cv::phase_unwrapping::HistogramPhaseUnwrapping Class Reference

Class implementing two-dimensional phase unwrapping based on [157] This algorithm belongs to the quality-guided phase unwrapping methods. First, it computes a reliability map from second differences between a pixel and its eight neighbours. Reliability values lie between 0 and 16*pi*pi. Then, this reliability map is used to compute the reliabilities of "edges". An edge is an entity defined by two pixels that are connected horizontally or vertically. Its reliability is found by adding the the reliabilities of the two pixels connected through it. Edges are sorted in a histogram based on their reliability values. This histogram is then used to unwrap pixels, starting from the highest quality pixel. More...

#include <opencv2/phase_unwrapping/histogramphaseunwrapping.hpp>

Collaboration diagram for cv::phase_unwrapping::HistogramPhaseUnwrapping:

Classes
struct	Params
	Parameters of phaseUnwrapping constructor. More...

Public Member Functions
virtual void	getInverseReliabilityMap (OutputArray reliabilityMap)=0
	Get the reliability map computed from the wrapped phase map.
Public Member Functions inherited from cv::phase_unwrapping::PhaseUnwrapping
virtual void	unwrapPhaseMap (InputArray wrappedPhaseMap, OutputArray unwrappedPhaseMap, InputArray shadowMask=noArray())=0
	Unwraps a 2D phase map.
Public Member Functions inherited from cv::Algorithm
	Algorithm ()
virtual	~Algorithm ()
virtual void	clear ()
	Clears the algorithm state.
virtual bool	empty () const
	Returns true if the Algorithm is empty (e.g. in the very beginning or after unsuccessful read.
virtual String	getDefaultName () const
virtual void	read (const FileNode &fn)
	Reads algorithm parameters from a file storage.
virtual void	save (const String &filename) const
void	write (const Ptr< FileStorage > &fs, const String &name=String()) const
virtual void	write (FileStorage &fs) const
	Stores algorithm parameters in a file storage.
void	write (FileStorage &fs, const String &name) const

Static Public Member Functions
static Ptr< HistogramPhaseUnwrapping >	create (const HistogramPhaseUnwrapping::Params &parameters=HistogramPhaseUnwrapping::Params())
	Constructor.
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.
template<typename _Tp >
static Ptr< _Tp >	loadFromString (const String &strModel, const String &objname=String())
	Loads algorithm from a String.
template<typename _Tp >
static Ptr< _Tp >	read (const FileNode &fn)
	Reads algorithm from the file node.

Additional Inherited Members
Protected Member Functions inherited from cv::Algorithm
void	writeFormat (FileStorage &fs) const

Detailed Description

Class implementing two-dimensional phase unwrapping based on [157] This algorithm belongs to the quality-guided phase unwrapping methods. First, it computes a reliability map from second differences between a pixel and its eight neighbours. Reliability values lie between 0 and 16*pi*pi. Then, this reliability map is used to compute the reliabilities of "edges". An edge is an entity defined by two pixels that are connected horizontally or vertically. Its reliability is found by adding the the reliabilities of the two pixels connected through it. Edges are sorted in a histogram based on their reliability values. This histogram is then used to unwrap pixels, starting from the highest quality pixel.

The wrapped phase map and the unwrapped result are stored in CV_32FC1 Mat.

Member Function Documentation

create()

static Ptr< HistogramPhaseUnwrapping > cv::phase_unwrapping::HistogramPhaseUnwrapping::create ( const HistogramPhaseUnwrapping::Params &  parameters = HistogramPhaseUnwrapping::Params() )

static

Python:
	cv.phase_unwrapping.HistogramPhaseUnwrapping.create(	[, parameters]	) ->	retval
	cv.phase_unwrapping.HistogramPhaseUnwrapping_create(	[, parameters]	) ->	retval

Constructor.

Parameters

parameters

HistogramPhaseUnwrapping parameters HistogramPhaseUnwrapping::Params: width,height of the phase map and histogram characteristics.

getInverseReliabilityMap()

virtual void cv::phase_unwrapping::HistogramPhaseUnwrapping::getInverseReliabilityMap ( OutputArray  reliabilityMap )

pure virtual

Python:
	cv.phase_unwrapping.HistogramPhaseUnwrapping.getInverseReliabilityMap(	[, reliabilityMap]	) ->	reliabilityMap

Get the reliability map computed from the wrapped phase map.

Parameters

reliabilityMap

Image where the reliability map is stored.

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

• opencv2/phase_unwrapping/histogramphaseunwrapping.hpp