use ;
use Point2;
/// Allows the retrieval of the point on the image the feature came from.
/// A point on an image frame. This type should be used when
/// the point location is on the image frame in pixel coordinates.
/// This means the keypoint is neither undistorted nor normalized.
///
/// For calibrated coordinates, use a type that implements [`Bearing`](crate::Bearing).
/// This can be a type from a camera model crate (like `cv-pinhole`), or
/// it can be the `Unit<Vector3<f64>>` type, which implements bearing.
;