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HistogramCostExtractor

shapeclassOpenCV 5.0.0
import { HistogramCostExtractor } from '@banou/opencv-wasm'

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

ARGUMENTSConstructor or factory
CLASSHistogramCostExtractor
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. Inherits Algorithm.

Abstract base class for histogram cost algorithms.

Constructors and members

clone

Create another handle to the same native object. This retains the object without copying its pixels or algorithm state; dispose both handles separately.

clone(): this;
Returns

The this result.

buildCostMatrix

Compute pairwise histogram matching costs from the two descriptor sets and fill the supplied cost matrix.

buildCostMatrix(descriptors1: Mat, descriptors2: Mat, costMatrix: Mat): void;
descriptors1

descriptors1 argument (Mat).

descriptors2

descriptors2 argument (Mat).

costMatrix

Output destination, filled by the native operation. cost matrix argument (Mat).

setNDummies

Set the ndummies used by this HistogramCostExtractor object.

setNDummies(nDummies: number): void;
nDummies

n dummies argument (number).

getNDummies

Return the ndummies configured on this HistogramCostExtractor object.

getNDummies(): number;
Returns

The number result.

setDefaultCost

Set the default cost used by this HistogramCostExtractor object.

setDefaultCost(defaultCost: number): void;
defaultCost

default cost argument (number).

getDefaultCost

Return the default cost configured on this HistogramCostExtractor object.

getDefaultCost(): number;
Returns

The number result.

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.