This package includes several models for probability distributions of orientational data. Orientational data here refers to any type of data that defines the orientation of a rigid body with respect ...

The objective of this code is to calculate the gradient of the correlation of a projection of a structural model (e.g. from MD) with a set of 2D cryo-EM raw images (experimental images). We assume ...

Abstract: Accurate estimation of rotation angles in polarimetric imaging is critical for high-precision polarimetric measurements. While existing least-squares-based methods avoid complex instrument ...

For any matrix in the rotation group SO₃, we give the explicit expression for its axis and angle of rotation without computing eigenvectors. The formulas depend only on the entries of the matrix, ...