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Application du Groupe Li dans gtsam
2022-07-06 06:01:00 【Zhanjiang】
1. AdjointMapDéfinition


Pourquoi dans la matrice Li Qun,Les deux définitions ci - dessus peuvent être mélangées?La preuve est la suivante:

2. Li Qun AdjointMap


Comment la formule ci - dessus tire - t - elle les conclusions suivantes
AdjointMap Est la cartographie de la Matrice antisymétrique à la Matrice antisymétrique
Ordre

Alors la formule ci - dessus peut être écrite comme suit
![\begin{bmatrix} [\omega']_{\times} & v' \\ 0 & 0 \end{bmatrix} = \begin{bmatrix} [R\omega]_{\times} & t \times R\omega + Rv \\ 0 & 0 \end{bmatrix} \Rightarrow \begin{cases} \omega' = R \omega \\ v' = t \times R\omega + Rv \end{cases}](http://img.inotgo.com/imagesLocal/202207/06/202207060557471698_2.gif)
Et j'ai poussé la formule suivante
3. Local Coordinates

Il y a une telle formule

La preuve est la suivante:

4. ImuFactor

![]()
![\frac{\partial R_k}{\partial \theta_k} = H(\theta_k) = \sum_{k=0}^{\infty} \frac{(-1)^k}{(k+1)!}[\theta]_{\times}^k](http://img.inotgo.com/imagesLocal/202207/06/202207060557471698_9.gif)
Preuve
Par
Oui.
![\frac{\partial R_k}{\partial \theta_k} \\ = \lim_{\delta \rightarrow0} \frac{ exp([\theta + \delta]_{\times}) \ominus exp([\theta]_{\times}) }{\delta} \\ = \lim_{\delta \rightarrow0} \frac{Log \left( exp([-\theta]_{\times}) exp([\theta + \delta]_{\times}) \right) }{\delta} \\ = \lim_{\delta \rightarrow0} \frac{Log \left( exp([-\theta]_{\times}) exp([\theta]_{\times}) exp([H(\theta)\delta]_{\times}) \right) }{\delta} \\ = \lim_{\delta \rightarrow0} \frac{Log \left( exp([H(\theta)\delta]_{\times}) \right) }{\delta} \\ = H(\theta)](http://img.inotgo.com/imagesLocal/202207/06/202207060557471698_7.gif)
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