Run the ApplyMathematicalLogicCommand on an image.

C#
VB
WinRT C#
Silverlight C#
Silverlight VB
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Color 
 
    
Public Sub ApplyMathematicalLogicCommandExample() 
   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 ApplyMathematicalLogicCommand = New ApplyMathematicalLogicCommand 
   command.Factor = 151 
   command.Flags = ApplyMathematicalLogicCommandFlags.OperationMultiply Or ApplyMathematicalLogicCommandFlags.ValueDoNothing Or ApplyMathematicalLogicCommandFlags.ResultDoNothing 
   ' Multiply the colors of the bitmap using a factor of 1.51 . 
   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 ApplyMathematicalLogicCommandExample() 
{ 
   // 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 
   ApplyMathematicalLogicCommand command = new ApplyMathematicalLogicCommand(); 
   command.Factor = 151; 
   command.Flags = ApplyMathematicalLogicCommandFlags.OperationMultiply |   ApplyMathematicalLogicCommandFlags.ValueDoNothing |   ApplyMathematicalLogicCommandFlags.ResultDoNothing; 
   // Multiply the colors of the bitmap using a factor of 1.51 . 
   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 ApplyMathematicalLogicCommandExample() 
{ 
   // 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 
   ApplyMathematicalLogicCommand command = new ApplyMathematicalLogicCommand(); 
   command.Factor = 151; 
   command.Flags = ApplyMathematicalLogicCommandFlags.OperationMultiply |   ApplyMathematicalLogicCommandFlags.ValueDoNothing |   ApplyMathematicalLogicCommandFlags.ResultDoNothing; 
   // Multiply the colors of the bitmap using a factor of 1.51 . 
   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 ApplyMathematicalLogicCommandExample(RasterImage image, Stream outStream) 
{ 
   // Prepare the command 
   ApplyMathematicalLogicCommand command = new ApplyMathematicalLogicCommand(); 
   command.Factor = 151; 
   command.Flags = ApplyMathematicalLogicCommandFlags.OperationMultiply |   ApplyMathematicalLogicCommandFlags.ValueDoNothing |   ApplyMathematicalLogicCommandFlags.ResultDoNothing; 
   // Multiply the colors of the bitmap using a factor of 1.51 . 
   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 ApplyMathematicalLogicCommandExample(ByVal image As RasterImage, ByVal outStream As Stream) 
   ' Prepare the command 
   Dim command As ApplyMathematicalLogicCommand = New ApplyMathematicalLogicCommand() 
   command.Factor = 151 
   command.Flags = ApplyMathematicalLogicCommandFlags.OperationMultiply Or ApplyMathematicalLogicCommandFlags.ValueDoNothing Or _ 
      ApplyMathematicalLogicCommandFlags.ResultDoNothing 
   ' Multiply the colors of the bitmap using a factor of 1.51 . 
   command.Run(image) 
   ' Save result image 
   Dim codecs As RasterCodecs = New RasterCodecs() 
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24) 
   image.Dispose() 
End Sub 

Requirements

Target Platforms

Products | Support | Contact Us | Copyright Notices
© 1991-2017 LEAD Technologies, Inc. All Rights Reserved.
Leadtools.ImageProcessing.Color Assembly
Click or drag to resize