Visual Basic (Declaration) | |
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Public Class CorrelationCommand Inherits Leadtools.ImageProcessing.RasterCommand Implements IRasterCommand |
Visual Basic (Usage) | Copy Code |
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Dim instance As CorrelationCommand |
C# | |
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public class CorrelationCommand : Leadtools.ImageProcessing.RasterCommand, IRasterCommand |
C++/CLI | |
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public ref class CorrelationCommand : public Leadtools.ImageProcessing.RasterCommand, IRasterCommand |
Run the CorrelationCommand on an image and applies the correlation filter.
Visual Basic | Copy Code |
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Public Sub CorrelationCommandExample() Dim codecs As New RasterCodecs() codecs.ThrowExceptionsOnInvalidImages = True Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg")) ' Prepare the command Dim points() As LeadPoint ReDim points(89) Dim DstImage As RasterImage = leadImage.Clone() Dim command As CorrelationCommand = New CorrelationCommand command.CorrelationImage = DstImage command.Threshold = 70 command.XStep = 1 command.YStep = 1 command.Points = points 'Apply the correlation filter. command.Run(leadImage) End Sub Public NotInheritable Class LEAD_VARS Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" End Class |
C# | Copy Code |
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public void CorrelationCommandExample() { // Load an image RasterCodecs codecs = new RasterCodecs(); codecs.ThrowExceptionsOnInvalidImages = true; RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg")); // Prepare the command RasterImage DstImage = image.Clone(); CorrelationCommand command = new CorrelationCommand(); command.CorrelationImage = DstImage; command.Threshold = 70; command.XStep = 1; command.YStep = 1; command.Points = new LeadPoint[90]; //Apply the correlation filter. command.Run(image); } static class LEAD_VARS { public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; } |
SilverlightCSharp | Copy Code |
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public void CorrelationCommandExample(RasterImage image, Stream outStream) { // Prepare the command RasterImage DstImage = image.Clone(); CorrelationCommand command = new CorrelationCommand(); command.CorrelationImage = DstImage; command.Threshold = 70; command.XStep = 1; command.YStep = 1; command.Points = new LeadPoint[90]; //Apply the correlation filter. command.Run(image); // Save result image RasterCodecs codecs = new RasterCodecs(); codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24); image.Dispose(); } |
SilverlightVB | Copy Code |
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Public Sub CorrelationCommandExample(ByVal image As RasterImage, ByVal outStream As Stream) ' Prepare the command Dim DstImage As RasterImage = image.Clone() Dim command As CorrelationCommand = New CorrelationCommand() command.CorrelationImage = DstImage command.Threshold = 70 command.XStep = 1 command.YStep = 1 command.Points = New LeadPoint(89){} 'Apply the correlation filter. command.Run(image) ' Save result image Dim codecs As RasterCodecs = New RasterCodecs() codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24) image.Dispose() End Sub |
- This command compares the correlation image (or part of the correlation image) with all the areas of the same dimensions in the image to be searched and finds those portions that match according to the measure of correlation. Correlation is a measure of association (resemblance) between two images. It varies from 0 (zero resemblance) to 100 (perfect resemblance). This command updates the Points property (or the points parameter of the Constructor) with the point of origin for those areas of the image to be searched where the resemblance with the correlation image (or part of the correlation image) is greater than the threshold. The correlation image dimensions must be less than or equal to the dimensions of the iamge to be searched.
- For example:
- Select an image of the object for which you want to look. Put it in the CorrelationImage property (or the correlationImage parameter of the constructor). For example:
- Select an image that contains the image you wish to search and put it in the affected image. For example:
- Call CorrelationCommand.
- The command will update the Points array property (or the points parameter of the Constructor) with the point of origin (top-left) for each area of the image to be searched where the correlation with the correlation image is greater than the correlation threshold. The height and width of the rectangles are the same as for the correlation image.
- The result is:
- Select an image of the object for which you want to look. Put it in the CorrelationImage property (or the correlationImage parameter of the constructor). For example:
- This command 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 command does not support 32-bit grayscale images.
- All images must be signed or unsigned.
System.Object
Leadtools.ImageProcessing.RasterCommand
Leadtools.ImageProcessing.Core.CorrelationCommand
Target Platforms: Silverlight 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)
Reference
CorrelationCommand MembersLeadtools.ImageProcessing.Core Namespace
Introduction to Image Processing With LEADTOOLS
Leadtools.ImageProcessing.Color.IntensityDetectCommand
Leadtools.ImageProcessing.Effects.SpatialFilterCommand
Leadtools.ImageProcessing.Effects.BinaryFilterCommand
MaximumCommand Class
MinimumCommand Class