WatershedCommand Class

C#
Visual Basic
WinRT C#
Java
Objective-C
WinRT JavaScript
C++

public class WatershedCommand : Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand

'Declaration

Public Class WatershedCommand 
   Inherits Leadtools.ImageProcessing.RasterCommand
   Implements Leadtools.ImageProcessing.IRasterCommand

'Usage

Dim instance As WatershedCommand

public sealed class WatershedCommand : Leadtools.ImageProcessing.IRasterCommand

@interface LTWatershedCommand : LTRasterCommand

public class WatershedCommand extends RasterCommand

function Leadtools.ImageProcessing.Core.WatershedCommand()

public ref class WatershedCommand : public Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand

Each segment's pixels has the same color. The Watershed algorithm treats an image as if it were a topographic surface. The dark areas are basins. The light areas are the ridges around the basins.
The user is responsible for determining the number of output segments and the location of each segment in the input array.
This command supports 8, 16-bit grayscale and colored images and 24, 32-bit colored images.
This command does not support 32-bit grayscale images.
This command supports signed/unsigned images.

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

Copy Code

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Core

      
Public Sub WatershedCommandExample()
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True
   'Load an image
   Dim image As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE3.dcm"))

   Dim pointsArray As LeadPoint()() = New LeadPoint(3)() {}

   For idx As Integer = 0 To 3
      pointsArray(idx) = New LeadPoint(1) {}
   Next idx

   ' Set starting point and end point for each segment path.
   pointsArray(0)(0) = New LeadPoint(35, 100)
   pointsArray(0)(1) = New LeadPoint(35, 200)

   pointsArray(1)(0) = New LeadPoint(180, 115)
   pointsArray(1)(1) = New LeadPoint(300, 115)

   pointsArray(2)(0) = New LeadPoint(235, 220)
   pointsArray(2)(1) = New LeadPoint(260, 220)

   pointsArray(3)(0) = New LeadPoint(180, 330)
   pointsArray(3)(1) = New LeadPoint(350, 330)

   'Prepare the command
   Dim command As WatershedCommand = New WatershedCommand(pointsArray)

   'Apply 
   command.Run(image)
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;

      
public void WatershedCommandExample()
{
    RasterCodecs codecs = new RasterCodecs();
    codecs.ThrowExceptionsOnInvalidImages = true;
    //Load an image
    RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE3.dcm"));

    LeadPoint[][] pointsArray = new LeadPoint[4][];

    for (int idx = 0; idx < 4; idx++)
        pointsArray[idx] = new LeadPoint[2];

    // Set starting point and end point for each segment path.
    pointsArray[0][0] = new LeadPoint(35, 100);
    pointsArray[0][1] = new LeadPoint(35, 200);

    pointsArray[1][0] = new LeadPoint(180, 115);
    pointsArray[1][1] = new LeadPoint(300, 115);

    pointsArray[2][0] = new LeadPoint(235, 220);
    pointsArray[2][1] = new LeadPoint(260, 220);

    pointsArray[3][0] = new LeadPoint(180, 330);
    pointsArray[3][1] = new LeadPoint(350, 330);

    //Prepare the command
    WatershedCommand command = new WatershedCommand(pointsArray);

    //Apply 
    command.Run(image);
}

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

Target Platforms

Reference

WatershedCommand Members
Leadtools.ImageProcessing.Core Namespace
OtsuThresholdCommand Class
LambdaConnectednessCommand Class
ShrinkWrapCommand Class
GWireCommand Class
LevelsetCommand Class