Computes the 3d ray for a 2d point (the z component of the ray is 1).
tfg.rendering.camera.orthographic.ray(
point_2d: type_alias.TensorLike, name: str = 'orthographic_ray'
) -> tf.Tensor
Computes the 3d ray \((r_x, r_y, 1)\) for a 2d point \((x', y')\) on the
image plane. For an orthographic camera the rays are constant over the image
plane with
\[
\begin{matrix}
r_x = 0, & r_y = 0, & z = 1.
\end{matrix}
\]
Note: In the following, A1 to An are optional batch dimensions.
Args
point_2d
A tensor of shape [A1, ..., An, 2]
, where the last dimension
represents a 2d point.
name
A name for this op that defaults to "orthographic_ray".
Returns
A tensor of shape [A1, ..., An, 3]
, where the last dimension represents
a 3d ray.
Raises
ValueError
If the shape of point_2d
is not supported.