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ImageRegion Property (InvertedTextCommand)

Summary

This property is updated with a shallow copy of the image that also has a region that contains the removed inverted text.

Syntax

Java

Objective-C

WinRT C#

C++

public Leadtools.RasterImage ImageRegion {get;}

Public ReadOnly Property ImageRegion As Leadtools.RasterImage

public Leadtools.RasterImage ImageRegion {get;}

@property (nonatomic, strong, readonly, nullable) LTRasterImage *imageRegion

public RasterImage getImageRegion()

get_ImageRegion();

public: 
property Leadtools.RasterImage^ ImageRegion { 
   Leadtools.RasterImage^ get(); 
}

Property Value

A shallow copy of the image that also has a region that contains the removed inverted text.

Remarks

If InvertedTextCommandFlags.SingleRegion| InvertedTextCommandFlags.LeadRegion has been set in the Flags property, then when InvertedTextCommand returns, this property is updated with a shallow copy of the image that also has a region that contains the removed inverted text. So set the InvertedTextCommandFlags.SingleRegion| InvertedTextCommandFlags.LeadRegion flags. Dispose of the region when it is no longer needed.

Example

Run the InvertedTextCommand on an image.

WinRT C#

Silverlight C#

Silverlight VB

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Core 
 
Public WithEvents invertedTextCommand_S3 As InvertedTextCommand 
    
Public Sub ImageRegionPropertyExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Clean.tif")) 
 
   ' Prepare the command 
   invertedTextCommand_S3 = New InvertedTextCommand 
   invertedTextCommand_S3.Flags = InvertedTextCommandFlags.UseDpi Or InvertedTextCommandFlags.LeadRegion Or InvertedTextCommandFlags.SingleRegion 
   invertedTextCommand_S3.MaximumBlackPercent = 95 
   invertedTextCommand_S3.MinimumBlackPercent = 70 
   invertedTextCommand_S3.MinimumInvertHeight = 500 
   invertedTextCommand_S3.MinimumInvertWidth = 5000 
   invertedTextCommand_S3.Run(leadImage) 
 
End Sub 
 
Private Sub InvertedTextCommand_InvertedText_S3(ByVal sender As Object, ByVal e As InvertedTextCommandEventArgs) Handles invertedTextCommand_S3.InvertedText 
   MessageBox.Show("Size " + "( " + e.BoundingRectangle.Left.ToString() + ", " + e.BoundingRectangle.Top.ToString() + ") - " + "( " + e.BoundingRectangle.Right.ToString() + ", " + e.BoundingRectangle.Bottom.ToString() + ")" + _ 
      Chr(13) + " Black Count " + e.BlackCount.ToString() + _ 
      Chr(13) + " White Count " + e.WhiteCount.ToString()) 
   e.Status = RemoveStatus.Remove 
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 ImageRegionPropertyExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Clean.tif")); 
 
   // Prepare the command 
   InvertedTextCommand command = new InvertedTextCommand(); 
   command.InvertedText += new EventHandler<InvertedTextCommandEventArgs>(InvertedTextEvent_S3); 
   command.Flags = InvertedTextCommandFlags.UseDpi |   InvertedTextCommandFlags.SingleRegion |   InvertedTextCommandFlags.LeadRegion; 
   command.MaximumBlackPercent = 95; 
   command.MinimumBlackPercent = 70; 
   command.MinimumInvertHeight = 500; 
   command.MinimumInvertWidth  = 5000; 
   command.Run(image); 
 
} 
 
private void InvertedTextEvent_S3(object sender, InvertedTextCommandEventArgs e) 
{ 
   MessageBox.Show("Size "           + "( " + e.BoundingRectangle.Left + ", " + e.BoundingRectangle.Top + ") - " + "( " + e.BoundingRectangle.Right + ", " + e.BoundingRectangle.Bottom + ")" + 
      "\n Black Count " + e.BlackCount.ToString() +  
      "\n White Count " + e.WhiteCount.ToString()); 
   e.Status = RemoveStatus.Remove; 
} 
 
static class LEAD_VARS 
{ 
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
}

