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== Quaternion to Euler angles conversion ==
A direct formula for the conversion from a quaternion to Euler angles in any of the 12 possible sequences exists<ref>{{cite journal |last1=Bernardes |first1=Evandro |last2=Viollet |first2=Stéphane |title=Quaternion to Euler angles conversion: A direct, general and computationally efficient method |journal=PLOS ONE |date=10 November 2022 |volume=17 |issue=11 |pages=e0276302 |doi=10.1371/journal.pone.0276302 |url=https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0276302 |language=en |issn=1932-6203}}</ref>. For the rest of this section, the formula for the sequence '''Body 3-2-1''' will be shown.
The Euler angles can be obtained from the quaternions via the relations:<ref>{{cite journal|last1=Blanco|first1=Jose-Luis|title=A tutorial on se (3) transformation parameterizations and on-manifold optimization|journal=University of Malaga, Tech. Rep|date=2010|citeseerx=10.1.1.468.5407}}</ref>
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