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ImageRegion Property (BorderRemoveCommand)

Summary

RasterImage object that is updated with a shallow copy of image that also has a region that contains the removed borders.

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

If BorderRemoveCommandFlags.SingleRegion| BorderRemoveCommandFlags.LeadRegion have been set in Flags, then when BorderRemoveCommand returns, this is updated with a shallow copy of image that also has a region that contains the removed borders. So set Flags to (BorderRemoveCommandFlags.SingleRegion| BorderRemoveCommandFlags.LeadRegion). It is the programmer's responsibility to dispose the region when it is no longer needed.

Example

Run the BorderRemoveCommand on an image.

WinRT C#

Silverlight C#

Silverlight VB

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Core 
Imports Leadtools.ImageProcessing.Color 
 
    
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 
   Dim command As BorderRemoveCommand = New BorderRemoveCommand 
   command.Border = BorderRemoveBorderFlags.All 
   command.Flags = BorderRemoveCommandFlags.UseVariance Or BorderRemoveCommandFlags.SingleRegion Or BorderRemoveCommandFlags.LeadRegion 
   command.Percent = 20 
   command.Variance = 3 
   command.WhiteNoiseLength = 9 
 
   command.Run(leadImage) 
 
   Using tempRegion As RasterRegion = command.ImageRegion.GetRegion(Nothing) 
      leadImage.SetRegion(Nothing, tempRegion, RasterRegionCombineMode.Set) 
   End Using 
 
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; 
using Leadtools.ImageProcessing.Color; 
 
       
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 
   BorderRemoveCommand command = new BorderRemoveCommand(); 
   command.Border = BorderRemoveBorderFlags.All; 
   command.Flags = BorderRemoveCommandFlags.UseVariance |   BorderRemoveCommandFlags.SingleRegion |   BorderRemoveCommandFlags.LeadRegion; 
   command.Percent = 20; 
   command.Variance = 3; 
   command.WhiteNoiseLength = 9; 
 
   command.Run(image); 
 
   using(RasterRegion tempRegion = command.ImageRegion.GetRegion(null)) 
   { 
      image.SetRegion(null, tempRegion, RasterRegionCombineMode.Set); 
   } 
 
} 
 
static class LEAD_VARS 
{ 
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
}

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
using Leadtools.ImageProcessing.Color; 
 
       
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 
   BorderRemoveCommand command = new BorderRemoveCommand(); 
   command.Border = BorderRemoveBorderFlags.All; 
   command.Flags = BorderRemoveCommandFlags.UseVariance |   BorderRemoveCommandFlags.SingleRegion |   BorderRemoveCommandFlags.LeadRegion; 
   command.Percent = 20; 
   command.Variance = 3; 
   command.WhiteNoiseLength = 9; 
 
   command.Run(image); 
 
   using(RasterRegion tempRegion = command.ImageRegion.GetRegion(null)) 
   { 
      image.SetRegion(null, tempRegion, RasterRegionCombineMode.Set); 
   } 
 
}

using Leadtools; 
using Leadtools.Examples; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void ImageRegionPropertyExample(RasterImage image, Stream outStream) 
{ 
   // Prepare the command 
   BorderRemoveCommand command = new BorderRemoveCommand(); 
   command.Border = BorderRemoveBorderFlags.All; 
   command.Flags = BorderRemoveCommandFlags.UseVariance |   BorderRemoveCommandFlags.SingleRegion |   BorderRemoveCommandFlags.LeadRegion; 
   command.Percent = 20; 
   command.Variance = 3; 
   command.WhiteNoiseLength = 9; 
   command.Run(image); 
 
   // Save result image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.Save(image, outStream, RasterImageFormat.CcittGroup4, 1); 
   image.Dispose(); 
}

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 BorderRemoveCommand = New BorderRemoveCommand() 
   command.Border = BorderRemoveBorderFlags.All 
   command.Flags = BorderRemoveCommandFlags.UseVariance Or BorderRemoveCommandFlags.SingleRegion Or BorderRemoveCommandFlags.LeadRegion 
   command.Percent = 20 
   command.Variance = 3 
   command.WhiteNoiseLength = 9 
   command.Run(image) 
 
   ' Save result image 
   Dim codecs As RasterCodecs = New RasterCodecs() 
   codecs.Save(image, outStream, RasterImageFormat.CcittGroup4, 1) 
   image.Dispose() 
End Sub