OpenCV  3.4.20-dev
Open Source Computer Vision
Public Member Functions | Protected Attributes | List of all members
cv::optflow::OpticalFlowPCAFlow Class Reference

PCAFlow algorithm. More...

#include <opencv2/optflow/pcaflow.hpp>

Inheritance diagram for cv::optflow::OpticalFlowPCAFlow:
cv::DenseOpticalFlow cv::Algorithm

Public Member Functions

 OpticalFlowPCAFlow (Ptr< const PCAPrior > _prior=Ptr< const PCAPrior >(), const Size _basisSize=Size(18, 14), float _sparseRate=0.024, float _retainedCornersFraction=0.2, float _occlusionsThreshold=0.0003, float _dampingFactor=0.00002, float _claheClip=14)
 Creates an instance of PCAFlow algorithm. More...
void calc (InputArray I0, InputArray I1, InputOutputArray flow) CV_OVERRIDE
 Calculates an optical flow. More...
void collectGarbage () CV_OVERRIDE
 Releases all inner buffers. More...
- Public Member Functions inherited from cv::Algorithm
 Algorithm ()
virtual ~Algorithm ()
virtual void clear ()
 Clears the algorithm state. More...
virtual bool empty () const
 Returns true if the Algorithm is empty (e.g. in the very beginning or after unsuccessful read. More...
virtual String getDefaultName () const
virtual void read (const FileNode &fn)
 Reads algorithm parameters from a file storage. More...
virtual void save (const String &filename) const
virtual void write (FileStorage &fs) const
 Stores algorithm parameters in a file storage. More...
void write (FileStorage &fs, const String &name) const
void write (const Ptr< FileStorage > &fs, const String &name=String()) const

Protected Attributes

const Size basisSize
const float claheClip
const float dampingFactor
const float occlusionsThreshold
const Ptr< const PCAPriorprior
const float retainedCornersFraction
const float sparseRate
bool useOpenCL

Additional Inherited Members

- Static Public Member Functions inherited from cv::Algorithm
template<typename _Tp >
static Ptr< _Tp > load (const String &filename, const String &objname=String())
 Loads algorithm from the file. More...
template<typename _Tp >
static Ptr< _Tp > loadFromString (const String &strModel, const String &objname=String())
 Loads algorithm from a String. More...
template<typename _Tp >
static Ptr< _Tp > read (const FileNode &fn)
 Reads algorithm from the file node. More...
- Protected Member Functions inherited from cv::Algorithm
void writeFormat (FileStorage &fs) const

Detailed Description

PCAFlow algorithm.

Constructor & Destructor Documentation

◆ OpticalFlowPCAFlow()

cv::optflow::OpticalFlowPCAFlow::OpticalFlowPCAFlow ( Ptr< const PCAPrior _prior = Ptr< const PCAPrior >(),
const Size  _basisSize = Size(18, 14),
float  _sparseRate = 0.024,
float  _retainedCornersFraction = 0.2,
float  _occlusionsThreshold = 0.0003,
float  _dampingFactor = 0.00002,
float  _claheClip = 14 

Creates an instance of PCAFlow algorithm.

_priorLearned prior or no prior (default).
See also
_basisSizeNumber of basis vectors.
_sparseRateControls density of sparse matches.
_retainedCornersFractionRetained corners fraction.
_occlusionsThresholdOcclusion threshold.
_dampingFactorRegularization term for solving least-squares. It is not related to the prior regularization.
_claheClipClip parameter for CLAHE.

Member Function Documentation

◆ calc()

void cv::optflow::OpticalFlowPCAFlow::calc ( InputArray  I0,
InputArray  I1,
InputOutputArray  flow 

Calculates an optical flow.

I0first 8-bit single-channel input image.
I1second input image of the same size and the same type as prev.
flowcomputed flow image that has the same size as prev and type CV_32FC2.

Implements cv::DenseOpticalFlow.

◆ collectGarbage()

void cv::optflow::OpticalFlowPCAFlow::collectGarbage ( )

Releases all inner buffers.

Implements cv::DenseOpticalFlow.

Member Data Documentation

◆ basisSize

const Size cv::optflow::OpticalFlowPCAFlow::basisSize

◆ claheClip

const float cv::optflow::OpticalFlowPCAFlow::claheClip

◆ dampingFactor

const float cv::optflow::OpticalFlowPCAFlow::dampingFactor

◆ occlusionsThreshold

const float cv::optflow::OpticalFlowPCAFlow::occlusionsThreshold

◆ prior

const Ptr<const PCAPrior> cv::optflow::OpticalFlowPCAFlow::prior

◆ retainedCornersFraction

const float cv::optflow::OpticalFlowPCAFlow::retainedCornersFraction

◆ sparseRate

const float cv::optflow::OpticalFlowPCAFlow::sparseRate

◆ useOpenCL

bool cv::optflow::OpticalFlowPCAFlow::useOpenCL

The documentation for this class was generated from the following file: