cv::text::ERFilter Class Reference

Base class for 1st and 2nd stages of Neumann and Matas scene text detection algorithm [147]. : More...

#include "erfilter.hpp"

Inheritance diagram for cv::text::ERFilter:

Classes
class	Callback
	Callback with the classifier is made a class. More...

Public Member Functions
virtual int	getNumRejected () const =0
virtual void	run (InputArray image, std::vector< ERStat > &regions)=0
	The key method of ERFilter algorithm. More...
virtual void	setCallback (const Ptr< ERFilter::Callback > &cb)=0
	set/get methods to set the algorithm properties, More...
virtual void	setMaxArea (float maxArea)=0
virtual void	setMinArea (float minArea)=0
virtual void	setMinProbability (float minProbability)=0
virtual void	setMinProbabilityDiff (float minProbabilityDiff)=0
virtual void	setNonMaxSuppression (bool nonMaxSuppression)=0
virtual void	setThresholdDelta (int thresholdDelta)=0
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 (const Ptr< FileStorage > &fs, const String &name=String()) const
	simplified API for language bindings This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...

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

Base class for 1st and 2nd stages of Neumann and Matas scene text detection algorithm [147]. :

Extracts the component tree (if needed) and filter the extremal regions (ER's) by using a given classifier.

Member Function Documentation

getNumRejected()

virtual int cv::text::ERFilter::getNumRejected ( ) const

pure virtual

run()

virtual void cv::text::ERFilter::run ( InputArray  image, std::vector< ERStat > &  regions  )

pure virtual

The key method of ERFilter algorithm.

Takes image on input and returns the selected regions in a vector of ERStat only distinctive ERs which correspond to characters are selected by a sequential classifier

Parameters

image	Single channel image CV_8UC1
regions	Output for the 1st stage and Input/Output for the 2nd. The selected Extremal Regions are stored here.

Extracts the component tree (if needed) and filter the extremal regions (ER's) by using a given classifier.

setCallback()

virtual void cv::text::ERFilter::setCallback ( const Ptr< ERFilter::Callback > &  cb )

pure virtual

set/get methods to set the algorithm properties,

setMaxArea()

virtual void cv::text::ERFilter::setMaxArea ( float  maxArea )

pure virtual

setMinArea()

virtual void cv::text::ERFilter::setMinArea ( float  minArea )

pure virtual

setMinProbability()

virtual void cv::text::ERFilter::setMinProbability ( float  minProbability )

pure virtual

setMinProbabilityDiff()

virtual void cv::text::ERFilter::setMinProbabilityDiff ( float  minProbabilityDiff )

pure virtual

setNonMaxSuppression()

virtual void cv::text::ERFilter::setNonMaxSuppression ( bool  nonMaxSuppression )

pure virtual

setThresholdDelta()

virtual void cv::text::ERFilter::setThresholdDelta ( int  thresholdDelta )

pure virtual

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

• /build/master-contrib_docs-lin64/opencv_contrib/modules/text/include/opencv2/text/erfilter.hpp