matMulDeriv

geometryfunctionOpenCV 5.0.0

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

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

ARGUMENTSA, B, dABdA, dABdB

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FUNCTIONmatMulDeriv

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RETURN TYPEvoid

Call structure. A void return can still write to destination arguments. The parameter descriptions define inputs, outputs and ownership.

Computes partial derivatives of the matrix product for each multiplied matrix.

matMulDeriv(A: Mat, B: Mat, dABdA: Mat, dABdB: Mat): void;

A

First multiplied matrix.

B

Second multiplied matrix.

dABdA

Output destination, filled by the native operation. First output derivative matrix d(A*B)/dA of size \texttt{A.rows*B.cols} \times {A.rows*A.cols} .

dABdB

Output destination, filled by the native operation. Second output derivative matrix d(A*B)/dB of size \texttt{A.rows*B.cols} \times {B.rows*B.cols} .

The function computes partial derivatives of the elements of the matrix product A*B with regard to the elements of each of the two input matrices. The function is used to compute the Jacobian matrices in #stereoCalibrate but can also be used in any other similar optimization function.

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.