OpenCV  4.2.0-pre
Open Source Computer Vision
Classes | Public Member Functions | List of all members
cv::text::ERFilter Class Referenceabstract

Base class for 1st and 2nd stages of Neumann and Matas scene text detection algorithm [169]. : More...

#include <opencv2/text/erfilter.hpp>

Inheritance diagram for cv::text::ERFilter:
cv::Algorithm

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 [169]. :

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
imageSingle channel image CV_8UC1
regionsOutput 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

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