LEADTOOLS画像処理(Leadtools.ImageProcessing.Coreアセンブリ)

フレームを表示

FourierTransformDisplayCommandクラス








メンバ 
このコマンドは、imageとして高速フーリエ変換または別々のフーリエ解析の結果を示すのに用いられます。
オブジェクトモデル
構文
'Declaration
 
Public Class FourierTransformDisplayCommand 
   Inherits Leadtools.ImageProcessing.RasterCommand
   Implements Leadtools.ImageProcessing.IRasterCommand 
'Usage
 
Dim instance As FourierTransformDisplayCommand
public sealed class FourierTransformDisplayCommand : Leadtools.ImageProcessing.IRasterCommand  
@interface LTFourierTransformDisplayCommand : LTRasterCommand
function Leadtools.ImageProcessing.Core.FourierTransformDisplayCommand()
public ref class FourierTransformDisplayCommand : public Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand  
解説

このコマンドは、Imaging Pro以上のツールキットで利用できます。

詳細については、「除去ノイズ」を参照してください。
サンプル

imageの上のFourierTransformDisplayCommandを実行して、それへの離散的フーリエ変換コマンドを適用して、そして、データを示します。

Copy Code  
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Core

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

   ' Prepare the command
   Dim FTArray As FourierTransformInformation = New FourierTransformInformation(leadImage)
   Dim rcRange As LeadRect = New LeadRect(0, 0, leadImage.Width - 1, leadImage.Height - 1)
   Dim DFTcommand As DiscreteFourierTransformCommand = New DiscreteFourierTransformCommand
   Dim command As FourierTransformDisplayCommand = New FourierTransformDisplayCommand

   DFTcommand.FourierTransformInformation = FTArray
   DFTcommand.Range = rcRange
   DFTcommand.Flags = DiscreteFourierTransformCommandFlags.DiscreteFourierTransform _
   Or DiscreteFourierTransformCommandFlags.Gray _
   Or DiscreteFourierTransformCommandFlags.Range _
   Or DiscreteFourierTransformCommandFlags.InsideX _
   Or DiscreteFourierTransformCommandFlags.OutsideY
   ' apply DFT
   DFTcommand.Run(leadImage)

   command.Flags = FourierTransformDisplayCommandFlags.Log Or FourierTransformDisplayCommandFlags.Magnitude
   command.FourierTransformInformation = FTArray
   'plot frequency magnitude
   command.Run(leadImage)

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.Core;

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

   // Prepare the command
   FourierTransformInformation FTArray = new FourierTransformInformation(image);
   LeadRect rcRange = new LeadRect(0, 0, image.Width - 1, image.Height - 1);
   DiscreteFourierTransformCommand DFTcommand = new DiscreteFourierTransformCommand();
   FourierTransformDisplayCommand  command = new FourierTransformDisplayCommand();

   DFTcommand.FourierTransformInformation = FTArray;
   DFTcommand.Range = rcRange;
   DFTcommand.Flags = DiscreteFourierTransformCommandFlags.DiscreteFourierTransform | 
      DiscreteFourierTransformCommandFlags.Gray    | 
      DiscreteFourierTransformCommandFlags.Range   | 
      DiscreteFourierTransformCommandFlags.InsideX | 
      DiscreteFourierTransformCommandFlags.InsideY; 
   // apply DFT
   DFTcommand.Run(image);

   command.Flags = FourierTransformDisplayCommandFlags.Log | FourierTransformDisplayCommandFlags.Magnitude;
   command.FourierTransformInformation = FTArray;
   //plot frequency magnitude.
   command.Run(image);

}

static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
function FourierTransformDisplayCommandExample()
{
   var codecs = new Leadtools.Codecs.RasterCodecs();
   codecs.throwExceptionsOnInvalidImages = true;

   // Load the image
   var srcFileName = "Assets\\Image1.cmp";
   return Tools.AppInstallFolder().getFileAsync(srcFileName).then(function (loadFile) {
      return codecs.loadAsync(Leadtools.LeadStreamFactory.create(loadFile));
   }).then(function (image) {
      // Prepare the command
      with (Leadtools.ImageProcessing.Core) {
         var FTArray = new FourierTransformInformation(image);
         var rcRange = Leadtools.LeadRectHelper.create(0, 0, image.width - 1, image.height - 1);
         var DFTcommand = new DiscreteFourierTransformCommand();
         var command = new FourierTransformDisplayCommand();
         
