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

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BlankPageDetectorCommandクラス








メンバ 
imageが空白ページであるかどうか検出します。このコマンドはドキュメント/メディカルのツールキットで利用できます。
オブジェクトモデル
構文
'Declaration
 
Public Class BlankPageDetectorCommand 
   Inherits Leadtools.ImageProcessing.RasterCommand
   Implements Leadtools.ImageProcessing.IRasterCommand 
'Usage
 
Dim instance As BlankPageDetectorCommand
public sealed class BlankPageDetectorCommand : Leadtools.ImageProcessing.IRasterCommand  
@interface LTBlankPageDetectorCommand : LTRasterCommand
public class BlankPageDetectorCommand extends RasterCommand
function Leadtools.ImageProcessing.Core.BlankPageDetectorCommand()
public ref class BlankPageDetectorCommand : public Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand  
解説

LEADTOOLSのSilverlightバージョンにおいて、RasterImageオブジェクトのための画像データがSilverlight WriteableBitmapを用いて内部的に保存されるならば、この画像処理コマンドは失敗しますオブジェクト。詳細については、「Silverlightの画像処理コマンド限界」を参照してください。

サンプル

imageの上でBlankPageDetectorCommandを実行して、それが空白かどうか決定します。

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

   
Public Sub BlankPageDetectorCommandExample()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Clean.tif"))

   ' Prepare the command
   Dim command As BlankPageDetectorCommand = New BlankPageDetectorCommand
     'Determine whether the image is blank.
   command.Flags = BlankPageDetectorCommandFlags.DetectNoisyPage

   command.Run(leadImage)
   MessageBox.Show(" Is Blank   : " & command.IsBlank & "\n Accuracy : " & (command.Accuracy * 1.0 / 100) & "%", "Blank Page Detection Results")


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 BlankPageDetectorCommandExample()
{
   // Load an image
   RasterCodecs codecs = new RasterCodecs();
   codecs.ThrowExceptionsOnInvalidImages = true;
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Clean.tif"));

   // Prepare the command
   BlankPageDetectorCommand command = new BlankPageDetectorCommand();
   //Determine whether the image is a blank page
   command.Flags = BlankPageDetectorCommandFlags.DetectNoisyPage;
   command.Run(image);

   MessageBox.Show(" Is Blank   : " + command.IsBlank + "\n Accuracy : " + (command.Accuracy * 1.0 / 100) + "%", "Blank Page Detection Results");

}

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

   // Load the image
   var srcFileName = "Assets\\Clean.tif";
   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 command = new BlankPageDetectorCommand();
         //Determine whether the image is a blank page
         command.flags = BlankPageDetectorCommandFlags.detectNoisyPage;
         command.run(image);

         console.error(" Is Blank   : " + command.isBlank + "\n Accuracy : " + (command.accuracy * 1.0 / 100) + "% ", "Blank Page Detection Results");
      }
   });
}
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Core;

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

   // Prepare the command
   BlankPageDetectorCommand command = new BlankPageDetectorCommand();
   //Determine whether the image is a blank page
   command.Flags = BlankPageDetectorCommandFlags.DetectNoisyPage;
   command.Run(image);

   Debug.WriteLine(" Is Blank   : " + command.IsBlank + "\n Accuracy : " + (command.Accuracy * 1.0 / 100) + "%", "Blank Page Detection Results");

}
using Leadtools;
using Leadtools.Examples;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Core;

public void BlankPageDetectorCommandExample(RasterImage image)
{
   // Prepare the command
   BlankPageDetectorCommand command = new BlankPageDetectorCommand();
   //Determine whether the image is a blank page
   command.Flags = BlankPageDetectorCommandFlags.DetectNoisyPage;
   command.Run(image);
   Debug.WriteLine(" Is Blank   : " + command.IsBlank + "\n Accuracy : " + (command.Accuracy * 1.0 / 100) + "%", "Blank Page Detection Results", MessageBoxButton.OK);

   image.Dispose();
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Core

Public Sub BlankPageDetectorCommandExample(ByVal image As RasterImage)
   ' Prepare the command
   Dim command As BlankPageDetectorCommand = New BlankPageDetectorCommand()
   'Determine whether the image is a blank page
   command.Flags = BlankPageDetectorCommandFlags.DetectNoisyPage
   command.Run(image)
   Debug.WriteLine(" Is Blank   : " & command.IsBlank + Constants.vbLf & " Accuracy : " & (command.Accuracy * 1.0 / 100) & "%", _
                   "Blank Page Detection Results", MessageBoxButton.OK)

   image.Dispose()
End Sub
必要条件

ターゲットプラットホーム

参照

参照

BlankPageDetectorCommandメンバ
Leadtools.ImageProcessing.Core名前空間
LEADTOOLSによる画像処理入門
DeskewCommandクラス
DespeckleCommandクラス
LineRemoveCommandクラス
AutoCropCommandクラス