alueError: shapes (3,3) and (1,1) not aligned: 3 (dim 1) != 1 (dim 0)

[archenroot]

Hi, just tried out python3 cube_reconstruction.py and got:

True essential matrix: [[matrix([[0.]]) matrix([[-1.]]) matrix([[0.]])]
 [matrix([[-0.361547]]) matrix([[0.]]) matrix([[-3.14154162]])]
 [matrix([[0.]]) matrix([[3.]]) matrix([[0.]])]]
Computed essential matrix: [[-4.85388477e-05 -1.00000000e+00 -4.21762070e-04]
 [-3.62391216e-01 -3.38325541e-02 -3.14887717e+00]
 [ 1.45616543e-04  3.00000000e+00  1.26528621e-03]]
True fundamental matrix: [[matrix([[0.]]) matrix([[-1.11111111e-05]]) matrix([[0.00166667]])]
 [matrix([[-4.01718887e-06]]) matrix([[0.]]) matrix([[-0.00986923]])]
 [matrix([[0.00060258]]) matrix([[0.01166667]]) matrix([[-0.26961594]])]]
Traceback (most recent call last):
  File "cube_reconstruction.py", line 119, in <module>
    print('Computed fundamental matrix:', (F * true_F[2][2]))
  File "/home/zangetsu/proj/prometheus-core/demo/demo-20-3dreconstruction-flame/3Dreconstruction/venv3/lib/python3.6/site-packages/numpy/matrixlib/defmatrix.py", line 226, in __rmul__
    return N.dot(other, self)
ValueError: shapes (3,3) and (1,1) not aligned: 3 (dim 1) != 1 (dim 0)

[archenroot]

Q: What version of opencv do you exactly use?

[Hemantr05]

I got the same error!
How do I resolve it?
I use the OpenCV4

[Aaronreb]

I am getting the same error.
Has anyone solved it?
Any help would be appreciated.
Thanks

[littlesquirrel2017]

Hi, just tried out python3 cube_reconstruction.py and got:

True essential matrix: [[matrix([[0.]]) matrix([[-1.]]) matrix([[0.]])]
 [matrix([[-0.361547]]) matrix([[0.]]) matrix([[-3.14154162]])]
 [matrix([[0.]]) matrix([[3.]]) matrix([[0.]])]]
Computed essential matrix: [[-4.85388477e-05 -1.00000000e+00 -4.21762070e-04]
 [-3.62391216e-01 -3.38325541e-02 -3.14887717e+00]
 [ 1.45616543e-04  3.00000000e+00  1.26528621e-03]]
True fundamental matrix: [[matrix([[0.]]) matrix([[-1.11111111e-05]]) matrix([[0.00166667]])]
 [matrix([[-4.01718887e-06]]) matrix([[0.]]) matrix([[-0.00986923]])]
 [matrix([[0.00060258]]) matrix([[0.01166667]]) matrix([[-0.26961594]])]]
Traceback (most recent call last):
  File "cube_reconstruction.py", line 119, in <module>
    print('Computed fundamental matrix:', (F * true_F[2][2]))
  File "/home/zangetsu/proj/prometheus-core/demo/demo-20-3dreconstruction-flame/3Dreconstruction/venv3/lib/python3.6/site-packages/numpy/matrixlib/defmatrix.py", line 226, in __rmul__
    return N.dot(other, self)
ValueError: shapes (3,3) and (1,1) not aligned: 3 (dim 1) != 1 (dim 0)

np.multiply(F , true_F[2][2])

[Agui-Noodles]

I got the same error，Has anyone solved it?
Thanks！

[dewirahmawati]

Hi, just tried out python3 cube_reconstruction.py and got:

True essential matrix: [[matrix([[0.]]) matrix([[-1.]]) matrix([[0.]])]
 [matrix([[-0.361547]]) matrix([[0.]]) matrix([[-3.14154162]])]
 [matrix([[0.]]) matrix([[3.]]) matrix([[0.]])]]
Computed essential matrix: [[-4.85388477e-05 -1.00000000e+00 -4.21762070e-04]
 [-3.62391216e-01 -3.38325541e-02 -3.14887717e+00]
 [ 1.45616543e-04  3.00000000e+00  1.26528621e-03]]
True fundamental matrix: [[matrix([[0.]]) matrix([[-1.11111111e-05]]) matrix([[0.00166667]])]
 [matrix([[-4.01718887e-06]]) matrix([[0.]]) matrix([[-0.00986923]])]
 [matrix([[0.00060258]]) matrix([[0.01166667]]) matrix([[-0.26961594]])]]
Traceback (most recent call last):
  File "cube_reconstruction.py", line 119, in <module>
    print('Computed fundamental matrix:', (F * true_F[2][2]))
  File "/home/zangetsu/proj/prometheus-core/demo/demo-20-3dreconstruction-flame/3Dreconstruction/venv3/lib/python3.6/site-packages/numpy/matrixlib/defmatrix.py", line 226, in __rmul__
    return N.dot(other, self)
ValueError: shapes (3,3) and (1,1) not aligned: 3 (dim 1) != 1 (dim 0)

np.multiply(F , true_F[2][2])

that's worked for me and the next guys, if you get error again. 'It is not currently possible to manually set the aspect '
NotImplementedError: It is not currently possible to manually set the aspect on 3D axes...

you can change line 26 cube_reconstruction.py to ax.set_aspect('auto').

worked.

[XBXiaoBei]

I change true_F[2][2] to true_F[2][2].item(),.
worked