Leadtools.ImageProcessing.Effects Send comments on this topic. | Back to Introduction - All Topics | Help Version 16.5.9.25
ContourFilterCommand Constructor(Int32,Int32,Int32,ContourFilterCommandType)
See Also  Example
Leadtools.ImageProcessing.Effects Namespace > ContourFilterCommand Class > ContourFilterCommand Constructor : ContourFilterCommand Constructor(Int32,Int32,Int32,ContourFilterCommandType)



threshold
Threshold of the gradient magnitude. Values below this will be considered as background, and will be set to 0. Values can be from 1 to 254. A lower threshold provides a better quality image. Default is 15.
deltaDirection
Maximum angle for the thinning algorithm. Values can be from 1 to 64. Default is 35.
maximumError
Maximum error for approximation algorithm. Values can be from 0 to 255. Default is 5. This parameter is only valid if the type parameter is set to ApproxColor.
type
Flag that controls the resulting image. This value tells the command what process to complete before returning.
Initializes a new ContourFilterCommand class object with explicit parameters.

Syntax

Visual Basic (Declaration) 
Public Function New( _
   ByVal threshold As Integer, _
   ByVal deltaDirection As Integer, _
   ByVal maximumError As Integer, _
   ByVal type As ContourFilterCommandType _
)
Visual Basic (Usage)Copy Code
Dim threshold As Integer
Dim deltaDirection As Integer
Dim maximumError As Integer
Dim type As ContourFilterCommandType
 
Dim instance As ContourFilterCommand(threshold, deltaDirection, maximumError, type)
C# 
public ContourFilterCommand( 
   int threshold,
   int deltaDirection,
   int maximumError,
   ContourFilterCommandType type
)
C++/CLI 
public:
ContourFilterCommand( 
   int threshold,
   int deltaDirection,
   int maximumError,
   ContourFilterCommandType type
)

Parameters

threshold
Threshold of the gradient magnitude. Values below this will be considered as background, and will be set to 0. Values can be from 1 to 254. A lower threshold provides a better quality image. Default is 15.
deltaDirection
Maximum angle for the thinning algorithm. Values can be from 1 to 64. Default is 35.
maximumError
Maximum error for approximation algorithm. Values can be from 0 to 255. Default is 5. This parameter is only valid if the type parameter is set to ApproxColor.
type
Flag that controls the resulting image. This value tells the command what process to complete before returning.

Example

Run the ContourFilterCommand on an image with LinkColor Option.

Visual BasicCopy Code
Public Sub ContourFilterConstructorExample()
   RasterCodecs.Startup()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True

   Dim leadImage As RasterImage = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Master.jpg")

   ' Prepare the command
   Dim command As ContourFilterCommand
   command = New ContourFilterCommand(15, 35, 5, ContourFilterCommandType.LinkColor)
   command.Run(leadImage)
   codecs.Save(leadImage, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24)

   RasterCodecs.Shutdown()
End Sub
C#Copy Code
public void ContourFilterConstructorExample() 
{ 
   // Load an image 
   RasterCodecs.Startup(); 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Beauty16.jpg", 16, CodecsLoadByteOrder.BgrOrGray, 1, 1); 
 
   // Prepare the command 
   ContourFilterCommand command = new ContourFilterCommand(15, 35, 5, ContourFilterCommandType.LinkColor); 
   command.Run(image); 
   codecs.Save(image, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24); 
 
   RasterCodecs.Shutdown(); 
}

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also