ShapeTransformer

shapeclassOpenCV 5.0.0

import { ShapeTransformer } from '@banou/opencv-wasm'

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

ARGUMENTSConstructor or factory

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CLASSShapeTransformer

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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 shape transformation algorithms.

Upstream declaration ↗

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.

estimateTransformation

Estimate the transformation parameters of the current transformer algorithm, based on point matches.

estimateTransformation(transformingShape: Mat, targetShape: Mat, matches: DMatchVector): void;

transformingShape

Contour defining first shape.

targetShape

Contour defining second shape (Target).

matches

Standard vector of Matches between points.

Upstream declaration ↗

applyTransformation

Apply a transformation, given a pre-estimated transformation parameters.

applyTransformation(input: Mat, output: Mat): number;

2 available overloads

applyTransformation(input: Mat): number;

applyTransformation(input: Mat, output: Mat): number;

input

Contour (set of points) to apply the transformation.

output

Output destination, filled by the native operation. Output contour.

Returns

The number result.

Upstream declaration ↗

warpImage

Apply a transformation, given a pre-estimated transformation parameters, to an Image.

warpImage(transformingImage: Mat, output: Mat, flags: number, borderMode: number, borderValue: Scalar): void;

4 available overloads

warpImage(transformingImage: Mat, output: Mat): void;

warpImage(transformingImage: Mat, output: Mat, flags: number): void;

warpImage(transformingImage: Mat, output: Mat, flags: number, borderMode: number): void;

warpImage(transformingImage: Mat, output: Mat, flags: number, borderMode: number, borderValue: Scalar): void;

transformingImage

Input image.

output

Output destination, filled by the native operation. Output image.

flags

Image interpolation method.

borderMode

border style.

borderValue

border value.

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.