org.opencv.video

Class KalmanFilter

java.lang.Object

org.opencv.video.KalmanFilter

public class KalmanFilter
extends Object

Kalman filter class.

The class implements a standard Kalman filter http://en.wikipedia.org/wiki/Kalman_filter, [Welch95]. However, you can modify transitionMatrix, controlMatrix, and measurementMatrix to get an extended Kalman filter functionality. See the OpenCV sample kalman.cpp.

Note:

• An example using the standard Kalman filter can be found at opencv_source_code/samples/cpp/kalman.cpp

See Also:

org.opencv.video.KalmanFilter

Field Summary

Fields

Modifier and Type	Field and Description
protected long	nativeObj

Constructor Summary

Constructors

Modifier	Constructor and Description
	KalmanFilter() The constructors.
	KalmanFilter(int dynamParams, int measureParams) The constructors.
	KalmanFilter(int dynamParams, int measureParams, int controlParams, int type) The constructors.
protected	KalmanFilter(long addr)

Method Summary

Modifier and Type	Method and Description
Mat	correct(Mat measurement) Updates the predicted state from the measurement.
protected void	finalize()
Mat	predict() Computes a predicted state.
Mat	predict(Mat control) Computes a predicted state.

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

nativeObj

protected final long nativeObj

Constructor Detail

KalmanFilter

protected KalmanFilter(long addr)

KalmanFilter

public KalmanFilter()

The constructors.

The full constructor.

Note: In C API when CvKalman* kalmanFilter structure is not needed anymore, it should be released with cvReleaseKalman(&kalmanFilter)

See Also:

org.opencv.video.KalmanFilter.KalmanFilter

KalmanFilter

public KalmanFilter(int dynamParams,
                    int measureParams,
                    int controlParams,
                    int type)

The constructors.

The full constructor.

Note: In C API when CvKalman* kalmanFilter structure is not needed anymore, it should be released with cvReleaseKalman(&kalmanFilter)

Parameters:

dynamParams - Dimensionality of the state.

measureParams - Dimensionality of the measurement.

controlParams - Dimensionality of the control vector.

type - Type of the created matrices that should be CV_32F or CV_64F.

See Also:

org.opencv.video.KalmanFilter.KalmanFilter

KalmanFilter

public KalmanFilter(int dynamParams,
                    int measureParams)

The constructors.

The full constructor.

Note: In C API when CvKalman* kalmanFilter structure is not needed anymore, it should be released with cvReleaseKalman(&kalmanFilter)

Parameters:

dynamParams - Dimensionality of the state.

measureParams - Dimensionality of the measurement.

See Also:

org.opencv.video.KalmanFilter.KalmanFilter

Method Detail

correct

public Mat correct(Mat measurement)

Updates the predicted state from the measurement.

Parameters:

measurement - The measured system parameters

See Also:

org.opencv.video.KalmanFilter.correct

predict

public Mat predict(Mat control)

Computes a predicted state.

Parameters:

control - The optional input control

See Also:

org.opencv.video.KalmanFilter.predict

predict

public Mat predict()

Computes a predicted state.

See Also:

org.opencv.video.KalmanFilter.predict

finalize

protected void finalize()
                 throws Throwable

Overrides:

finalize in class Object

Throws:

Throwable