Click or drag to resize

EM Class

The class implements the Expectation Maximization algorithm.
Inheritance Hierarchy

Namespace:  OpenCvSharp
Assembly:  OpenCvSharp (in OpenCvSharp.dll) Version: 1.0.0
Syntax
public class EM : Algorithm

The EM type exposes the following members.

Constructors
  NameDescription
Protected methodEM
Creates instance by pointer cv::Ptr<EM>
Top
Properties
  NameDescription
Protected propertyAllocatedMemory
Gets or sets a memory address allocated by AllocMemory.
(Inherited from DisposableObject.)
Protected propertyAllocatedMemorySize
Gets or sets the byte length of the allocated memory
(Inherited from DisposableObject.)
Public propertyClustersNumber
The number of mixture components in the Gaussian mixture model. Default value of the parameter is EM::DEFAULT_NCLUSTERS=5. Some of EM implementation could determine the optimal number of mixtures within a specified value range, but that is not the case in ML yet.
Public propertyCovarianceMatrixType
Constraint on covariance matrices which defines type of matrices.
Public propertyCvPtr
Native pointer of OpenCV structure
(Inherited from DisposableCvObject.)
Protected propertyDataHandle
Gets or sets a handle which allocates using cvSetData.
(Inherited from DisposableObject.)
Public propertyEmpty
Returns true if the Algorithm is empty (e.g. in the very beginning or after unsuccessful read
(Inherited from Algorithm.)
Public propertyIsDisposed
Gets a value indicating whether this instance has been disposed.
(Inherited from DisposableObject.)
Public propertyIsEnabledDispose
Gets or sets a value indicating whether you permit disposing this instance.
(Inherited from DisposableObject.)
Public propertyTermCriteria
The termination criteria of the %EM algorithm. The EM algorithm can be terminated by the number of iterations termCrit.maxCount (number of M-steps) or when relative change of likelihood logarithm is less than termCrit.epsilon. Default maximum number of iterations is EM::DEFAULT_MAX_ITERS=100.
Top
Methods
  NameDescription
Protected methodAllocGCHandle
Pins the object to be allocated by cvSetData.
(Inherited from DisposableObject.)
Protected methodAllocMemory
Allocates the specified size of memory.
(Inherited from DisposableObject.)
Public methodStatic memberCreate
Creates empty EM model.
Public methodDispose
Releases the resources
(Inherited from DisposableObject.)
Protected methodDispose(Boolean)
Releases the resources
(Inherited from DisposableObject.)
Protected methodDisposeManaged
Releases managed resources
(Overrides DisposableObjectDisposeManaged.)
Protected methodDisposeUnmanaged
releases unmanaged resources
(Inherited from DisposableCvObject.)
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Protected methodFinalize
Destructor
(Inherited from DisposableObject.)
Public methodGetCovs
Returns covariation matrices. Returns vector of covariation matrices. Number of matrices is the number of gaussian mixtures, each matrix is a square floating-point matrix NxN, where N is the space dimensionality.
Public methodGetDefaultName
Returns the algorithm string identifier. This string is used as top level xml/yml node tag when the object is saved to a file or string.
(Inherited from Algorithm.)
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodGetMeans
Returns the cluster centers (means of the Gaussian mixture). Returns matrix with the number of rows equal to the number of mixtures and number of columns equal to the space dimensionality.
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Public methodGetWeights
Returns weights of the mixtures. Returns vector with the number of elements equal to the number of mixtures.
Public methodStatic memberLoad
Loads and creates a serialized model from a file.
Public methodStatic memberLoadFromString
Loads algorithm from a String.
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Protected methodNotifyMemoryPressure
Notifies the allocated size of memory.
(Inherited from DisposableObject.)
Public methodPredict2
Predicts the response for sample
Public methodRead
Reads algorithm parameters from a file storage
(Inherited from Algorithm.)
Public methodSave
Saves the algorithm to a file. In order to make this method work, the derived class must implement Algorithm::write(FileStorage fs).
(Inherited from Algorithm.)
Public methodThrowIfDisposed
If this object is disposed, then ObjectDisposedException is thrown.
(Inherited from DisposableObject.)
Public methodToString
Returns a string that represents the current object.
(Inherited from Object.)
Public methodTrainE
Estimate the Gaussian mixture parameters from a samples set.
Public methodTrainEM
Estimate the Gaussian mixture parameters from a samples set.
Public methodTrainM
Estimate the Gaussian mixture parameters from a samples set.
Public methodWrite
Stores algorithm parameters in a file storage
(Inherited from Algorithm.)
Top
Fields
  NameDescription
Public fieldStatic memberDEFAULT_MAX_ITERS
Public fieldStatic memberDEFAULT_NCLUSTERS
Protected fieldptr
Data pointer
(Inherited from DisposableCvObject.)
Top
See Also