org.bytedeco.opencv.opencv_features2d

Class BFMatcher

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.opencv.opencv_core.Algorithm

org.bytedeco.opencv.opencv_features2d.DescriptorMatcher

org.bytedeco.opencv.opencv_features2d.BFMatcher

All Implemented Interfaces:

AutoCloseable

@Namespace(value="cv")
 @NoOffset
 @Properties(inherit=opencv_features2d.class)
public class BFMatcher
extends DescriptorMatcher

\brief Brute-force descriptor matcher.

For each descriptor in the first set, this matcher finds the closest descriptor in the second set by trying each one. This descriptor matcher supports masking permissible matches of descriptor sets.

Nested Class Summary

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

Pointer.CustomDeallocator, Pointer.Deallocator, Pointer.NativeDeallocator, Pointer.ReferenceCounter

Field Summary

Fields inherited from class org.bytedeco.opencv.opencv_features2d.DescriptorMatcher

BRUTEFORCE, BRUTEFORCE_HAMMING, BRUTEFORCE_HAMMINGLUT, BRUTEFORCE_L1, BRUTEFORCE_SL2, FLANNBASED

Fields inherited from class org.bytedeco.javacpp.Pointer

address, capacity, limit, position

Constructor Summary

Constructors

Constructor and Description
BFMatcher()
BFMatcher(int normType, boolean crossCheck) \brief Brute-force matcher constructor (obsolete).
BFMatcher(long size) Native array allocator.
BFMatcher(Pointer p) Pointer cast constructor.

Method Summary

Modifier and Type	Method and Description
DescriptorMatcher	clone()
DescriptorMatcher	clone(boolean emptyTrainData) \brief Clones the matcher.
static BFMatcher	create()
static BFMatcher	create(int normType, boolean crossCheck) \brief Brute-force matcher create method.
boolean	isMaskSupported() \brief Returns true if the descriptor matcher supports masking permissible matches.
BFMatcher	position(long position)

Methods inherited from class org.bytedeco.opencv.opencv_features2d.DescriptorMatcher

add, add, add, clear, create, create, create, empty, getTrainDescriptors, knnMatch, knnMatch, knnMatch, knnMatch, knnMatch, knnMatch, knnMatch, knnMatch, knnMatch, knnMatch, knnMatch, knnMatch, knnMatch, knnMatch, knnMatch, knnMatch, knnMatch, knnMatch, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, match, radiusMatch, radiusMatch, radiusMatch, radiusMatch, radiusMatch, radiusMatch, radiusMatch, radiusMatch, radiusMatch, radiusMatch, radiusMatch, radiusMatch, radiusMatch, radiusMatch, radiusMatch, radiusMatch, radiusMatch, radiusMatch, read, read, read, train, write, write, write, write, write

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

getDefaultName, save, save

Methods inherited from class org.bytedeco.javacpp.Pointer

address, asBuffer, asByteBuffer, availablePhysicalBytes, calloc, capacity, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, formatBytes, free, hashCode, isNull, isNull, limit, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetof, parseBytes, physicalBytes, position, put, realloc, referenceCount, releaseReference, retainReference, setNull, sizeof, toString, totalBytes, totalPhysicalBytes, withDeallocator, zero

Methods inherited from class java.lang.Object

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

Constructor Detail

BFMatcher

public BFMatcher(Pointer p)

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

BFMatcher

public BFMatcher(long size)

Native array allocator. Access with Pointer.position(long).

BFMatcher

public BFMatcher(int normType,
                 @Cast(value="bool")
                 boolean crossCheck)

\brief Brute-force matcher constructor (obsolete). Please use BFMatcher.create()

BFMatcher

public BFMatcher()

Method Detail

position

public BFMatcher position(long position)

Overrides:

position in class Algorithm

isMaskSupported

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

Description copied from class: DescriptorMatcher

\brief Returns true if the descriptor matcher supports masking permissible matches.

Overrides:

isMaskSupported in class DescriptorMatcher

create

@opencv_core.Ptr
public static BFMatcher create(int normType,
                                                @Cast(value="bool")
                                                boolean crossCheck)

\brief Brute-force matcher create method.

Parameters:

normType - One of NORM_L1, NORM_L2, NORM_HAMMING, NORM_HAMMING2. L1 and L2 norms are preferable choices for SIFT and SURF descriptors, NORM_HAMMING should be used with ORB, BRISK and BRIEF, NORM_HAMMING2 should be used with ORB when WTA_K==3 or 4 (see ORB::ORB constructor description).

crossCheck - If it is false, this is will be default BFMatcher behaviour when it finds the k nearest neighbors for each query descriptor. If crossCheck==true, then the knnMatch() method with k=1 will only return pairs (i,j) such that for i-th query descriptor the j-th descriptor in the matcher's collection is the nearest and vice versa, i.e. the BFMatcher will only return consistent pairs. Such technique usually produces best results with minimal number of outliers when there are enough matches. This is alternative to the ratio test, used by D. Lowe in SIFT paper.

create

@opencv_core.Ptr
public static BFMatcher create()

clone

@opencv_core.Ptr
public DescriptorMatcher clone(@Cast(value="bool")
                                                boolean emptyTrainData)

Description copied from class: DescriptorMatcher

\brief Clones the matcher.

Overrides:

clone in class DescriptorMatcher

Parameters:

emptyTrainData - If emptyTrainData is false, the method creates a deep copy of the object, that is, copies both parameters and train data. If emptyTrainData is true, the method creates an object copy with the current parameters but with empty train data.

clone

@opencv_core.Ptr
public DescriptorMatcher clone()

Overrides:

clone in class DescriptorMatcher