UnsharpMask Method

Visual Basic
C#
Objective-C
Java
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
)

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

Copy Code

Imports Leadtools.Services
Imports Leadtools.Services.datacontracts._2009._01
Imports Leadtools.Services.raster.datacontracts._2009._01
Imports Leadtools.Services.ImageProcessing.datacontracts._2009._01

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

using Leadtools.Services;
using leadtools.services.datacontracts._2009._01;
using leadtools.services.raster.datacontracts._2009._01;
using leadtools.services.imageprocessing.datacontracts._2009._01;

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

Reference

IEffectsProcessingService Interface
IEffectsProcessingService Members