
doi: 10.2514/3.55767b
A quaternion is regarded as a four-parameter representation of a coordinate transformation matrix, where the four components of the quaternion are treated on an equal basis. This leads to a unified, compact, and singularity-free approach to determining the quaternion when the matrix is given.
Quaternion From Rotation Matrix, Basic linear algebra
Quaternion From Rotation Matrix, Basic linear algebra
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