UnsharpMask Method

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

[FaultContractAttribute(DetailType=Leadtools.Services.Raster.FaultContracts.RasterFault, 
   Action="", 
   Name="", 
   Namespace="", 
   ProtectionLevel=ProtectionLevel.None, 
   HasProtectionLevel=false)]
[OperationContractAttribute("UnsharpMask")]
CommandResponse UnsharpMask( 
   UnsharpMaskRequest request
)

'Declaration
 
<FaultContractAttribute(DetailType=Leadtools.Services.Raster.FaultContracts.RasterFault, 
   Action="", 
   Name="", 
   Namespace="", 
   ProtectionLevel=ProtectionLevel.None, 
   HasProtectionLevel=False)>
<OperationContractAttribute("UnsharpMask")>
Function UnsharpMask( _
   ByVal request As UnsharpMaskRequest _
) As CommandResponse

'Usage
 
Dim instance As IEffectsProcessingService
Dim request As UnsharpMaskRequest
Dim value As CommandResponse
 
value = instance.UnsharpMask(request)

[FaultContractAttribute(DetailType=Leadtools.Services.Raster.FaultContracts.RasterFault, 
   Action="", 
   Name="", 
   Namespace="", 
   ProtectionLevel=ProtectionLevel.None, 
   HasProtectionLevel=false)]
[OperationContractAttribute("UnsharpMask")]
CommandResponse UnsharpMask( 
   UnsharpMaskRequest request
)

FaultContractAttribute(DetailType=Leadtools.Services.Raster.FaultContracts.RasterFault, 
   Action="", 
   Name="", 
   Namespace="", 
   ProtectionLevel=ProtectionLevel.None, 
   HasProtectionLevel=)
OperationContractAttribute("UnsharpMask")
function Leadtools.Services.ImageProcessing.ServiceContracts.IEffectsProcessingService.UnsharpMask( 
   request 
)

[FaultContractAttribute(DetailType=Leadtools.Services.Raster.FaultContracts.RasterFault, 
   Action="", 
   Name="", 
   Namespace="", 
   ProtectionLevel=ProtectionLevel.None, 
   HasProtectionLevel=false)]
[OperationContractAttribute("UnsharpMask")]
CommandResponse^ UnsharpMask( 
   UnsharpMaskRequest^ request
)

Parameters

request: A System.Runtime.Serialization.DataContractAttribute containing the data that will be used in this UnsharpMask operation.

Return Value

A System.Runtime.Serialization.DataContractAttribute containing the modified image resulting from the UnsharpMask operation.

This operation is actually considered a sharpening method. It is used to sharpen the image with a minimum of noise. To reduce the noise, it starts by blurring a copy of the original image. The amount of blur depends on Radius. The operation then determines the difference between each pixel's value of the original image and the corresponding pixel's value in the blurred image. If the difference is greater than the threshold value, then the difference between the pixel values is multiplied by the amount value and added to the original pixel value.
To increase the thickness of the sharpened edges, increase the radius value.
To increase the amount of sharpness, increase the amount value.
To reduce the noise and eliminate the small edges or individual pixels that will produce noise in image, increase the threshold value.
Using the Yuv color space decreases the processing time.
This operation 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 operation does not support 32-bit grayscale images.

For more information, refer to Detecting and Enhancing Edges and Lines.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Public Sub UnsharpMaskExample()
      Dim client As EffectsProcessingServiceClient = New EffectsProcessingServiceClient()
      Dim sourceBinaryData As RawBinaryData = New RawBinaryData()
      sourceBinaryData.Data = File.ReadAllBytes(Path.Combine(LEAD_VARS.ImagesDir, "image1.cmp"))

      Dim convertOptions As RasterConvertOptions = New RasterConvertOptions()

      convertOptions.Source = sourceBinaryData
      convertOptions.Destination = Nothing
      convertOptions.Format = RasterImageFormat.Bmp
      convertOptions.FirstPage = 1
      convertOptions.LastPage = 1
      convertOptions.BitsPerPixel = 24
      convertOptions.QualityFactor = 2

      Dim request As UnsharpMaskRequest = New UnsharpMaskRequest()
      request.ConvertOptions = convertOptions
      request.RegionData = Nothing
      request.Amount = 200
      request.Radius = 15
      request.Threshold = 50
      request.ColorType = UnsharpMaskCommandColorType.Rgb

      Dim response As CommandResponse = client.UnsharpMask(request)
      If Not response.Destination Is Nothing Then
         If TypeOf response.Destination Is RawBinaryData Then
            File.WriteAllBytes(Path.Combine(LEAD_VARS.ImagesDir, "UnsharpMask.bmp"), (TryCast(response.Destination, RawBinaryData)).Data)
         End If
      End If

      client.Close()
   End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class

public void UnsharpMaskExample()
   {
      EffectsProcessingServiceClient client = new EffectsProcessingServiceClient();
      RawBinaryData sourceBinaryData = new RawBinaryData();
      sourceBinaryData.Data = File.ReadAllBytes(Path.Combine(LEAD_VARS.ImagesDir,"image1.cmp"));

      RasterConvertOptions convertOptions = new RasterConvertOptions();

      convertOptions.Source = sourceBinaryData;
      convertOptions.Destination = null;
      convertOptions.Format = RasterImageFormat.Bmp;
      convertOptions.FirstPage = 1;
      convertOptions.LastPage = 1;
      convertOptions.BitsPerPixel = 24;
      convertOptions.QualityFactor = 2;

      UnsharpMaskRequest request = new UnsharpMaskRequest();
      request.ConvertOptions = convertOptions;
      request.RegionData = null;
      request.Amount = 200;
      request.Radius = 15;
      request.Threshold = 50;
      request.ColorType = UnsharpMaskCommandColorType.Rgb;

      CommandResponse response = client.UnsharpMask(request);
      if(response.Destination != null)
      {
         if(response.Destination is RawBinaryData)
            File.WriteAllBytes(Path.Combine(LEAD_VARS.ImagesDir,"UnsharpMask.bmp"), (response.Destination as RawBinaryData).Data);
      }

      client.Close();
   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

IEffectsProcessingService Interface
IEffectsProcessingService Members