Compares the images in a list with all the areas of the same dimensions in an image and finds those portions that match according to the measure of correlation. This method is only available in the Document/Medical toolkits.
public class CorrelationListCommand : RasterCommand
Public Class CorrelationListCommand
Inherits RasterCommand
@interface LTCorrelationListCommand : LTRasterCommand
public class CorrelationListCommand extends RasterCommand
public ref class CorrelationListCommand : public RasterCommand
For example:
Select an image that contains the objects for which you are searching.
For example:
Set XStep = 1, YStep = 1 and Threshold = 90 then run the command
This method 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.
Run the CorrelationListCommand on an image.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Core;
public void CorrelationListCommandExample()
{
// Load an image
RasterCodecs codecs = new RasterCodecs();
codecs.ThrowExceptionsOnInvalidImages = true;
RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "clean.tif"));
CorrelationListCommand command = new CorrelationListCommand();
CopyRectangleCommand copyRectangle = new CopyRectangleCommand();
LeadRect rc_cor = new LeadRect(458, 591, 21, 28);
copyRectangle.Rectangle = rc_cor;
copyRectangle.Run(image);
command.CorrelationImage = copyRectangle.DestinationImage.Clone();
rc_cor = new LeadRect(507, 591, 21, 28);
copyRectangle.Rectangle = rc_cor;
copyRectangle.Run(image);
command.CorrelationImage.AddPage(copyRectangle.DestinationImage.Clone());
command.Points = new LeadPoint[30];
command.ListIndex = new int[30];
command.Threshold = 90;
command.XStep = 1;
command.YStep = 1;
command.Run(image);
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.ImageProcessing.Core
Public Sub CorrelationListCommandExample()
' Load an image
Dim codecs As RasterCodecs = New RasterCodecs()
codecs.ThrowExceptionsOnInvalidImages = True
Dim image As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "clean.tif"))
Dim command As CorrelationListCommand = New CorrelationListCommand()
Dim copyRectangle As CopyRectangleCommand = New CopyRectangleCommand()
Dim rc_cor As LeadRect = New LeadRect(458, 591, 21, 28)
copyRectangle.Rectangle = rc_cor
copyRectangle.Run(image)
command.CorrelationImage = copyRectangle.DestinationImage.Clone()
rc_cor = New LeadRect(507, 591, 21, 28)
copyRectangle.Rectangle = rc_cor
copyRectangle.Run(image)
command.CorrelationImage.AddPage(copyRectangle.DestinationImage.Clone())
Dim points(30) As LeadPoint
Dim listIndex(30) As Integer
command.Points = points
command.ListIndex = listIndex
command.Threshold = 90
command.XStep = 1
command.YStep = 1
command.Run(image)
End Sub
Public NotInheritable Class LEAD_VARS
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class
c#[Silverlight C# Example]
using Leadtools;
using Leadtools.ImageProcessing;
using Leadtools.Examples;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Core;
public void CorrelationListCommandExample(RasterImage image, Stream outStream)
{
CorrelationListCommand command = new CorrelationListCommand();
CopyRectangleCommand copyRectangle = new CopyRectangleCommand();
LeadRect rc_cor = new LeadRect(327, 378, 22, 28);
copyRectangle.Rectangle = rc_cor;
copyRectangle.Run(image);
command.CorrelationImage = copyRectangle.DestinationImage.Clone();
rc_cor = new LeadRect(283, 378, 22, 28);
copyRectangle.Rectangle = rc_cor;
copyRectangle.Run(image);
command.CorrelationImage.AddPage(copyRectangle.DestinationImage.Clone());
command.Points = new LeadPoint[30];
command.ListIndex = new int[30];
command.Threshold = 90;
command.XStep = 1;
command.YStep = 1;
command.Run(image);
// Save result image
RasterCodecs codecs = new RasterCodecs();
codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
image.Dispose();
}
vb[Silverlight VB Example]
Imports Leadtools
Imports Leadtools.ImageProcessing
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Core
Public Sub CorrelationListCommandExample(ByVal image As RasterImage, ByVal outStream As Stream)
Dim command As CorrelationListCommand = New CorrelationListCommand()
Dim copyRectangle As CopyRectangleCommand = New CopyRectangleCommand()
Dim rc_cor As LeadRect = New LeadRect(327, 378, 22, 28)
copyRectangle.Rectangle = rc_cor
copyRectangle.Run(image)
command.CorrelationImage = copyRectangle.DestinationImage.Clone()
rc_cor = New LeadRect(283, 378, 22, 28)
copyRectangle.Rectangle = rc_cor
copyRectangle.Run(image)
command.CorrelationImage.AddPage(copyRectangle.DestinationImage.Clone())
command.Points = New LeadPoint(29) {}
command.ListIndex = New Integer(29) {}
command.Threshold = 90
command.XStep = 1
command.YStep = 1
command.Run(image)
' Save result image
Dim codecs As RasterCodecs = New RasterCodecs()
codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24)
image.Dispose()
End Sub
CorrelationListCommand Members
Leadtools.ImageProcessing.Core Namespace
Leadtools.ImageProcessing.Color.IntensityDetectCommand
Leadtools.ImageProcessing.Effects.SpatialFilterCommand
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
Multimedia
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms
Supported Platforms
.NET, Java, Android, and iOS/macOS Assemblies
Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
HTML5 JavaScript Libraries
Imaging, Medical, and Document