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Accord.NET (logo) ThresholdedEuclideanDifference Class
Calculate Euclidean difference between two images and threshold it.
Inheritance Hierarchy
SystemObject
  Accord.Imaging.FiltersBaseFilter
    Accord.Imaging.FiltersBaseFilter2
      Accord.Imaging.FiltersThresholdedEuclideanDifference

Namespace:  Accord.Imaging.Filters
Assembly:  Accord.Imaging (in Accord.Imaging.dll) Version: 3.4.0
Syntax
public class ThresholdedEuclideanDifference : BaseFilter2
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The ThresholdedEuclideanDifference type exposes the following members.

Constructors
  NameDescription
Public methodThresholdedEuclideanDifference
Initializes a new instance of the ThresholdedEuclideanDifference class.
Public methodThresholdedEuclideanDifference(Int32)
Initializes a new instance of the ThresholdedEuclideanDifference class.
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Properties
  NameDescription
Public propertyFormatTranslations
Format translations dictionary.
(Overrides BaseFilterFormatTranslations.)
Public propertyOverlayImage
Overlay image.
(Inherited from BaseFilter2.)
Public propertyThreshold
Difference threshold.
Public propertyUnmanagedOverlayImage
Unmanaged overlay image.
(Inherited from BaseFilter2.)
Public propertyWhitePixelsCount
Number of pixels which were set to white in destination image during last image processing call.
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Methods
  NameDescription
Public methodApply(Bitmap)
Apply filter to an image.
(Inherited from BaseFilter.)
Public methodApply(BitmapData)
Apply filter to an image.
(Inherited from BaseFilter.)
Public methodApply(UnmanagedImage)
Apply filter to an image in unmanaged memory.
(Inherited from BaseFilter.)
Public methodApply(UnmanagedImage, UnmanagedImage)
Apply filter to an image in unmanaged memory.
(Inherited from BaseFilter.)
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Protected methodFinalize
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object.)
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Protected methodProcessFilter(UnmanagedImage, UnmanagedImage)
Process the filter on the specified image.
(Inherited from BaseFilter2.)
Protected methodProcessFilter(UnmanagedImage, UnmanagedImage, UnmanagedImage)
Process the filter on the specified image.
(Overrides BaseFilter2ProcessFilter(UnmanagedImage, UnmanagedImage, UnmanagedImage).)
Public methodToString
Returns a string that represents the current object.
(Inherited from Object.)
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Extension Methods
  NameDescription
Public Extension MethodHasMethod
Checks whether an object implements a method with the given name.
(Defined by ExtensionMethods.)
Public Extension MethodToTOverloaded.
Converts an object into another type, irrespective of whether the conversion can be done at compile time or not. This can be used to convert generic types to numeric types during runtime.
(Defined by ExtensionMethods.)
Public Extension MethodToTOverloaded.
Converts an object into another type, irrespective of whether the conversion can be done at compile time or not. This can be used to convert generic types to numeric types during runtime.
(Defined by Matrix.)
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Remarks

The filter produces similar to ThresholdedDifference, however it uses Euclidean distance for finding difference between pixel values instead of Manhattan distance. Result of this image processing routine may be useful in motion detection applications or finding areas of significant difference.

The filter accepts 8 and 24/32color images for processing.

Sample usage:

// create filter
ThresholdedEuclideanDifference filter = new ThresholdedEuclideanDifference( 60 );
// apply the filter
filter.OverlayImage = backgroundImage;
Bitmap resultImage = filter.Apply( sourceImage );

Source image:

Background image:

Result image:

See Also