Correct rmse in dlt_reconstruct

navipy/arenatools/cam_dlt.py

@@ -54,7 +54,7 @@ units are [u,v] i.e. camera coordinates or pixels
 
             # compute ideal [u,v] for each camera
             uv = m1.dot(xyz.loc[frame_i, ['x', 'y', 'z']].transpose())
-
+            uv = uv[:, np.newaxis]  # because m2 has size n,1
             # compute the number of degrees of freedom in the reconstruction
             dof = m2.size-3
 
@@ -92,7 +92,7 @@ units are [u,v] i.e. camera coordinates or pixels
 
             # compute ideal [u,v] for each camera
             uv = m1.dot(xyz.loc[frame_i, ['x', 'y']].transpose())
-
+            uv = uv[:, np.newaxis]  # because m2 has size n,1
             # compute the number of degrees of freedom in the reconstruction
             dof = m2.size-3