Class cv::xfeatures2d::PCTSignaturesSQFD#

Class implementing Signature Quadratic Form Distance (SQFD). View details

#include <opencv2/xfeatures2d.hpp>

Collaboration diagram for cv::xfeatures2d::PCTSignaturesSQFD:

Public Member Functions#

Public Member Functions inherited from cv::Algorithm

Return	Name	Description
	`Algorithm()`
	`~Algorithm()`
`void`	`clear()`	Clears the algorithm state.
`bool`	`empty()`	Returns true if the Algorithm is empty (e.g. in the very beginning or after unsuccessful read.
`String`	`getDefaultName()`
`void`	`read(const FileNode & fn)`	Reads algorithm parameters from a file storage.
`void`	`save(const String & filename)`
`void`	`write(` `const Ptr< FileStorage > & fs,` `const String & name = String() )`
`void`	`write(FileStorage & fs)`	Stores algorithm parameters in a file storage.
`void`	`write(` `FileStorage & fs,` `const String & name )`

Static Public Member Functions#

Static Public Member Functions inherited from cv::Algorithm

Return	Name	Description
`static Ptr< _Tp >`	`load(` `const String & filename,` `const String & objname = String() )`	Loads algorithm from the file.
`static Ptr< _Tp >`	`loadFromString(` `const String & strModel,` `const String & objname = String() )`	Loads algorithm from a String.
`static Ptr< _Tp >`	`read(const FileNode & fn)`	Reads algorithm from the file node.

Additional Inherited Members#

Detailed Description#

Class implementing Signature Quadratic Form Distance (SQFD).

Member Function Documentation#

create()#

static Ptr< PCTSignaturesSQFD > cv::xfeatures2d::PCTSignaturesSQFD::create(
const int distanceFunction = 3,
const int similarityFunction = 2,
const float similarityParameter = 1.0f )

Creates the algorithm instance using selected distance function, similarity function and similarity function parameter.

Parameters

distanceFunction — Distance function selector. Default: L2 Available: L0_25, L0_5, L1, L2, L2SQUARED, L5, L_INFINITY
similarityFunction — Similarity function selector. Default: HEURISTIC Available: MINUS, GAUSSIAN, HEURISTIC
similarityParameter — Parameter of the similarity function.

computeQuadraticFormDistance()#

float cv::xfeatures2d::PCTSignaturesSQFD::computeQuadraticFormDistance(
InputArray _signature0,
InputArray _signature1 )

Computes Signature Quadratic Form Distance of two signatures.

Parameters

_signature0 — The first signature.
_signature1 — The second signature.

computeQuadraticFormDistances()#

void cv::xfeatures2d::PCTSignaturesSQFD::computeQuadraticFormDistances(
const Mat & sourceSignature,
const std::vector< Mat > & imageSignatures,
std::vector< float > & distances )

Computes Signature Quadratic Form Distance between the reference signature and each of the other image signatures.

Parameters

sourceSignature — The signature to measure distance of other signatures from.
imageSignatures — Vector of signatures to measure distance from the source signature.
distances — Output vector of measured distances.

Source file#

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

opencv2/xfeatures2d.hpp