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
       
public async Task ImageRegionPropertyExample() 
{ 
   // 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 
   InvertedTextCommand command = new InvertedTextCommand(); 
   command.InvertedText += new EventHandler<InvertedTextCommandEventArgs>(InvertedTextEvent_S3); 
   command.Flags = InvertedTextCommandFlags.UseDpi |   InvertedTextCommandFlags.SingleRegion |   InvertedTextCommandFlags.LeadRegion; 
   command.MaximumBlackPercent = 95; 
   command.MinimumBlackPercent = 70; 
   command.MinimumInvertHeight = 500; 
   command.MinimumInvertWidth  = 5000; 
   command.Run(image); 
 
} 
 
private void InvertedTextEvent_S3(object sender, InvertedTextCommandEventArgs e) 
{ 
   Debug.WriteLine("Size "           + "( " + e.BoundingRectangle.X + ", " + e.BoundingRectangle.Y + ") - " + "( " + e.BoundingRectangle.Width + ", " + e.BoundingRectangle.Height + ")" + 
      "\n Black Count " + e.BlackCount.ToString() +  
      "\n White Count " + e.WhiteCount.ToString()); 
   e.Status = RemoveStatus.Remove; 
}

using Leadtools; 
using Leadtools.Examples; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void ImageRegionPropertyExample(RasterImage image, Stream outStream) 
{ 
   // Prepare the command 
   InvertedTextCommand command = new InvertedTextCommand(); 
   command.InvertedText += new EventHandler<InvertedTextCommandEventArgs>(InvertedTextEvent_S3); 
   command.Flags = InvertedTextCommandFlags.UseDpi |   InvertedTextCommandFlags.SingleRegion |   InvertedTextCommandFlags.LeadRegion; 
   command.MaximumBlackPercent = 95; 
   command.MinimumBlackPercent = 70; 
   command.MinimumInvertHeight = 500; 
   command.MinimumInvertWidth  = 5000; 
   command.Run(image); 
   // Save result image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.Save(image, outStream, RasterImageFormat.CcittGroup4, 1); 
   image.Dispose(); 
} 
 
private void InvertedTextEvent_S3(object sender, InvertedTextCommandEventArgs e) 
{ 
   Debug.WriteLine("Size "           + "( " + e.BoundingRectangle.Left + ", " + e.BoundingRectangle.Top + ") - " + "( " + e.BoundingRectangle.Right + ", " + e.BoundingRectangle.Bottom + ")" + 
      "\n Black Count " + e.BlackCount.ToString() +  
      "\n White Count " + e.WhiteCount.ToString()); 
   e.Status = RemoveStatus.Remove; 
}

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Core 
 
Public Sub ImageRegionPropertyExample(ByVal image As RasterImage, ByVal outStream As Stream) 
   ' Prepare the command 
   Dim command As InvertedTextCommand = New InvertedTextCommand() 
   AddHandler command.InvertedText, AddressOf InvertedTextEvent_S3 
   command.Flags = InvertedTextCommandFlags.UseDpi Or InvertedTextCommandFlags.SingleRegion Or InvertedTextCommandFlags.LeadRegion 
   command.MaximumBlackPercent = 95 
   command.MinimumBlackPercent = 70 
   command.MinimumInvertHeight = 500 
   command.MinimumInvertWidth = 5000 
   command.Run(image) 
   ' Save result image 
   Dim codecs As RasterCodecs = New RasterCodecs() 
   codecs.Save(image, outStream, RasterImageFormat.CcittGroup4, 1) 
   image.Dispose() 
End Sub 
 
Private Sub InvertedTextEvent_S3(ByVal sender As Object, ByVal e As InvertedTextCommandEventArgs) 
   Debug.WriteLine("Size " & "( " & e.BoundingRectangle.Left & ", " & e.BoundingRectangle.Top & ") - " & "( " & e.BoundingRectangle.Right & ", " _ 
                   & e.BoundingRectangle.Bottom & ")" & Constants.vbLf & " Black Count " & e.BlackCount.ToString() & Constants.vbLf & " White Count " _ 
                   & e.WhiteCount.ToString()) 
   e.Status = RemoveStatus.Remove 
End Sub