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opencv-wasm

phase

Core and matricesfunctionOpenCV 5.0.0
import { phase } from '@banou/opencv-wasm'

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

ARGUMENTSx, y, angle, angleInDegrees
FUNCTIONphase
RETURN TYPEvoid
Call structure. A void return can still write to destination arguments. The parameter descriptions define inputs, outputs and ownership.

Calculates the rotation angle of 2D vectors.

The function cv::phase calculates the rotation angle of each 2D vector that is formed from the corresponding elements of x and y :

\texttt{angle} (I) =  \texttt{atan2} ( \texttt{y} (I), \texttt{x} (I))

The angle estimation accuracy is about 0.3 degrees. When x(I)=y(I)=0 , the corresponding angle(I) is set to 0.

phase(x: Mat, y: Mat, angle: Mat, angleInDegrees: boolean): void;
2 available overloads
phase(x: Mat, y: Mat, angle: Mat): void;
phase(x: Mat, y: Mat, angle: Mat, angleInDegrees: boolean): void;
x

input floating-point array of x-coordinates of 2D vectors.

y

input array of y-coordinates of 2D vectors; it must have the same size and the same type as x.

angle

Output destination, filled by the native operation. output array of vector angles; it has the same size and same type as x .

angleInDegrees

when true, the function calculates the angle in degrees, otherwise, they are measured in radians.

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.