org.bytedeco.javacpp

Class opencv_features2d.MSER

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.javacpp.opencv_core.Algorithm

org.bytedeco.javacpp.opencv_features2d.Feature2D

org.bytedeco.javacpp.opencv_features2d.MSER

All Implemented Interfaces:

AutoCloseable

Enclosing class:

opencv_features2d

@Namespace(value="cv")
public static class opencv_features2d.MSER
extends opencv_features2d.Feature2D

\brief Maximally stable extremal region extractor

The class encapsulates all the parameters of the %MSER extraction algorithm (see [wiki article](http://en.wikipedia.org/wiki/Maximally_stable_extremal_regions)).

- there are two different implementation of %MSER: one for grey image, one for color image

- the grey image algorithm is taken from: \cite nister2008linear ; the paper claims to be faster than union-find method; it actually get 1.5~2m/s on my centrino L7200 1.2GHz laptop.

- the color image algorithm is taken from: \cite forssen2007maximally ; it should be much slower than grey image method ( 3~4 times ); the chi_table.h file is taken directly from paper's source code which is distributed under GPL.

- (Python) A complete example showing the use of the %MSER detector can be found at samples/python/mser.py

Nested Class Summary

Nested classes/interfaces inherited from class org.bytedeco.javacpp.Pointer

Pointer.CustomDeallocator, Pointer.Deallocator, Pointer.NativeDeallocator

Field Summary

Fields inherited from class org.bytedeco.javacpp.Pointer

address, capacity, limit, position

Constructor Summary

Constructors

Constructor and Description
opencv_features2d.MSER(Pointer p) Pointer cast constructor.

Method Summary

Methods

Modifier and Type	Method and Description
static opencv_features2d.MSER	create()
static opencv_features2d.MSER	create(int _delta, int _min_area, int _max_area, double _max_variation, double _min_diversity, int _max_evolution, double _area_threshold, double _min_margin, int _edge_blur_size) \brief Full consturctor for %MSER detector
void	detectRegions(opencv_core.Mat image, opencv_core.PointVectorVector msers, opencv_core.RectVector bboxes) \brief Detect %MSER regions
int	getDelta()
int	getMaxArea()
int	getMinArea()
boolean	getPass2Only()
void	setDelta(int delta)
void	setMaxArea(int maxArea)
void	setMinArea(int minArea)
void	setPass2Only(boolean f)

Methods inherited from class org.bytedeco.javacpp.opencv_features2d.Feature2D

compute, compute, defaultNorm, descriptorSize, descriptorType, detect, detect, detect, detect, detectAndCompute, detectAndCompute, empty, position

Methods inherited from class org.bytedeco.javacpp.opencv_core.Algorithm

clear, getDefaultName, read, save, save, write

Methods inherited from class org.bytedeco.javacpp.Pointer

address, asBuffer, asByteBuffer, capacity, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, hashCode, isNull, limit, limit, maxBytes, memchr, memcmp, memcpy, memmove, memset, offsetof, position, put, setNull, sizeof, toString, totalBytes, withDeallocator, zero

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

opencv_features2d.MSER

public opencv_features2d.MSER(Pointer p)

Pointer cast constructor. Invokes Pointer.Pointer(Pointer).

Method Detail

create

@opencv_core.Ptr
public static opencv_features2d.MSER create(int _delta,
                                            int _min_area,
                                            int _max_area,
                                            double _max_variation,
                                            double _min_diversity,
                                            int _max_evolution,
                                            double _area_threshold,
                                            double _min_margin,
                                            int _edge_blur_size)

\brief Full consturctor for %MSER detector

Parameters:

_delta - it compares \f$(size_{i}-size_{i-delta})/size_{i-delta}\f$

_min_area - prune the area which smaller than minArea

_max_area - prune the area which bigger than maxArea

_max_variation - prune the area have simliar size to its children

_min_diversity - for color image, trace back to cut off mser with diversity less than min_diversity

_max_evolution - for color image, the evolution steps

_area_threshold - for color image, the area threshold to cause re-initialize

_min_margin - for color image, ignore too small margin

_edge_blur_size - for color image, the aperture size for edge blur

create

@opencv_core.Ptr
public static opencv_features2d.MSER create()

detectRegions

public void detectRegions(@ByVal
                 opencv_core.Mat image,
                 @ByRef
                 opencv_core.PointVectorVector msers,
                 @ByRef
                 opencv_core.RectVector bboxes)

\brief Detect %MSER regions

Parameters:

image - input image (8UC1, 8UC3 or 8UC4)

msers - resulting list of point sets

bboxes - resulting bounding boxes

setDelta

public void setDelta(int delta)

getDelta

public int getDelta()

setMinArea

public void setMinArea(int minArea)

getMinArea

public int getMinArea()

setMaxArea

public void setMaxArea(int maxArea)

getMaxArea

public int getMaxArea()

setPass2Only

public void setPass2Only(@Cast(value="bool")
                boolean f)

getPass2Only

@Cast(value="bool")
public boolean getPass2Only()