org.bytedeco.javacpp

Class opencv_nonfree.SIFT

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.javacpp.opencv_core.Algorithm

org.bytedeco.javacpp.opencv_features2d.FeatureDetector

org.bytedeco.javacpp.opencv_features2d.Feature2D

org.bytedeco.javacpp.opencv_nonfree.SIFT

Enclosing class:

opencv_nonfree

public static class opencv_nonfree.SIFT
extends opencv_features2d.Feature2D

SIFT implementation. The class implements SIFT algorithm by D. Lowe.

Nested Class Summary

Nested classes/interfaces inherited from class org.bytedeco.javacpp.opencv_core.Algorithm

opencv_core.Algorithm.Constructor, opencv_core.Algorithm.Getter, opencv_core.Algorithm.Setter

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
SIFT()
SIFT(int size)
SIFT(int nfeatures, int nOctaveLayers, double contrastThreshold, double edgeThreshold, double sigma)
SIFT(Pointer p)

Method Summary

Modifier and Type	Method and Description
void	apply(opencv_core.Mat img, opencv_core.Mat mask, opencv_features2d.KeyPoint keypoints) finds the keypoints using SIFT algorithm
void	apply(opencv_core.Mat img, opencv_core.Mat mask, opencv_features2d.KeyPoint keypoints, opencv_core.Mat descriptors)
void	apply(opencv_core.Mat img, opencv_core.Mat mask, opencv_features2d.KeyPoint keypoints, opencv_core.Mat descriptors, boolean useProvidedKeypoints) finds the keypoints and computes descriptors for them using SIFT algorithm.
void	buildDoGPyramid(opencv_core.MatVector pyr, opencv_core.MatVector dogpyr)
void	buildGaussianPyramid(opencv_core.Mat base, opencv_core.MatVector pyr, int nOctaves)
int	descriptorSize() returns the descriptor size in floats (128)
int	descriptorType() returns the descriptor type
void	findScaleSpaceExtrema(opencv_core.MatVector gauss_pyr, opencv_core.MatVector dog_pyr, opencv_features2d.KeyPoint keypoints)
opencv_core.AlgorithmInfo	info()
opencv_nonfree.SIFT	position(int position)

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

asDescriptorExtractor, asDescriptorExtractor, compute, create, create, detectAndCompute, detectAndCompute

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

detect, detect, detect, detect, empty

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

_create, _create, getAlgorithm, getAlgorithm, getBool, getBool, getDouble, getDouble, getInt, getInt, getList, getMat, getMat, getMatVector, getMatVector, getParams, getString, getString, name, paramHelp, paramHelp, paramType, paramType, read, set, set, set, set, set, set, set, set, set, set, set, set, set, set, setAlgorithm, setAlgorithm, setBool, setBool, setDouble, setDouble, setInt, setInt, setMat, setMat, setMatVector, setMatVector, setString, setString, write

Methods inherited from class org.bytedeco.javacpp.Pointer

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

Methods inherited from class java.lang.Object

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

Constructor Detail

SIFT

public SIFT(Pointer p)

SIFT

public SIFT(int size)

SIFT

public SIFT(int nfeatures,
            int nOctaveLayers,
            double contrastThreshold,
            double edgeThreshold,
            double sigma)

SIFT

public SIFT()

Method Detail

position

public opencv_nonfree.SIFT position(int position)

Overrides:

position in class opencv_core.Algorithm

descriptorSize

public int descriptorSize()

returns the descriptor size in floats (128)

descriptorType

public int descriptorType()

returns the descriptor type

apply

public void apply(opencv_core.Mat img,
                  opencv_core.Mat mask,
                  opencv_features2d.KeyPoint keypoints)

finds the keypoints using SIFT algorithm

apply

public void apply(opencv_core.Mat img,
                  opencv_core.Mat mask,
                  opencv_features2d.KeyPoint keypoints,
                  opencv_core.Mat descriptors,
                  boolean useProvidedKeypoints)

finds the keypoints and computes descriptors for them using SIFT algorithm. Optionally it can compute descriptors for the user-provided keypoints

apply

public void apply(opencv_core.Mat img,
                  opencv_core.Mat mask,
                  opencv_features2d.KeyPoint keypoints,
                  opencv_core.Mat descriptors)

info

public opencv_core.AlgorithmInfo info()

Overrides:

info in class opencv_core.Algorithm

buildGaussianPyramid

public void buildGaussianPyramid(opencv_core.Mat base,
                                 opencv_core.MatVector pyr,
                                 int nOctaves)

buildDoGPyramid

public void buildDoGPyramid(opencv_core.MatVector pyr,
                            opencv_core.MatVector dogpyr)

findScaleSpaceExtrema

public void findScaleSpaceExtrema(opencv_core.MatVector gauss_pyr,
                                  opencv_core.MatVector dog_pyr,
                                  opencv_features2d.KeyPoint keypoints)