matchShapes

geometryfunctionOpenCV 5.0.0

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

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

Explore visually: Image and contour moments →

Summarize how a region’s mass is distributed over its coordinates.

VISUAL WALKTHROUGHShape

REFERENCE INPUTShape with a concavity

The inward notch distinguishes the original boundary from its convex hull.

→

RESULTCentroid and principal spread

The centroid and axes illustrate geometric descriptors. They summarize the region rather than reproducing every boundary sample.

Illustrative example. The stages explain the method; they are not a live OpenCV execution.

Compares two shapes.

The function compares two shapes. All three implemented methods use the Hu invariants (see #HuMoments)

matchShapes(contour1: Mat, contour2: Mat, method: number, parameter: number): number;

contour1

First contour or grayscale image.

contour2

Second contour or grayscale image.

method

Comparison method, see #ShapeMatchModes

parameter

Method-specific parameter (not supported now).

Returns

The number result.

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.