Package org.opencv.video

Class VariationalRefinement

java.lang.Object

org.opencv.core.Algorithm

org.opencv.video.DenseOpticalFlow

org.opencv.video.VariationalRefinement

public class VariationalRefinement
extends DenseOpticalFlow

Variational optical flow refinement This class implements variational refinement of the input flow field, i.e. it uses input flow to initialize the minimization of the following functional: \(E(U) = \int_{\Omega} \delta \Psi(E_I) + \gamma \Psi(E_G) + \alpha \Psi(E_S) \), where \(E_I,E_G,E_S\) are color constancy, gradient constancy and smoothness terms respectively. \(\Psi(s^2)=\sqrt{s^2+\epsilon^2}\) is a robust penalizer to limit the influence of outliers. A complete formulation and a description of the minimization procedure can be found in CITE: Brox2004

Field Summary

Fields inherited from class org.opencv.core.Algorithm

nativeObj

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	VariationalRefinement(long addr)

Method Summary

Modifier and Type	Method	Description
static VariationalRefinement	__fromPtr__(long addr)
void	calcUV(Mat I0, Mat I1, Mat flow_u, Mat flow_v)	REF: calc function overload to handle separate horizontal (u) and vertical (v) flow components (to avoid extra splits/merges)
static VariationalRefinement	create()	Creates an instance of VariationalRefinement
protected void	finalize()
float	getAlpha()	Weight of the smoothness term SEE: setAlpha
float	getDelta()	Weight of the color constancy term SEE: setDelta
int	getFixedPointIterations()	Number of outer (fixed-point) iterations in the minimization procedure.
float	getGamma()	Weight of the gradient constancy term SEE: setGamma
float	getOmega()	Relaxation factor in SOR SEE: setOmega
int	getSorIterations()	Number of inner successive over-relaxation (SOR) iterations in the minimization procedure to solve the respective linear system.
void	setAlpha(float val)	getAlpha SEE: getAlpha
void	setDelta(float val)	getDelta SEE: getDelta
void	setFixedPointIterations(int val)	getFixedPointIterations SEE: getFixedPointIterations
void	setGamma(float val)	getGamma SEE: getGamma
void	setOmega(float val)	getOmega SEE: getOmega
void	setSorIterations(int val)	getSorIterations SEE: getSorIterations

Methods inherited from class org.opencv.video.DenseOpticalFlow

calc, collectGarbage

Methods inherited from class org.opencv.core.Algorithm

clear, empty, getDefaultName, getNativeObjAddr, save

Methods inherited from class java.lang.Object

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

Constructor Detail

VariationalRefinement

protected VariationalRefinement(long addr)

Method Detail

__fromPtr__

public static VariationalRefinement __fromPtr__(long addr)

create

public static VariationalRefinement create()

Creates an instance of VariationalRefinement

Returns:

automatically generated

getAlpha

public float getAlpha()

Weight of the smoothness term SEE: setAlpha

Returns:

automatically generated

getDelta

public float getDelta()

Weight of the color constancy term SEE: setDelta

Returns:

automatically generated

getGamma

public float getGamma()

Weight of the gradient constancy term SEE: setGamma

Returns:

automatically generated

getOmega

public float getOmega()

Relaxation factor in SOR SEE: setOmega

Returns:

automatically generated

getFixedPointIterations

public int getFixedPointIterations()

Number of outer (fixed-point) iterations in the minimization procedure. SEE: setFixedPointIterations

Returns:

automatically generated

getSorIterations

public int getSorIterations()

Number of inner successive over-relaxation (SOR) iterations in the minimization procedure to solve the respective linear system. SEE: setSorIterations

Returns:

automatically generated

calcUV

public void calcUV(Mat I0,
                   Mat I1,
                   Mat flow_u,
                   Mat flow_v)

REF: calc function overload to handle separate horizontal (u) and vertical (v) flow components (to avoid extra splits/merges)

Parameters:

I0 - automatically generated

I1 - automatically generated

flow_u - automatically generated

flow_v - automatically generated

setAlpha

public void setAlpha(float val)

getAlpha SEE: getAlpha

Parameters:

val - automatically generated

setDelta

public void setDelta(float val)

getDelta SEE: getDelta

Parameters:

val - automatically generated

setFixedPointIterations

public void setFixedPointIterations(int val)

getFixedPointIterations SEE: getFixedPointIterations

Parameters:

val - automatically generated

setGamma

public void setGamma(float val)

getGamma SEE: getGamma

Parameters:

val - automatically generated

setOmega

public void setOmega(float val)

getOmega SEE: getOmega

Parameters:

val - automatically generated

setSorIterations

public void setSorIterations(int val)

getSorIterations SEE: getSorIterations

Parameters:

val - automatically generated

finalize

protected void finalize()
                 throws java.lang.Throwable

Overrides:

finalize in class DenseOpticalFlow

Throws:

java.lang.Throwable