         DFTcommand.fourierTransformInformation = FTArray;
         DFTcommand.range = rcRange;
         DFTcommand.flags = DiscreteFourierTransformCommandFlags.discreteFourierTransform | 
            DiscreteFourierTransformCommandFlags.gray    | 
            DiscreteFourierTransformCommandFlags.range   | 
            DiscreteFourierTransformCommandFlags.insideX | 
            DiscreteFourierTransformCommandFlags.insideY; 
         // apply DFT
         DFTcommand.run(image);
         
         command.flags = FourierTransformDisplayCommandFlags.log | FourierTransformDisplayCommandFlags.magnitude;
         command.fourierTransformInformation = FTArray;
         //plot frequency magnitude.
         command.run(image);
      }
   });
}
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Core;

      
public async Task FourierTransformDisplayCommandExample()
{
   // 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
   FourierTransformInformation FTArray = new FourierTransformInformation(image);
   LeadRect rcRange = LeadRectHelper.Create(0, 0, image.Width - 1, image.Height - 1);
   DiscreteFourierTransformCommand DFTcommand = new DiscreteFourierTransformCommand();
   FourierTransformDisplayCommand  command = new FourierTransformDisplayCommand();

   DFTcommand.FourierTransformInformation = FTArray;
   DFTcommand.Range = rcRange;
   DFTcommand.Flags = DiscreteFourierTransformCommandFlags.DiscreteFourierTransform | 
      DiscreteFourierTransformCommandFlags.Gray    | 
      DiscreteFourierTransformCommandFlags.Range   | 
      DiscreteFourierTransformCommandFlags.InsideX | 
      DiscreteFourierTransformCommandFlags.InsideY; 
   // apply DFT
   DFTcommand.Run(image);

   command.Flags = FourierTransformDisplayCommandFlags.Log | FourierTransformDisplayCommandFlags.Magnitude;
   command.FourierTransformInformation = FTArray;
   //plot frequency magnitude.
   command.Run(image);

}
必要条件

ターゲットプラットホーム

参照

参照

FourierTransformDisplayCommandメンバ
Leadtools.ImageProcessing.Core名前空間
ノイズを削除すること
DiscreteFourierTransformCommandクラス
FrequencyFilterCommandクラス
Leadtools.ImageProcessing.Effects.AverageCommand
MedianCommandクラス
Leadtools.ImageProcessing.Effects.SpatialFilterCommand
Leadtools.ImageProcessing.Effects.BinaryFilterCommand
MinimumCommandクラス
Leadtools.ImageProcessing.Effects.AddNoiseCommand
Leadtools.ImageProcessing.Color.IntensityDetectCommand
MaximumCommandクラス
Leadtools.ImageProcessing.Color.ChangeHueSaturationIntensityCommand
Leadtools.ImageProcessing.Color.ColorThresholdCommand
Leadtools.ImageProcessing.Effects.DirectionEdgeStatisticalCommand
FastFourierTransformCommandクラス
FourierTransformDisplayCommandクラス
Leadtools.ImageProcessing.Effects.StatisticsInformationCommand
Leadtools.ImageProcessing.Effects.FeretsDiameterCommand
Leadtools.ImageProcessing.Effects.ObjectInformationCommand
Leadtools.ImageProcessing.Effects.RegionContourPointsCommand
Leadtools.ImageProcessing.Color.MathematicalFunctionCommand
Leadtools.ImageProcessing.SpecialEffects.RevEffectCommand
Leadtools.ImageProcessing.Color.SegmentCommand
SubtractBackgroundCommandクラス
Leadtools.ImageProcessing.Effects.UserFilterCommand
Leadtools.ImageProcessing.SpecialEffects.FragmentCommand
Leadtools.ImageProcessing.Effects.HighPassCommand
Leadtools.ImageProcessing.Effects.UnsharpMaskCommand