GitHub

ratwolfzero/Quaternion_3D_Rotation

Animates three orthogonal rings (XY, YZ, XZ planes) Applies a continuously changing rotation using quaternions around the X, Y, and Z axes Demonstrates how quaternion multiplication preserves smooth ...
GitHub

Conversion between quaternions and other rotation parametrizations

This Python module provides conversion functions between quaternions and other rotation parameterizations (axis-angle, rotation matrix, Euler angles). See also the pure-python package quaternionic.
Scientific Research Publishing

K. Shoemake, “Animating Rotation with Quaternion Calculus,” ACM SIG-GRAPH, 1987, Course Notes, Computer Animation: 3–D Mo-tion, Specification, and Control.

ABSTRACT: In this paper, a series of bicomplex representation methods of quaternion division algebra is introduced. We present a new multiplication concept of quaternion matrices, a new determinant ...
Europe PMC

Interpretable Rotation-Equivariant Quaternion Neural Networks for 3D Point Cloud Processing.

This study proposes a set of generic rules to revise existing neural networks for 3D point cloud processing to rotation-equivariant quaternion neural networks (REQNNs), in order to make feature ...