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opencv-wasm

xfeatures2d_PCTSignatures_SimilarityFunction

xfeatures2dclassOpenCV 5.0.0
import { xfeatures2d_PCTSignatures_SimilarityFunction } from '@banou/opencv-wasm'

Use after await initOpenCV(). See the initialization and named imports guide.

ARGUMENTSConstructor or factory
CLASSxfeatures2d_PCTSignatures_SimilarityFunction
RETURN TYPEOwned native handle
Call structure. A void return can still write to destination arguments. The parameter descriptions define inputs, outputs and ownership.

Native object: release it with using or delete(). Factories can return null; check before calling methods.

Similarity function selector. See: Christian Beecks, Merih Seran Uysal, Thomas Seidl. Signature quadratic form distance. In Proceedings of the ACM International Conference on Image and Video Retrieval, pages 438-445. ACM, 2010. [BeecksUS10]

Note: For selected distance function: 

 d(c_i, c_j)

and parameter: 

 \alpha

Upstream declaration ↗

Constructors and members

static MINUS

 -d(c_i, c_j) 

MINUS: xfeatures2d_PCTSignatures_SimilarityFunctionValue<0>,

Upstream declaration ↗

static GAUSSIAN

 e^{ -\alpha * d^2(c_i, c_j)} 

GAUSSIAN: xfeatures2d_PCTSignatures_SimilarityFunctionValue<1>,

Upstream declaration ↗

static HEURISTIC

 \frac{1}{\alpha + d(c_i, c_j)} 

HEURISTIC: xfeatures2d_PCTSignatures_SimilarityFunctionValue<2>

Upstream declaration ↗

These signatures describe this package. Upstream documentation can mention optional backends that are absent from this build. Check runtime compatibility before choosing a backend or file format.