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ConnectedComponentsLabeling Class
Connected components labeling.
Inheritance Hierarchy
SystemObject
  Accord.Imaging.FiltersBaseFilter
    Accord.Imaging.FiltersConnectedComponentsLabeling

Namespace:  Accord.Imaging.Filters
Assembly:  Accord.Imaging (in Accord.Imaging.dll) Version: 3.8.0
Syntax
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public class ConnectedComponentsLabeling : BaseFilter
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The ConnectedComponentsLabeling type exposes the following members.

Constructors
  NameDescription
Public methodConnectedComponentsLabeling
Initializes a new instance of the ConnectedComponentsLabeling class.
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Properties
  NameDescription
Public propertyBlobCounter
Blob counter used to locate separate blobs.
Public propertyStatic memberColorTable
Colors used to color the binary image.
Public propertyCoupledSizeFiltering
Specifies if size filetering should be coupled or not.
Public propertyFilterBlobs
Specifies if blobs should be filtered.
Public propertyFormatTranslations
Format translations dictionary.
(Overrides BaseFilterFormatTranslations.)
Public propertyMaxHeight
Maximum allowed height of blob.
Public propertyMaxWidth
Maximum allowed width of blob.
Public propertyMinHeight
Minimum allowed height of blob.
Public propertyMinWidth
Minimum allowed width of blob.
Public propertyObjectCount
Objects count.
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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
Process the filter on the specified image.
(Overrides BaseFilterProcessFilter(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 MethodIsEqual
Compares two objects for equality, performing an elementwise comparison if the elements are vectors or matrices.
(Defined by Matrix.)
Public Extension MethodTo(Type)Overloaded.
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 ExtensionMethods.)
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Remarks

The filter performs labeling of objects in the source image. It colors each separate object using different color. The image processing filter treats all none black pixels as objects' pixels and all black pixel as background.

The filter accepts 8 bpp grayscale images and 24/32 bpp color images and produces 24 bpp RGB image.

Sample usage:

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// create filter
var filter = new ConnectedComponentsLabeling();

// apply the filter
Bitmap newImage = filter.Apply(image);

// check objects count
int objectCount = filter.ObjectCount;

Initial image:

Result image:

See Also