Function opencv::core::perspective_transform

pub fn perspective_transform(
    src: &dyn ToInputArray, 
    dst: &mut dyn ToOutputArray, 
    m: &dyn ToInputArray
) -> Result<()>

Performs the perspective matrix transformation of vectors.

The function cv::perspectiveTransform transforms every element of src by treating it as a 2D or 3D vector, in the following way: where and

Here a 3D vector transformation is shown. In case of a 2D vector transformation, the z component is omitted.

Note: The function transforms a sparse set of 2D or 3D vectors. If you want to transform an image using perspective transformation, use warpPerspective . If you have an inverse problem, that is, you want to compute the most probable perspective transformation out of several pairs of corresponding points, you can use getPerspectiveTransform or findHomography .

Parameters

• src: input two-channel or three-channel floating-point array; each element is a 2D/3D vector to be transformed.
• dst: output array of the same size and type as src.
• m: 3x3 or 4x4 floating-point transformation matrix.

See also

transform, warpPerspective, getPerspectiveTransform, findHomography