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opencv-wasm

GOperation

Core and matricesclassOpenCV 5.0.0
import { GOperation } from '@banou/opencv-wasm'

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

ARGUMENTSConstructor or factory
CLASSGOperation
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.

A native custom operation with matrix inputs and outputs. Its metadata callback determines the preallocated output layouts.

Constructors and members

static new

Create an owned GOperation object. Release native handles with using or delete().

new(id: EmbindString, inputs: number, outputs: number, outMeta: GraphMetadataFunction): GOperation;
id

id argument (EmbindString).

inputs

inputs argument (number).

outputs

outputs argument (number).

outMeta

out meta argument (GraphMetadataFunction).

Returns

The GOperation result. Release returned native handles with using or delete(), including handles nested in results.

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.

on

Connect matrix graph nodes to this operation and return its output nodes. Dispose each returned node handle.

on(inputs: readonly GMat[]): GMat[];
inputs

inputs argument (readonly GMat[]).

Returns

The GMat[] result. Release returned native handles with using or delete(), including handles nested in results.

kernel

Create a CPU kernel package from a synchronous callback. Input and output matrices are borrowed until the callback returns; fill the allocated outputs without resizing.

kernel(run: GraphKernelFunction): GKernelPackage;
run

run argument (GraphKernelFunction).

Returns

The GKernelPackage result. Release returned native handles with using or delete(), including handles nested in results.

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.