Calculates the rotation angle of 2D vectors

ang = cv.phase(x, y)
ang = cv.phase(..., 'OptionName',optionValue, ...)

Input

• x floating-point array of x-coordinates of 2D vectors.
• y floating-point array of y-coordinates of 2D vectors. It must have the same size and type as x.

Output

• ang output array of vector angles; it has the same size and type as x.

Options

• Degrees when true, the function calculates the angle in degrees, otherwise, they are measured in radians. default false

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

angle(I) = atan2(y(I), 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.