tfg.rendering.camera.perspective.intrinsics_from_matrix
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Extracts intrinsic parameters from a calibration matrix.
tfg.rendering.camera.perspective.intrinsics_from_matrix(
matrix: type_alias.TensorLike,
name: str = 'perspective_intrinsics_from_matrix'
) -> Tuple[tf.Tensor, tf.Tensor, tf.Tensor]
Extracts the focal length \((f_x, f_y)\), the principal point
\((c_x, c_y)\) and the skew_coefficient(\sc\) from a camera calibration
matrix
\[
\mathbf{C} =
\begin{bmatrix}
f_x & sc & c_x \\
0 & f_y & c_y \\
0 & 0 & 1 \\
\end{bmatrix}.
\]
Note |
In the following, A1 to An are optional batch dimensions.
|
Args |
matrix
|
A tensor of shape [A1, ..., An, 3, 3] , where the last two
dimensions represent a camera calibration matrix.
|
name
|
A name for this op that defaults to
"perspective_intrinsics_from_matrix".
|
Returns |
Tuple of three tensors, the first two of shape [A1, ..., An, 2] and
the third of shape [A1, ..., An, 1] . The first tensor represents the
focal length, and the second one the principle point and the third one
represents the skew coefficient.
|
Raises |
ValueError
|
If the shape of matrix is not supported.
|
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Last updated 2022-10-28 UTC.
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