Syntax

Visual Basic (Declaration)
<OperationContractAttribute("AutoCrop")> <FaultContractAttribute(DetailType=Leadtools.Services.Raster.FaultContracts.RasterFault, Action="", Name="", Namespace="", HasProtectionLevel=False)> Overridable Function AutoCrop( _ ByVal request As AutoCropRequest _ ) As CommandResponse

Visual Basic (Declaration)

<OperationContractAttribute("AutoCrop")>
<FaultContractAttribute(DetailType=Leadtools.Services.Raster.FaultContracts.RasterFault, 
   Action="", 
   Name="", 
   Namespace="", 
   HasProtectionLevel=False)>
Overridable Function AutoCrop( _
   ByVal request As AutoCropRequest _
) As CommandResponse

Visual Basic (Usage)	Copy Code
`Dim instance As IImageProcessingService Dim request As AutoCropRequest Dim value As CommandResponse value = instance.AutoCrop(request)`

C#
[OperationContractAttribute("AutoCrop")] [FaultContractAttribute(DetailType=Leadtools.Services.Raster.FaultContracts.RasterFault, Action="", Name="", Namespace="", HasProtectionLevel=false)] virtual CommandResponse AutoCrop( AutoCropRequest request )

[OperationContractAttribute("AutoCrop")]
[FaultContractAttribute(DetailType=Leadtools.Services.Raster.FaultContracts.RasterFault, 
   Action="", 
   Name="", 
   Namespace="", 
   HasProtectionLevel=false)]
virtual CommandResponse AutoCrop( 
   AutoCropRequest request
)

C++/CLI
[OperationContractAttribute("AutoCrop")] [FaultContractAttribute(DetailType=Leadtools.Services.Raster.FaultContracts.RasterFault, Action="", Name="", Namespace="", HasProtectionLevel=false)] virtual CommandResponse AutoCrop( AutoCropRequest request )

C++/CLI

[OperationContractAttribute("AutoCrop")]
[FaultContractAttribute(DetailType=Leadtools.Services.Raster.FaultContracts.RasterFault, 
   Action="", 
   Name="", 
   Namespace="", 
   HasProtectionLevel=false)]
virtual CommandResponse AutoCrop( 
   AutoCropRequest request
)

Parameters

request: A DataContractAttribute containing the data that will be used in this AutoCrop operation.

Return Value

A DataContractAttribute containing the modified image resulting from the AutoCrop operation.

Example

Visual Basic Copy Code

Visual Basic	Copy Code
Public Sub AutoCropExample() Dim client As ImageProcessingServiceClient = New ImageProcessingServiceClient() Dim sourceBinaryData As RawBinaryData = New RawBinaryData() sourceBinaryData.Data = File.ReadAllBytes(LeadtoolsExamples.Common.ImagesPath.Path & "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 AutoCropRequest = New AutoCropRequest() request.ConvertOptions = convertOptions request.RegionData = Nothing request.Threshold = 20 Dim response As CommandResponse = client.AutoCrop(request) If Not response.Destination Is Nothing Then If TypeOf response.Destination Is RawBinaryData Then File.WriteAllBytes(LeadtoolsExamples.Common.ImagesPath.Path & "AutoCrop.bmp", (TryCast(response.Destination, RawBinaryData)).Data) End If End If client.Close() End Sub

Public Sub AutoCropExample()

  Dim client As ImageProcessingServiceClient = New ImageProcessingServiceClient()

  Dim sourceBinaryData As RawBinaryData = New RawBinaryData()

  sourceBinaryData.Data = File.ReadAllBytes(LeadtoolsExamples.Common.ImagesPath.Path & "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 AutoCropRequest = New AutoCropRequest()



  request.ConvertOptions = convertOptions

  request.RegionData = Nothing

  request.Threshold = 20



  Dim response As CommandResponse = client.AutoCrop(request)

  If Not response.Destination Is Nothing Then

    If TypeOf response.Destination Is RawBinaryData Then

       File.WriteAllBytes(LeadtoolsExamples.Common.ImagesPath.Path & "AutoCrop.bmp", (TryCast(response.Destination, RawBinaryData)).Data)

    End If

  End If



  client.Close()

End Sub

C# Copy Code

C#	Copy Code
public void AutoCropExample() { ImageProcessingServiceClient client = new ImageProcessingServiceClient(); RawBinaryData sourceBinaryData = new RawBinaryData(); sourceBinaryData.Data = File.ReadAllBytes(LeadtoolsExamples.Common.ImagesPath.Path + "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; AutoCropRequest request = new AutoCropRequest(); request.ConvertOptions = convertOptions; request.RegionData = null; request.Threshold = 20; CommandResponse response = client.AutoCrop(request); if (response.Destination != null) { if (response.Destination is RawBinaryData) File.WriteAllBytes(LeadtoolsExamples.Common.ImagesPath.Path + "AutoCrop.bmp", (response.Destination as RawBinaryData).Data); } client.Close(); }

public void AutoCropExample() 
{ 
   ImageProcessingServiceClient client = new ImageProcessingServiceClient(); 
   RawBinaryData sourceBinaryData = new RawBinaryData(); 
   sourceBinaryData.Data = File.ReadAllBytes(LeadtoolsExamples.Common.ImagesPath.Path + "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; 
 
   AutoCropRequest request = new AutoCropRequest(); 
 
   request.ConvertOptions = convertOptions; 
   request.RegionData = null; 
   request.Threshold = 20; 
 
   CommandResponse response = client.AutoCrop(request); 
   if (response.Destination != null) 
   { 
      if (response.Destination is RawBinaryData) 
         File.WriteAllBytes(LeadtoolsExamples.Common.ImagesPath.Path + "AutoCrop.bmp", (response.Destination as RawBinaryData).Data); 
   } 
 
   client.Close(); 
}

Remarks

Generally, this operation is used for automatically trimming blank space from the edges of scanned documents.
Nevertheless, because this operation uses changes in intensity to detect blank space, it can trim edges of any color or intensity.
If a region is defined for the image, the region is also trimmed if necessary.
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 signed data images.
This operation does not support 32-bit grayscale images.

Requirements

Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family

Leadtools.Services.ImageProcessing.ServiceContracts	Requires Document/Medical product license \| Send comments on this topic. \| Back to Introduction - All Topics \| Help Version 16.5.9.25
AutoCrop Method
See Also Example