Function opencv::calib3d::init_camera_matrix_2d

pub fn init_camera_matrix_2d(
    object_points: &dyn ToInputArray, 
    image_points: &dyn ToInputArray, 
    image_size: Size, 
    aspect_ratio: f64
) -> Result<Mat>

Finds an initial camera matrix from 3D-2D point correspondences.

Parameters

• objectPoints: Vector of vectors of the calibration pattern points in the calibration pattern coordinate space. In the old interface all the per-view vectors are concatenated. See calibrateCamera for details.
• imagePoints: Vector of vectors of the projections of the calibration pattern points. In the old interface all the per-view vectors are concatenated.
• imageSize: Image size in pixels used to initialize the principal point.
• aspectRatio: If it is zero or negative, both and are estimated independently. Otherwise, .

The function estimates and returns an initial camera matrix for the camera calibration process. Currently, the function only supports planar calibration patterns, which are patterns where each object point has z-coordinate =0.

C++ default parameters

• aspect_ratio: 1.0